How To Test Coolant Temp Sensor

How to test the coolant temp sensor. If the temperature guage sensor goes, it obviously won't affect the coolent temp readings that go to the ECU. It could very well be a faulty sensor–the coolant temperature sensor on these cars tend to fail frequently, and they fail in a way that can make an engine get way more fuel than it can use. That image (Jeep Wrangler - How To Test A Coolant Temperature Sensor. If the check passes system specifications a coolant pump diagnosis via ME actuations can be performed where it checks for proper coolant pump actuator arm operation. In May I had a massive coolant leak, lurked you fine people and was tipped to the water outlet. Could the coolant temp sensor - Toyota 4Runner Forum - Largest 4Runner Forum. Response to Nod's post: You can more easily and thoroughly test a Coolant Temperature Sensor (CTS) by removing it, suspend it with the base rod part of the sensor (brass usually) immersed in a saucepan of water, heating the water on a stove and taking temperature readings and at the same time taking ohm readings with your multimeter. You may have to register before you can post: click the register link above to proceed. This is a discussion on Coolant Temperature Sensor Problems within the General Help forums, part of the LSx Technical Help Section category; Started having an issue a while ago, coolant temp sensor crapped out on me so i replaced it with a. The perfect example is when this part sets a code P0128 in memory. If you've ever had a check engine light or check oil light stick around, even after you've completed any maintenance, then you might have a problem with a sensor. Coolant Temperature Sensor (TS10198) by Delphi®. com FREE DELIVERY possible on eligible purchases Amazon. Don't just buy a new one, they aren't hard to check, save it for beer money. One part of your Nissan Altima is the Coolant Temperature Sensor. 4? - Answered by a verified Ford Mechanic We use cookies to give you the best possible experience on our website. The PCM uses this input for engine controls and enabling criteria for diagnostics. All you need is a digital multimeter. Sure enough, it was cracked and replacing it sorted out my leak. Location coolant temperature sensor on the engine V8 (the second is located to the right of the sensor transmits the information to the processor). How do I change the sensor on the Coolant Heat. Use a thermometer to measure the water temp as it climbs. its the cylinder head temp sensor that is used, its located in the valley of the engine toward the front. Before you get all wrapped around the axle looking for other causes, have your mechanic perform a chemical test at the radiator for a leaking cylinder head gasket. 2 / 6| Page First, locate the coolant temp sensor and remove the connector by pushing the metal clips inwards and pulling off. Engine coolant temperature sensor - Simtec (GM) type The purpose of this test is to evaluate the correct operation of an Electronic Coolant Temperature (ECT) sensor responding to a change in coolant temperature during the engine warming phase. 96 volts or less than 0. The Coolant Temperature Sensor's Function. You can also take it out, put it in a pan of boiling water and then take the reading as well. It is a ka24e Can somebody confirm which sensor this is? I was messing with it and it change the way the car was idling which led me to believe this sensor is causing this. For the testing process you will need to turn the engine on. The resistance of the thermistor decreases as the coolant temperature increases. The engine coolant temperature gauge uses an Engine Coolant Temperature (ECT) Sensor that is a heat sensitive variable resistance grounding circuit to monitor the engine's coolant temperature. Dodge Ram 1994-2001: How to Replace Engine Coolant Temperature Sensor If you are having issues with your temp gauge or throwing coolant temp sensor codes, this article is for you. Do this before running the engine, it must be cold for this test. I put more coolant in the over flow tank and the overall temp has evened out but now I get a definate coolant smell in the car. The increased temperature of the sensor will result in lower sensor resistance and cause a voltage output of the control module to be pulled to ground. I would not buy an aftermarket version of this part because of this. The sensor detects the temperature of this coolant and feeds this information back in the form of an electrical current to the engine control unit (ECU). A faulty coolant temperature sensor may cause an engine to run hot and increase fuel consumption. Your engine produces a huge amount of energy by burning fuel. This is an issue, especially when you're trying to make sure your car doesn't get overheated. How to control a coolant temperature sensor without removal. To discover all images in 1991 Jeep Wrangler O2 Sensor Location images gallery make sure you follow this kind of web page link. 2) Position the water temperature sending unit in such a way that the metal shaft (opposite end from the electrical connectors) is situated in a pot of water. How to replace a coolant temperature sensor on a Ford 6. The coolant temperature sending unit is used to operate the temperature gauge. It is positioned at a 90 degree angle from one of the coolant lines. Extra cooling is not needed when a cold engine is first started, so the engine cooling fan does not come on until the engine reaches normal operating temperature. First one is the thermostat and second one is the temperature sensor. The sensor is a negative temperature coefficient (NTC) type which is supplied with power from the control module (signal) and is grounded in the control module. On a cold engine, grab a multimeterand connect it to the terminals on the back of the sensor where the electrical connector plugs in (see step-by-step below). This is engine coolant temp sensor, the other is engine temp sensor which is usually attached to engine block, sometimes they are connected to thermostat housing with the coolant sensor. First one is the thermostat and second one is the temperature sensor. After looking up other threads on this page my cars symptoms matched as well. Check your service manual. But this time you'll be using a cup of hot water to test or measure the operation of your sensor. If the temperature guage sensor goes, it obviously won't affect the coolent temp readings that go to the ECU. Realize that the problem could be an actual high temperature problem or it could be a problem with the temperature sensor or gauge. Coolant temp sensor is BAD. The ECT is a two wire sensor, a 5-volt reference signal is sent to the sensor and the signal return is based upon. Cluster uses the signal for gauge. The computer will send another signal to the engine temperature gauge, and alert the driver if the temperature exceeds the specified range for that vehicle. If the check passes system specifications a coolant pump diagnosis via ME actuations can be performed where it checks for proper coolant pump actuator arm operation. The coolant is designed to regulate the temperature of your car. How do you check the temp gauge to see if it is working with out it being in the cluster. The Engine Coolant Temperature Sensor ("ECT" for short) is an analog sensor which, as it's name says, measures the temperature of the coolant and feeds this data to the on-board computer. first there are countless sensors and modules and solinoids and blahblahblah, much more then any older car. In general terms if the ECT reading is cold the reading could be less than 0. Turn ignition off. I'll look into the tunerpro. The coolant is designed to regulate the temperature of your car. 0L Powerstroke diesel engine. Depending on the sensor information, the control unit adapts the injection time and firing angle to the operating conditions. The SkidSteer Forum. P1116 Meaning The Engine Coolant Temperature (ECT) Sensor is a thermistor device in which resistance changes with temperature. The temperature readings taken by the. The Coolant Temperature sensor is critical to many PCM functions such as fuel injection, ignition timing, variable valve timing, and transmission shifting. Honda Civic: Why is My Engine Coolant Temperature (ECT) Sensor Bad? This article will go over the signs and symptoms that will help you decide whether or not your ECT sensor needs to be replaced. Only 1 of the gauge temp senders is used by the factory. The following symptoms can be caused by a faulty Engine Coolant Temperature Sensor or circuit loose connections. temperature of the engine coolant. The engine coolant temperature sensor (ECT sensor) is a temperature sensor in a car's engine that essentially determines and measures the temperature of the engine. The engine coolant sensor is a high failure item which is replaced regularly at any repair garage. In this video, we're going to show you how to replace the coolant temperature sensor on this 2003 Chevy Monte Carlo with the 3. It changes resistance with the temperature. For the testing process you will need to turn the engine on. Locate the coolant temperature sensor on the driver's side of the engine block, just behind the power steering pump. I've owned the car since about 2012, and bought it from an individual dealer. They told me its a MAF sensor and a coolant temp sensor. You really need a 1” deep socket to get the rotten thing out as I'm assuming from 1 bar you have a BOSS machine. This outlines everything you need to know to install a new sensor yourself. – Youtube) preceding can be classed with: submitted by simply wiringforums from September, 6 2017. If bad would turn on the check engine light. Drain the coolant system to below the Engine Coolant Temperature (ECT) sensor. Now, compare your. The sensor in the water pump has two terminals. The signal sent to the PCM by the ECT sensor helps the PCM to determine spark advance, EGR flow rate, air/fuel ratio, and engine temperature. To test the sensor, you can remove the electrical connector and check the resistance value of the sensor and compare it to specs. The PCM monitors voltage drop to determine coolant temperature. BMW E30 Coolant Temp Sensor Replacement Jared Fenton Difficulty Level: 3 Difficulty scale: Adding air to your tires is level one Rebuilding a BMW Motor is level ten A common problem area on the early BMW E30 3 Series cars is constant idle problems. First check to see if the system is indeed too cold before doing a sensor replacement. RB25 uses a brown sensor (different resistance to RB20/26, when I ran a brown sensor with RB20 ECU it thought it was in cold start all the time). If you have two coolant sensors you must be very careful to check you are getting the right sensor as a lot of computer systems have decided that all K series coolant temp sensors are compatible which they are clearly not. Use a thermometer to measure the water temp as it climbs. If the meter detects overheating, check the coolant level, then make sure of reliability of fastening of the contacts between the meter and the electrical switch. Marketing Description - 2000: Each Coolant Temperature Sensor is a direct-fit OE replacement that ensures ease of installation. Replacing this sensor will enable your ecu to measure coolant temperature correctly in order to calculate the right amount of fuel for the engine - otherwise it will run rich constantly. Only that the coolant temp is too low for closed loop operation. 1 ohms please tell me if these are within spec. How the Temperature Sensor Works. In general terms if the ECT reading is cold the reading could be less than 0. the Z-hose). Order Coolant Temperature Sensor/Sender/Switch for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. If you wish to test function of the sensor in situ, run engine until warm (water temp approx 80-90 celcius). First thought was vacuum leak but everything seems to OK WRT to the common sources of vacuum leaks (e. This video does not constitute or replace a real specialized technical manual, and was only made for convenience. Your right! It's a cheap sensor, but an OHM meter will test it in the truck and on our trucks it's to easy to get to. Page 2 of 3: ECT Sensor Test (P0117, P0118) (GM 4. Check the ECT (Engine Coolant Temperature) sensor operation, replace if needed. Measure the resistance across the terminal pins using a digital multimeter and write this value down. Check Red/White Wire For Short To Ground - Turn ignition off. Check Red/White Wire For Short To Ground - Turn ignition off. The sensor is a temperature sensor with a negative temperature coefficient. P1116 FORD Meaning The Engine Coolant Temperature (ECT) Sensor is a thermistor device in which resistance changes with temperature. I ran outta time so i put everything back together. Replacement OE Replacement Coolant Temperature Sensor. Open the hood of your vehicle to find the coolant sensor. The engine coolant temperature sensor reads the temperature of the coolant in one or more of these passages, and relays that information to the vehicle computer. The computer will send another signal to the engine temperature gauge, and alert the driver if the temperature exceeds the specified range for that vehicle. The car has 52K miles on it. The computer needs this to control when the engine uses the oxygen sensor to adjust the fuel mixture, and when to turn on the radiator fan for 1985 and later models. This video does not constitute or replace a real specialized technical manual, and was only made for convenience. Replacing this sensor will enable your ecu to measure coolant temperature correctly in order to calculate the right amount of fuel for the engine - otherwise it will run rich constantly. replace coolant temp, sensor and check for a bad fan relay. When the coolant temperature sensor fails, the problem may cause the check engine light to be illuminated and will likely trigger a fault code. Always check the Radiator Coolant Water Temperature Sensor Switch For Honda Civic 37870pna004 Newany Radiator Coolant Water Temperature Sensor Switch For Honda Civic 37870pna004 New piece before you purchase it. You can save this picture file to your individual dev. In many vehicles, a faulty coolant temperature system will trigger a check engine light or service engine light on the. 2 / 6| Page First, locate the coolant temp sensor and remove the connector by pushing the metal clips inwards and pulling off. Step 2 - Connect Digital Volt-Ohm Meter. First one is the thermostat and second one is the temperature sensor. Check here for special coupons and promotions. The sensor detects the temperature of this coolant and feeds this information back in the form of an electrical current to the engine control unit (ECU). 1 Mercruiser: Sports & Outdoors. 6 doesn't have the coolant tempo sensor near the coolant inlet on the front of the block. I've owned the car since about 2012, and bought it from an individual dealer. Buy Engine Temperature Temp Sensor Sender coolant 3. What does that mean? This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to all 1996-newer vehicles (Honda, Toyota, Volkswagen VW, Mazda, Dodge, Ford, BW, etc. Drain the coolant system to below the Engine Coolant Temperature (ECT) sensor. You can pully the engine temp sensor and test that sensor same way as relay. Ranger & B-Series - results of coolant temps sensor test( please analyze) - tested my temp sensors pleas analyze my results gauge temp sensor= wire koeo 8. Factory replacement Mustang temperature sending units are coolant temperature sending unit is located at the front of the Mustang lower intake and indicates the engine temperature to the temperature gauge. If everything else is in order, failure in this test should be because of a faulty coolant temperature sensor. We offer a full selection of genuine Chevrolet R2500 Coolant Temperature Sensors, engineered specifically to restore factory performance. If the coolant level is correct there are at least two reasons. This is engine coolant temp sensor, the other is engine temp sensor which is usually attached to engine block, sometimes they are connected to thermostat housing with the coolant sensor. Check your service manual. A bad engine coolant temperature sensor can really screw up starting and performance. The increased temperature of the sensor will result in lower sensor resistance and cause a voltage output of the control module to be pulled to ground. Coolant Temperature Sensor (CTS) The CTS is one of the most vital sensors used by the ECM. BMW E30 Coolant Temp Sensor Replacement Jared Fenton Difficulty Level: 3 Difficulty scale: Adding air to your tires is level one Rebuilding a BMW Motor is level ten A common problem area on the early BMW E30 3 Series cars is constant idle problems. The temperature sensor is located directly to the right of your valve cover as you can see in the picture. Could it be because of the battery? Intermittent temp gauge and of course the AC stop by default when that happens. We offer a full selection of genuine Dodge Grand Caravan Coolant Temperature Sensors, engineered specifically to restore factory performance. CASE 1: The coolant temperature displayed by your scan tool rose -This tells you that the engine coolant temperature (ECT) sensor is working correctly. The Chevrolet coolant temperature sensor problem remains one of those issues that can mimic or lead you to believe other problems exist with the vehicle. Here's how: Set the car heater to cold. Second way is to measure to cold and hot resistance against specs. This sensor is for the temperature input to the PCM. The engine coolant temperature sensor (also known as the coolant temperature sending unit) is a small sensor screwed into the thermostat housing. To test the sensor, you can remove the electrical connector and check the resistance value of the sensor and compare it to specs. I've replaced the coolant temp sensor, thermostat, fuel filter, vacuum hoses, checked the fuel pump, replaced the map sensor, idle air control valve, o2 sensor, cleaned the tbi and my car still has a. Disconnect this two pin wiring harness, and you’ll want to replace both ECT as well as the coolant temp light sensor. ) is "switched", i. In terms of resistance capacity, this coolant sensor has 20,000 ohms at 248 degrees Fahrenheit. Factory replacement Mustang temperature sending units are coolant temperature sending unit is located at the front of the Mustang lower intake and indicates the engine temperature to the temperature gauge. High-quality materials withstand extreme conditions. Replacement of the water temperature sensor may be in order. Now, compare your. If the coolant level is correct there are at least two reasons. You may find these other videos useful aswell: How to Remove and Replace. Check here for special coupons and promotions. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35. Because high engine oil temperature can be lethal to many of your 7. Attach an ohmmeter across the sensor’s terminals. The electrical resistance of a thermistor decreases as the temperature increases, and the resistance increases as the temperature decreases. the fans will turn on. submitted simply by wiringforums in August, 1 2017. Another symptom of a bad or failing coolant temperature sensor is an illuminated Check Engine Light. If the Check Engine light is on and there are one or more sensor trouble codes (especially a coolant sensor code, air temperature sensor code or vehicle speed sensor code), faulty input from the sensor may be affecting the normal operation of the cooling fan. Dodge Ram 1994-2001: How to Replace Engine Coolant Temperature Sensor If you are having issues with your temp gauge or throwing coolant temp sensor codes, this article is for you. The coolant temperature sensor is installed much like a spark plug. But it is third thing that wears in these systems. First check to see if the system is indeed too cold before doing a sensor replacement. Also, if you have the 1. We offer a full selection of genuine Dodge Grand Caravan Coolant Temperature Sensors, engineered specifically to restore factory performance. I unplug my coolant temp sensor and my car runs better than with it unplugged, why? 6 Answers. Re: Coolant temp sensor? If you replace that unit that the single wire plugs into, your gauge should work fine. PCM is BAD. Check engine light is on code says to check coolant, thermostat, temp sensor. A functional coolant temperature sensor not only ensures a safer ride, but it also prevents your vehicle from using more gas than necessary. If the check passes system specifications a coolant pump diagnosis via ME actuations can be performed where it checks for proper coolant pump actuator arm operation. Do not confuse it with the thermostat. Coolant Temperature Sensor (TS10198) by Delphi®. Locate the Coolant Temperature Sensor. How the Temperature Sensor Works. Looking for a 1995 Chevrolet Corvette Coolant Temperature Sensor? Get yours at Wholesale Prices and Free Shipping over $50 only here at AutoPartsWarehouse!. How to Test a Chevrolet Coolant Temperature Sensor by Russell Wood The coolant temperature sensor on a Chevrolet engine is used by the vehicle's computer to determine how hot or cold the coolant flowing through the engine block is at any given time, so that the computer knows how to properly run the engine. One of the things that will help you solve a ECT temperature problem is knowing how it works. Further guidance An ECT sensor provides a measure of the engine’s coolant temperature to the Engine Control Module (ECM), as part of the engine load sensing apparatus. if the motors are ok. ago (it did the trick) and I believe the OPS has gone out and I am in a bind- I live in a Northern remote area in No. Test engine coolant temperature sensor How to test a coolant temperature sensor. Go to the drop down menu in the lower left corner of the Waveform Library window and select, Coolant temperature sensor. Disconnect coolant temperature sensor. I've read the description of various ailments caused by a faulty coolant temperature sensor, and I'm beginning to think that it may be responsible for PeachParts Mercedes-Benz Forum Where's the Coolant Temp Sensor and how do I test it? '86 300E - PeachParts Mercedes-Benz Forum. This means that the ability to write new posts and access various member features will go away. Then check the temp sensor. Coolant Temperature Sensor Basics. How do you test it to see if it is bad? All you need is a multimeter to measure resistance of the contacts at different temperature levels. Another sign of your coolant temperature sensor not functioning properly is if your engine is overheating frequently. From the diagnostic pdf file I read for the GS its either the thermostat or the engine coolant temp sensor. This should also cause a diag code of 21. Engine Coolant Temperature (ECT) sensor out of Self-Test range ===== 22: Injected: Back Pressure (BP) sensor out of Self-Test range ===== 23: Injected: Throttle Position sensor (TPS) out of Self-Test range ===== 24: Injected: Air Charge Temperature sensor (IAT) out of Self-Test range ===== 25: Injected. Pulled the battery and did a visual looked ok. P1116 FORD Meaning The Engine Coolant Temperature (ECT) Sensor is a thermistor device in which resistance changes with temperature. Coolant Temperature Sensor Test. Naturally the coolant temperature sensor is mounted on the engine and the intake air temperature sensor somewhere in the induction system. The readings from the (ECT) sensor are sent back to the engine control unit (ECU). This provides a reference signal to the PCM, which indicates engine coolant temperature. The ECT sensor is basically a thermistor that changes resistance with temperature. Could it be because of the battery? Intermittent temp gauge and of course the AC stop by default when that happens. One part of your Nissan Altima is the Coolant Temperature Sensor. The best part is, our Honda Civic Coolant Temperature Sensor products start from as little as $13. How the Temperature Sensor Works. Near the coolant outlet on the side of the head it has a 2 wire coolant temp sensor for the ECU, a 2 wire thermo-time switch for the cold start injector, and 2 separate single wire temp senders for water temp gauges. Engine temperature too high or too low while traveling. You may find these other videos useful aswell: How to Remove and Replace. Normal operation of the system stops when the self-test is activated. 2 / 6| Page First, locate the coolant temp sensor and remove the connector by pushing the metal clips inwards and pulling off. The engine coolant temperature (ECT) sensor is a variable resistor, that measures the temperature of the engine coolant. The best way to complete any road test is to have a planned route that will bring your engine to proper operating temperature and open the thermostat of your radiator. Near the coolant outlet on the side of the head it has a 2 wire coolant temp sensor for the ECU, a 2 wire thermo-time switch for the cold start injector, and 2 separate single wire temp senders for water temp gauges. This can possibly happen when the coolant is leaking, causing the temperature sensor to behave erratically. This particular image (Jeep Wrangler – How To Test A Coolant Temperature Sensor. But if the gauge reading climbs significantly above the rating of the water thermostat, then the cooling system is not adequate to keep the coolant at the desired temperature. But with the car cold you could whip out the sensor get a friend to stick their finger over the hole to stop coolant coming out and then just test it the normal way in a pan of water and a multimeter (you need to measure ohms so a simple voltmeter is not enough). Start the engine and let it idle. How To Repair coolant level sensors. If the temperatures are not within the specified ranges, false in-car temperature sensor DTCs will be displayed. Check for coolant leaks around the sensor threads. On most vehicles, the coolant temperature sensor (CTS) can be found somewhere near the engine thermostat, which allows it to function optimally. If the battery module starts to overheat, the Coolant Temperature Sensor relays a signal to the Battery Management System (BMS). How to control a coolant temperature sensor without removal. A functional coolant temperature sensor not only ensures a safer ride, but it also prevents your vehicle from using more gas than necessary. Not the water temp as you measure the resistance and compare it to the chart below. In this article, I'll go over the steps involved with replacing the oil pressure sensor and the coolant temperature sensor on a MINI R56 with a turbocharged N14 engine. Where is the location of the coolant temperature sensor on a 1990 cutlass. Thermometrics Coolant Temperature Sensor (CTS) monitors the temperature of the coolant that is being pumped around the battery to cool the battery module of EV/PHEVs. Testing coolant temp sensor is easy. Just adjacent to the radiator on the right side of the car is a coolant container. Here's a seemingly simple problem - I noticed that the temperature gauge of my mother's 2004 Opel Meriva 1. P00B3 Radiator Coolant Temperature Sensor Circuit Low code is set when the ECM monitors a low specific electrical value within the radiator CTS or it's circuit. Naturally the coolant temperature sensor is mounted on the engine and the intake air temperature sensor somewhere in the induction system. PCM is BAD. Disconnect the connector to the coolant sensor and hook the multimeter set on ohms to it and run. To replace your ECT with your new Acura unit, you will need part number 37870-PJ5-003 or 37870-PJ7-003 for the two pin coolant temperature sensor. The SkidSteer Forum. To test, use a high impedance volt-ohmmeter. This same test can be followed for both 2 and 3 wire coolant temp. In an effort to simplify packaging Mopar will sometimes include multiple parts in a package. Would like to solve this problem before he come home. Refill cooling system. Start and run the engine for two minutes and then shut the engine off. White smoke from exhaust, poor fuel mileage and blower fan not coming on. Use a thermometer to measure the water temp as it climbs. If you test the sensor and it's good, you know that the problem is some place in the wiring harness and you can begin the process of cleaning and/or replacing any part of the harness that is suspect. The PCM cycles this by using information from the coolant temperature sensor. Check the IAT (Intake Air Temperature) sensor operation, replace if needed. This article shows how to replace the fuel temperature sensor or injection pump cover seal on a TDI engine. A faulty coolant temperature sensor may cause an engine to run hot and increase fuel consumption. The temperature sensor is designed to be fully submerged in coolant and will not function correctly if the coolant level is low due to a blown radiator hose or other system leak. The perfect example is when this part sets a code P0128 in memory. Testing your sensor. 1 ohms please tell me if these are within spec. The instrument cluster temp sensor is the smaller single wire tap The ECU temp sensor is lowest in the thermostat housing and points slightly downwards. The resistance in the sensor changes depending on the temperature of the coolant. Also a way to vary the temperature of the sensor. 0L engine, it is normally mounted in the thermostat housing (see photo). I'm hoping it is the engine coolant temp sensor. If the car won't start the coolant temp sensor is not the cause. The engine coolant temperature sensor reads the temperature of the coolant in one or more of these passages, and relays that information to the vehicle computer. Do this before running the engine, it must be cold for this test. Loosen your coolant reservoir cap to release any built up pressure, then tighten the cap back up. This sensor is for the temperature input to the PCM. P1116 FORD Meaning The Engine Coolant Temperature (ECT) Sensor is a thermistor device in which resistance changes with temperature. The coolant temp sensor for a 1977 Camry is important to the engine running properly. As I understand it there are two signals in a forester that relate to coolant temp. The MAF sensor is easy and I have an aem CAI. P0117 ECT Sensor Circuit Low Input OBD-II Trouble Code Technical Description. The coolant temp sensor is usually located on the intake manifold or the water inlet to the engine. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35. If it’s way off, replace it. So I assumed it was the temp sensor. Featured Jeep Coolant Temperature Sensor Models. The coolant temperature sending unit is used to operate the temperature gauge. How the Temperature Sensor Works. It's hard to believe how a coolant temp sensor could affect the car to cause such troubles. sensor,just a cylender head temp. The OBDII trouble code P0128 - Coolant Temperature Below Thermostat Regulating Temperature means that the engine does not reach expected temperature after running for sufficient time, or in other words, takes too long to warm up. You need to have a scanner on it to look at what the PCM is showing as the coolant temp. I would check the coolant temperature resistance at that temperature, since it has greater relevance. coolant temp sensor I was checking to see why my a/c doesn't work, (new purchase, 1995 MM) it seems the compressor clutch isn't engaging when you push the switch, on following the schematics I noticed the coolant temp switch is included in it's path and on my switch it's contacts are gone (gutted) and the wire tie wrapped out of the way. How to test an engine coolant temperature sensor An engine coolant temperature sensor is usually a variable resistor that changes resistance and thus voltage as the coolant temperature changes. Where is the CTS sensor located? On Jeeps there are two coolant sensors. If the Check Engine light is on and there are one or more sensor trouble codes (especially a coolant sensor code, air temperature sensor code or vehicle speed sensor code), faulty input from the sensor may be affecting the normal operation of the cooling fan. The engine coolant temperature sensor measures the ever-changing engine coolant temperature. Where is the coolant temperature sensor on a chevy l98 350 camaro? I have a 1987 chevy iroc equipped with the l98 350 engine. To test the sensor, the gauge and. Advance Auto Parts has 13 different Coolant Temperature Sensor for your vehicle, ready for shipping or in-store pick up. 8L Volkswagon Passat with a 6 cylinder engine. Running hot? Your coolant sensor may be faulty. If the meter detects overheating, check the coolant level, then make sure of reliability of fastening of the contacts between the meter and the electrical switch. One of the wires (tan) to this 2 wire sensor/switch sends a signal to the gauge based on the sender resistance due to the coolant temperature. If temperature gauge indicates does not indicate cold, go to next step. The ECT sensor is basically a thermistor that changes resistance with temperature. However, the car is still shaky at idle and i started messing with this sensor that i believe is the coolant temp sensor however i cannot confirm. 8kƱ and the second was 2kƱ. 9V, cold 21 ohms, hot. You can also find this ECT under several GM part numbers as well, 213718 and 25174240. And to double-check, it was the Light Green with a Red stripe wire that you measured. The powertrain control module (PCM) provides a 5 volt reference and a ground to the sensor. b Disconnect the B30 ECM connector. It is one of five related codes, which are P00B1 , P00B2 , P00B3, P00B4 , and P00B5. How to control a coolant temperature sensor without removal. Temperature Humidity Monitor, Govee WiFi Digital Indoor Hygrometer Thermometer, Wireless Temp Humidity Sensor Smart Humidity Guage with Alerts for Home House Garage Wine Cellar and Cigar Humidor 4. The wiggle test will find out if the ECT code is due to a false connection or a problem in the wiring. On most stock Fieros, the ECM uses this sensor to calculate ignition spark advance, fuel delivery to the engine, engine idle speed. How to Test a Coolant Temperature Sensor Step 1 - Locate Coolant Temperature Sensor. 0 out of 5 stars 191. Once the coolant temperature sensor has been replaced, you need to start the engine, check for leaks, and refill the radiator fluid in most cases before you test drive the vehicle. 5L engine in our yarii. If temperature gauge indicates cold, go to step 3). You may find these other videos useful aswell: How to Remove and Replace. Exhaust Gas Temperature Sensor Engine Coolant Level Sensor Engine Coolant Temperature Sensor Cruise Control or PTO ON/OFF Switch Cruise Control or PTO ON/OFF Switch Circuit Cruise Control or PTO Set/Resume Select Switch Cruise Control or PTO Set/Resume Select Switch Circuit Diagnostic Test Mode Switch Diagnostic Test Mode Switch Circuit. This higher resistance has a direct impact on the 5 Volts passing thru' it since it blocks some of it from passing thru' to ground (-this action of blocking voltage from passing thru' is called a voltage drop).