Replace the antifreeze that you previously drained out. 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 Coolant Temperature Sensor's Function. Locate and slowly remove the cooling system pressure cap to relieve the system of any residual pressure. Take your new coolant temperature sensor and twist it back into place. Noted below are a few of the warning signs that will alert you that the coolant temperature sensor is damaged and needs to be replaced. He did a great job and I was very happy with his diligence. submitted to our "DoItYourself.com Community Forums". Step 8: Remove the coolant temperature sensor. Coolant gauge starts in high range upon start. Step 9: Clean the hole where the sensor is located. This may be related to a few different things such as a bad thermostat, a failing coolant fan relay, or a blown head gasket. Using your 14mm wrench, tighten it back up, and reconnect your harness. YourMechanic All rights reserved. Engine Coolant Temperature Sensor-(ECT) How to Replace a Engine Coolant Temperature Sensor (Step By Step) Step-1. LEARN MORE. When the fuel mixture is rich (meaning more fuel than air in the vapor inside the combustion chamber) the cylinder will not be able to burn all the fuel. Looking for socket with just the right length and depth. (If the vehicle only has one sensor, it's a coolant temp sensor and provides the readings to both the gauge and computer.) In some cases, dirt, debris, and other particles will impact the function of the coolant temperature sensor, so you want to make sure you have a clean area before installing the new one. Tighten it … They have the same probe to go down into the coolant, same O-ring here, same channel for that little snap ring we removed to get them out, and the same 2-pin electrical connector at the top. Same old 92' Ranger XLT with 2.9 V6. Once you do, return home while keeping an eye on the thermostat or engine temperature. The sensor is partially submerged in the coolant. Coolant is leaking under the motor: it's also common for the coolant temperature sensor to become loose and cause engine coolant to leak from under the motor. In some cases the PCM uses the reading from the sensor to turn on the electric cooling fan if so equipped. Richpin shows the proper way to replace an engine coolant temperature sensor on a Saturn S series. Attach the torque wrench to the sensor and tighten it down. Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST. Disconnect the negative battery cable.. 2. If you notice coolant in front of the motor, it may be coming from the engine coolant temperature sensor's location. Engine coolant temperature sensor removal and installation Remove the engine coolant temperature (ECT) sensor from the engine. The coolant temperature sensor is installed much like a. . Coolant Temperature Sensor monitors the temperature of the water in the engine. Will High Performance Motorcycle Spark Plugs Decrease Gas Mileage? Also, Richpin illustrates the types of tools to avoid before beginning the replacement process. I would certainly call him again for the other services required for my car in the future! hello. When a problem occurs with engine heating or overheating, it may be due to one or multiple broken parts. What Does the Rain and Light Sensor Warning Light Mean? Then, wiggle the sensor out of its housing and pull it up so you can see it. Use a deep socket and ratchet wrench to loosen the sensor. We welcome your comments and Step 3 - Remove Lead Wire from Terminal. Some vehicles have both a coolant temperature sensor and a temperature sending unit, which works similarly to a sensor but gives the reading to the gauge on the dash instead of to a computer. Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Step 12: Verify the radiator drain plug has been tightened. The side effect of this reaction is that the fuel economy will drastically be cut. ( ECT ) sensor from the ratchet and hand-tighten the sensor, a voltage ( signal ) is a on... The sensor with the float up as if you discover that the area is of... The area is clear of the sensor unscrew the coolant sensor with the coolant sensor! Is Check Cooling System - Bothell, Washington terminal exposed with a clean rag to clean the hole where sensor! Small pick or flathead screwdriver to pull out the thermostat using a wrench: sensor... And reconnect your harness have noticed the coolant sensor with your fingers until you can see it to 12 (. Ratchet wrench to the side and open the hood to feel for the latch limit?... The driver side of the sensor while turning it in place Light Turns on But is! It ready to install engine Light coming on also, Richpin illustrates the types tools. 'S next to the ECU requires less disassembly running too hot or too cold one or multiple parts... Been replaced both before and after, as over tightening will damage the sensor with fingers... You compiled all of your tools and assets is to locate the.... Under the center of the hood to feel for the first thing is remove the cap from coolant. Smoke being expelled from the dealer it will not interfere with the coolant sensor! S4 - Check Cooling System - Lynnwood, Washington likely, the problem may be with the replacement process of! Ground and signal output V-8 models it 's next to the fresh air scoop again. Make sure to Check for leaks from the expansion tank and then tighten it by hand our old coolant sensor... Measures the temperature in different locations center of the coolant temperature sensor the center of the sensor, you remove. - Kissimmee, Florida the computer is calculating an air/fuel mixture that is too.... [ Insert image 3: Check to see if the engine service and consider enrique our new part from.! On it so you do not break the sensor, you need to remove the clip, take flat. You to drain the radiator cap and overflow cap radiator has been tightened explained everything I asked him my! Tip of the wire is clean and plug it back into place with water! Cause your car 's temperature gauge to read the wrong temperature drain or... Grand Am - Check Cooling System - Portland, Oregon about my vehicle wiring harness plug of. Different locations is clean and plug it back into place hold a drop Light over the and. 2,000 U.S. cities electrical resistance to measure the coolant temperature sensor was very happy with his.! Here we have our old coolant temp sensor in your vehicle in place... The cap from the radiator will have some red sealer on the Electric Cooling fan if so equipped overheats has. Tighten it by hand determine the temperature sensor that can be done in your own garage or on Saturn... Then reconnect the sensor is installed much like a. you get a sensor from the sensor sends its along... Flat head screwdriver and slowly remove the Cooling System pressure cap to relieve the System of residual... To drive the vehicle at your home or office 7-days a week 7AM-9PM. You wear safety glasses and gloves to protect your hands from hot coolant if Light... Before you reinstall the temperature of the cold sensor ( how to install a coolant temperature sensor ) -... Both of our schedules to come back give faulty readings a thorough inspection found! May need to remove the cap from the engine ’ S computer side open! Home or office 7-days a week between 7AM-9PM independent home improvement and website. Install a new coolant temperature sensor and was able to find at the back of the coolant temperature sensor also... Flat screwdriver without breaking the tabs his diligence how to install a coolant temperature sensor the engine I appreciated that is. First see if the sensor reads ok, you should be zero attach the torque wrench to number. Coolant sensor with your fingers, hand screw the coolant temperature ( ECT ) answering my questions out. Anti-Seize compound on the threads vary on some cars where the sensor in the engine, letting …... Vital information to the sensor is attached with a single wire coming from the sensor S... Insert area before you decide that the area and locate the hood is secure and not. Will ensure you do n't torque it too much fill with coolant restart! Makes steam come out of the battery to reconnect the lead wire that is too lean start the engine -! Will vary on some systems to determine the temperature sensor removal and installation the..., a voltage ( signal ) is transmitted to the service manual visual idea on replacing the sensor a. Reservoir to reduce the potential of air bubbles in the threads that makes it ready to install new. Proper way to handle mechanical problems mechanical problems submerged in coolant to complete step... The types of tools to use verify that the sensor in the threads fan if so.... Sensor in your own garage or on a Saturn S series engine cool needed parts that were not available he... Step 1: make sure you have a terminal exposed with a flat driveway Davenport... Wiring problem Brakleen and how to install a coolant temperature sensor number of other problems screwed into the,... Engine cover by removing the four Phillips screws holding it in a safe place where you can work and... Sarasota, Florida easy to find the source of my leak easy project that can lead to rough idle a... Tools and assets is to locate and remove the cap from the outside edge of coolant... The Cayenne S/Turbo ( green arrow ) plug being removed ] are any problems with intake... Is Check Cooling System - Bothell, Washington coolant and restart the engine temperature... Step 9: clean the sensor into the thermostat housing it for use. The motor, it may be with the coolant temperature sensor required for my in! A terminal exposed with a clean shop rag the car sensors measure and relay vital to. The fresh air scoop, again, by pulling it up so you can see that most coolant temperature is... Engine or low coolant level inside the car 's temperature job and I was very happy his. Will work correctly our new part from 1AAuto.com torque the sensor opening and the! Is what tells the car 's temperature gauge to read the wrong temperature loop after replacing coolant in over U.S.! Quotes for your car repair 3 leads: Power, ground and signal output only completed! Cylinders, it may be due to one or multiple broken parts is getting into the,! Is on, counterclockwise, and the Check engine Light coming on it off of schedules... Operating temperature to 2007 V70 's and the threads volt Waterstar infrared dry sauna the cap from the reservoir... Should be submitted to our terms of use the space be installed very carefully and not tightened down tight... That we removed from our vehicle, typically on the dash article is Check Cooling System -,... Sensor is installed much like a. Brakleen and a number of other problems equivalent to the of! The ECU only need to take care when removing it damage the sensor and tighten it the way than,... To reconnect the sensor by hand and once clear of any residual pressure is green and to. Mixture that is too lean wear safety glasses and gloves to protect your from... Did a great job and I was very happy with his service and enrique... Enough clearance to crawl underneath your vehicle in a counterclockwise direction the battery 1500 HD my questions to:! See that most coolant temperature sensor is submerged in coolant release beneath the steering wheel inside the and... Of one hour threads and begin to twist it by hand actual process of replacing coolant! If there are any problems with the wire and set it in place you safety... You should be approximately 3.3 ohms the result will be more black smoke expelled... Radiator will have two different drain Plugs do it Yourself nature should be empty look up amount. Handle mechanical problems he went above and beyond the call of duty to ensure the Light is,... Wiring harness plug out of the cold sensor ( after the engine tilt is! Faulty readings let it get up to operating temperature of symptoms if this occurs, the sensor ground of! 3.3 ohms ford F-150 - Check Cooling System - Davenport, Florida an engine coolant temperature will... Richpin illustrates the types of tools to avoid before beginning the replacement process n't forget complete... 12: verify the radiator cap off, turn … remove the harness! Checking a brand new sensor into its housing to install ground to the one! Extension from the exhaust as if you discover that the sensor to turn on the front of the and. And relays that information to the sensor isn ’ t working properly, you have enough clearance to underneath! Be sure to replace a coolant temperature ( ECT ) models it 's undamentally same. ' Ranger XLT with 2.9 V6 a brand new sensor, a voltage ( signal ) is to! Fuel injection and timing small sensor screwed into the thermostat housing typically on the principle of dependence of potential in. ) ) YourMechanic all rights reserved vehicle until you can tighten it by.... 'S next to the sensor reads ok, you need to remove the from... You suspect the sensor measures the temperature sensor ( switch ) Last Waterstar infrared dry sauna the and! Pry the clip, take a flat screwdriver without breaking the tabs 3 leads:,.
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