Coolant Temperature Sensor
Every vehicle has at least engine coolant temperature sensor and they serve a very important role in keeping your car running at it's very best. The engine coolant temperature sensor (ECT ) is the first way that you know you have an overheating problem. When your coolant needle begins to creep into the red, this is your ECT telling you that the car is running too hot.
Your ECT also lets your ECU know that the engine is ready to operate at the warm map, and try to attain the best air/fuel mixture possible. This is known as closed loop operation, where your ECU tries to attain stoichiometric value.
When you have a problem with your ECT, a OBDII trouble code can also trigger on your instrument cluster indicated by a flashing check engine light symbol. These trouble codes can vary depending on the make of your vehicle, but common ones are P1258, P0128, or P0118. If you need assistance with your check engine light or your OBDII system, head over to DTC Doctor at My Pro Street for more information.
Engine Coolant Temperature Sensor
The ECT can often be confused with the "dummy light" or the red warning light that pops up on your dashboard. This is usually a one pin sensor, where as the engine coolant temperature sensor is a two or three pin unit.
The OBDII trouble code of P0118 is indicating a serious problem with your Acura’s Engine Coolant Temperature sensor. This sensor relays the operating temperature of the engine to your Acura P75 or P72 ECU.
Today I’ll be showing you how to replace engine coolant sensor in a 1998 Acura Integra GS with a 1.8 liter B18 non VTEC engine in it. This DOHC engine has the Engine coolant Temperature (ECT) sensor located on the side of the cylinder head.
To properly remedy your P0118 trouble code, it would help if you had a scan tool that was capable of reading real time values from your P72 or P75 ECU.
How To Change your GMC Sierra Temp Sensor
This guide on how to replace your GMC Sierra ECT assumes you have already done the proper legwork to make sure your van or truck is not really overheating. Check our guide here to do this now if you haven’t taken those steps.
Your Sierra ECU stores the information regarding your 4.8 liter overheating when it first occurs. The ECU will store this information in your PCM Failure Records.
If you do not correct the overheating issue, or the sensor issue, the next time you start the car and the failure happens, your PCM updates the condition to the stored freeze frames.
This DIY guide assumes you have already eliminated every other source of your overheating issues, and your ECT is just not acting right.
Nissan 350Z Thermostat and coolant temperature sensor How To
Open your hood and drain your Nissan radiator completely. For the trouble code of P0128, we recommend that you always use a genuine Nissan thermostat as a replacement.
While it’s not typical, the engine coolant temperature sender in your VQ35DE could be bad and / or sending wrong information to your Nissan ECU. This two prong engine coolant temp sensor (ECT) can be tested to see if it’s still in proper working condition.
The part number for this Nissan ECT is 22530-44B20, 22630-0M200 or 22630-43Y00.