Coolant Temperature Sensor Problems

[tatertot91]

Started having an issue a while ago, coolant temp sensor crapped out on me so i replaced it with a new one. The new one didn't work so i replaced it an OEM one and it worked great up until this weekend. Took the car for a few hundred mile trip and while driving around town the gauge started jumping around down to 0 and back up again. I checked the voltage at the wires heading to the sensor and it reads voltage but i'm pretty sure i need to check if the voltage is within a certain range. Gonna replace the sensor one last time since its cheap.

Anyone know what else this could be? Its would be the 3rd sensor i've put in and i dont think its the plug or wiring.
Any input helps
thanks

[pajeff02]

GM or parts store brand sensors? Have you inspected and/or traced the wire harness to make sure you don't have a bad connection or something? Could be corrosion in the plug at the sensor too.

[tatertot91]

GM or parts store brand sensors? Have you inspected and/or traced the wire harness to make sure you don't have a bad connection or something? Could be corrosion in the plug at the sensor too.

One was oem the other 2 were aftermarket. I still don't see it being the sensor. I'm gonna have to check all the wiring and make sure nothings wrong there. Was over 250 miles from home so I couldn't diagnose the problem 100%. Will have to check everything over later. I think I'm gonna have to look for anew plug and double check everything.

Liking the new avatar btw

[pajeff02]

Thanks! Let me know if you need a diagnostic procedure or diagram. I have the factory books for our '02 -- probably all the same for your car.

[tatertot91]

Thanks! Let me know if you need a diagnostic procedure or diagram. I have the factory books for our '02 -- probably all the same for your car.

Will do. Have to take a better look later this week when i'm not working

Damn hard to squeeze time for this car nowadays

[pajeff02]

Will do. Have to take a better look later this week when i'm not working

Damn hard to squeeze time for this car nowadays

I have until April when our car will go back on the road to complete repairs and upgrades. Must be real nice being able to drive your car year round.

[tatertot91]

I have until April when our car will go back on the road to complete repairs and upgrades. Must be real nice being able to drive your car year round.

Oh yeah, i couldn't imagine putting her away for months at a time. Guess it's something you gotta get used to up there.

[Blackbird WS6]

im having problems with my rad level sensor, it leaking....had an idea to put some silicone around it BUT may start a whole new problem if i ever have to replace it

keep us updated on your problem and what the fix was tater

[tatertot91]

im having problems with my rad level sensor, it leaking....had an idea to put some silicone around it BUT may start a whole new problem if i ever have to replace it

keep us updated on your problem and what the fix was tater

I will update as soon as i know more.
Good luck with your issue as well.

[0rion]

the odds of 3 sensors going out is pretty low....check the wiring and like pajeff said, check for corrosion or something. Could just be the sensor but it sounds like you have another issue.