hey guys, i replaced my bmc and now my temp gauge isnt working. i think i broke a wire or missed a ground somewhere. the gauge worked just fine before hand. looking around i cant seem to find anything unpluged. all fuses are good. i was hoping to find a wiring diagram but havent been successful.

 

bmc ?

 

brake master cylinder

 

Year of car, V6 or 4 cylinder?

 

sorry i updated my signature after this post with all the info but it dosent seem to work in retrospect....

its an 87 3sfe automatic

 

The water temp switch is located under the coolant bypass housing above the starter.

Check if the harness plug was disconnected.

Water temp wires are yellow/green stripe.

If the other gauges work, the fuse is OK.

 

beautiful information...i found it just as you said. it was connected but i pulled it and there was a good bit of corrosion. sanded the contacts a bit and now the gauge is working! the rest of the switch is just as green and will likely get replaced. strange tho, it worked just fine before i did the bmc but after refused to work from corrosion. never would have guessed that.

thanks for the help!

 

Great job! Thanks for posting back with the fix.

 

EEEEEEERRRRRRRRRRR its so irritating searching forums to find someone with the exact problem i have, years old, and no outcomes. In a perfect world...lol

 

Concur!

100's of problems are resolved but no one posts back with the found fix.