Ok here it is my temp gauge stoped working it now reades 0 but some days it goes crazy. I will go from 0 to 260 back and forth and do that for a long time then back to 0 does any one now how to fix this a need a temp gauge. the engine is a 87 formula with a 350 TPI

 

that sounds like you need a new temp sender

 

or has the wire come off the sender and the terminal bouncing around on something? if it's off, it'll read "0". if it hits a ground somewhere, it'll max out "260". check your wire. if that ain't it, change your senser.

KAM

 

Is the temp sender the one on the driver side beneath the exhaust manifold? I have the same exact problem.

 

does anyone have a picture of what the temp sender looks like. is it attached to a wire?