Just finished flushing the cooling system on a 97 360. While I was at it I replaced the thermostat and now the temp guage will not move from its rest. I believe I got all the air out and the heater blows hot air. I feel warm coolant in the rad, but I'm just not understanding the temp guage. Had theengine running almost half an hour.

 

Maybe the wire got knocked off (or not replaced) the sending unit?

 

did you knock the guage wires loose..i did that before

 

While looking at the wires you guys mentioned I noticed one of the two temp sensors beside the thermostat was leaning over and basically broken. Guess I inadvertently bumped it during the swap. Anyway, $15 later for a new sensor and the guage works fine. Thanks guys.

 

Oopsy!

 

did you have a hard time replacing the thermostat, because i looked at it the other day and it looks like a pain in the *** to replace.