Re: Temp Guage Stopped Working
First I would check to be sure there is power to the gauge (probably a purple wire) when the ignition is turned on. If so I would measure the resistance at the gauge between the sender wire (probably tan) and ground as you warm up the engine. A typical sender will read out values in the range of something like 40-240 ohms. Obviously it should start out at a certain value when the engine is cold, and increase (or decrease, I can't remember which) as the engine warms up. If it does that, and the gauge doesn't move, you have a bad gauge. If not, repeat the test at the sender, which is located at the thermostat housing. There may be a couple things there, a cooland temp sensor for the EFI, for example. The sender you are looking for should have a single wire, the same color wire you saw at the gauge. If you get no change there, you should replace the sender.
The other easy thing you could do is ground out the sender lead with the key on, while watching the gauge. This would be an easy way to condemn the gauge - it should spike when the lead is grounded. Hope this helps.
