Previous to 94, my wiring diagrams are lacking, I don't have a wiring diagram for your temp gage. I did look at an online partsbook for your year--make--model for temp switch and temp sensor, it showed two different parts?
The codes probably don't matter, but, did you try cycling the ignition switch? On--off, on--off, on--off, on. You turn the key till the dash lites come on, no further, then the mil starts flashing, you count the flashes to get the codes.
Friday, July 17th, 2009 AT 1:37 PM