I bought a 93 trans am and after one day it started to run like **** ! It keeps resetting the same code for the coolant temperature sensor. I've changed the sensor 3 times , the wiring is ok and I changed the pcm to a spare one I had sitting around . After all of that I reset the code but this one comes right back. The car also misses horribly but I'm unsure if that's because of the code or what. I need help figuring it out if anyone would be willing to give me a hand. I have a garage with AC and will give you food/beer/money whatever. Thanks.

 

water pump and optispark ?

 

Did you replace the correct Coolant temp sensor for the PCM you know it has 2 different temp sensors 1 for the dash and 1 for the PCM

 

Water pump isn't leaking and I changed the cap and rotor on an opti that I had in the garage then put it on still runs like garbage .
Yep I replaced the right sensor ( the one in the water pump )

 

I might be able to come up with some of my diagnostic equipment. Most I ask for is gas money. But let me check my schedule and Ill get back to you.