On my 97 GT I was getting a DTC code for the TPS. I replaced the TPS and still got the DTC right after clearing it. After posting about that another forum reader told me a few things to check and it if was not that confirm the black wire to the TPS was a good ground. Sure enough I found 3 ohms to ground on that wire. So, i put a temp. ground on the black wire to the TPS and the DTC code stopped. So, I assume the engine harness ground is not good. Anyone know where the engine harness gets its ground?
