I just installed a brand new PFC v. 5.08 into my 93 cali car. i cut the appropriate wires and when i turned the ignition key to the "on" position the exhaust temp warning light is on. I look in the commander and I don't see any sensors that indicate abnormalities. To my understanding this light is suppose to be OFF when things are all ok. I don't quite want to start. also have the fan mod done... the one where you car stays on after u turn it fof.. could that be cause it? anyone else sovle this problem?

 

My overheat exhaust light comes on until I start the car also. Quit being so paranoid .

 

ditto, except that the manual and FAQ instructions said that it wasn't supposed to be on. It goes off after starting as you said. I was concerned, until running the sensor screen showed nothing was wrong.

 

I need to correct that in the FAQ - the big thing is to look for flagged sensors in the sensor check screen. If you have an invalid input, the value from the sensor will be lit in reverse. The light seems to come on at startup so you can make sure the bulb is still good.

Might also want to see my thread about making the warning light feature more useful.

Dale