Low idle, high idle... never normal. '97 D1

[ericstock]

Alright. So, it almost stalled-out at idle a couple of times during the past week. It's still WAY better than pre-Sea Foam. Any objeactions to another treatment with Sea Foam? Maybe just the fuel and intake this time?

 

[joey]

No issues at all, all it will do is clean up the valves and the pistons... as well as the injectors of course.

 

[ericstock]

It's back, doing the same crap for the past couple of months. I EVEN put a new stepper motor in , and it made no difference. I saw another post about resetting the ECU by unhooking the battery for a few hours, I'll try that. Is there any chance it could be the TPS (throttle position sensor)?

 

[ericstock]

OK. It turns out that it was the BATTERY!!!! It was just on its way out, and I guess it didn't have enough juice to power the system properly. It was a yellow top optima, about 4 years old. It was such a gradual decay over the years I couldn't tell it was fading....Put another optima in, and fires up nice and strong with none of stalling issues that I was having!!!

 

[joey]

Glad to hear you found your issue.