Did you replace TPS yet?
I had this issue on and off for almost a year.
Car would be fine for months, then start acting up.
Mine would like to idle 1500-2000 by itself.
I could do 40 mph without putting my foot on the pedal.
I finally bought a new TPS after getting annoyed.
That fixed my idle issue.
I should have updated this thread to, but I was able to fix my idling issue. Turns out the injector O-rings were bad and allowing it to suck air. I knew it was something to do with them or the intake gasket. Luckily, I narrowed it down to them by taking some carb cleaner and spraying directly over/on the O-rings which made the engine change idle.
Doing the O-rings first also was the easiest thing to do and the parts and shipping from Rockauto was only like $6 I think.
_________________________
charlie
black 98 gtp sedan, 222,000 and running great with the new used tranny!
zzp 3" d/p aluminized
dhp 1.0
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