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Fast Idle Issue... Have Done The Search Just Want To Make Sure Im On The Right Track..

TUF250

By TUF250,
in Engines & Forced Induction

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TUF250 Proficient

TUF250

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Hi guys. My 33 gts-t recently developed the common idle hunt and stall issue. Pleased to report for all those people who search in the future that cleaning the AAC valve almost fixed the problem. It was about 75% there, I then changed the oxy sensor and the car was back to normal 100%. I was thrilled.

I reset the computer aswell.

Now about 2 weeks later a fast idle issue has developed (it dosnt end!)

It is intermitant. Hot or cold, it varies.

The cars idle is smooth but will pick up to about 1800rpm and sit there. Sometimes it will settle down to the normall 7-800ish and othertimes it wont. Its not doing it at the moment but im sure it will come back.

Thoughts? Has anyone had this issue and found the solution?

I have cleaned the afm and set the TPS to 0.43 at closed throttle and 4.1 at WOT with ign ON

Im thinking faulty TPS or AFM? what are peopls thoughts on what would cause this? just dont want to spend money replacing uneccessary things.

thanks guys

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