aaaaamartin Posted May 14, 2018 Report Share Posted May 14, 2018 Hi all, it's a couple of weeks now that the engine has an unstable idle. It almost stalls if bad enough. This only happens when engine is warm, and running for 30 seconds or so. Have attached TunerPro Capture. Works with the $88 definition. Will someone please have a look. I'm not into this, especially when it comes to fuel mixture / integrators and so on. What I did is visual inspect the IAC-Motor and spray-cleaning the throttle body. Regards Martin Unstable_Idle_1990_Regal_3.1.zip Quote Link to comment Share on other sites More sharing options...
Imp558 Posted May 14, 2018 Report Share Posted May 14, 2018 Clean the IACV as well as you can, and the seat. If it's IACV usually the idle quality will improve but nothing beats replacing it. If you just crack the throttle body and the idle smoothes out that's a typical sign of a bad IACV as well. Quote Link to comment Share on other sites More sharing options...
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