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Discussion Starter #1
I have a stock 88GT with a MAF conversion and recently the idle just drops randomly. After driving and it sits for about 2 minutes idling the RPMS drop and it starts to lope and off idle cruising it lunges forward. Any ideas? Ive had the conversion done 5 years ago.
 

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I had almost the same problem mixed with a little surging idle. Vac lines to smog pump were trashed. It will at least be a cheap and easy place to start.
 

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Mine stilll has some surging when it's cold. But I chalk that up to the MIL eliminator I have for the EGR until I get a tune. Dream is right, it could be anything. Just pointing a cheap way to start.
 

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Discussion Starter #6
No video yet. At first start up in the mornings, it lope heavily and dies immediately. After a few minutes it's fine. I eliminated the smog and all EVAP lines and smog vacuum lines. The idle doesnt surge up and down, it just drops to 500rpm and lopes.

---------- Post added at 09:53 PM ---------- Previous post was at 09:52 PM ----------

I do appreciate yall input on this
 

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Sounds like your IAT (Intake Air Temp sensor) may be malfunctioning.
 
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