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dos531 dos531 is offline
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Join Date: Apr 2014
Location: Pasadena, CA
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'86 930 Idle Surging

Once it gets warm the idle starts to surge between 1500 rpm and dropping down to around 500 rpm. I hear a noticeable click right before the idle drops and right as it catches at the bottom. Are there any solenoids etc that control idle on this car? The AAR, AAV, and Decel valve are all removed and plugged.

Mods are gt35r, tial wastegate, Leask WUR with rpm enrichment, Mahle 3.4 pistons & cylinders, etc.

It seems a previous owner was having the same issue and apparently never resolved it before selling the car to the owner I purchased it from. Here is the thread from before. He didnt mention anything about the click, which seems to me like something is opening and closing in relation to the surge.
Inconsistent idle surge

I have attached a video of what it is doing. Ideas?
Porsche 930 idle surge - YouTube
Old 05-04-2014, 03:06 PM
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