fast idle

Henry A Harper III hah at
Mon Aug 30 14:31:54 EDT 2004

> My 88 5kt idles around 900-1000 rpm normally.  I expect it to
> idle up when the air cond. is turned on, but it jumps to about
> 1500-1800 rpm. is there a way to idle it down?

Does the A/C seem to work ok? My GTI did a similar high idle with A/C a
while after an R-134a conversion, and wasn't cooling that well either.
Replacing expansion valve fixed it, seems that something jammed the valve
open so the compressor was running but not having to do much work, thus the
idle speed compensation made it run too fast.

Henry Harper hah at
1991 200 quattro, 120k, still R12, pretty cold.
1988 GTI 16v, 243k, R134a, nice and cold

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