Idles great w/o A/C

[cwass99@rogers.com (cwass99@rogers.com)]

Hi,
     Since nobody else replied, I'll take a shot at this.  On my 8v, there are
2 valves on the passenger strut tower, one of which is supposed to open up when
the AC compressor engages to stabilize the idle.  I would guess the 16v has
something very similar since the compressor can take a lot out of the engine
when it's engaged.
     So, I would suggest start looking for whatever is supposed to stabilize
the idle when the AC compressor is on.  Is there a valve that should open but
isn't?  Is is opening but causing a vacuum leak?  Is the AC compressor
partially seized?  Is the system AC overcharged (this can cause the compressor
to work extra hard)?

Good luck!
Colin


On 03-Jun-2002 Elijah R wrote:
> Hey all, I got my timing issues work out and it purrs like a kitten, except 
> when I fire up the A/C. The idle with the A/C on high is very erratic and 
> surging... about 650 to 1200 to 650 and so on. Turn off the A/C and it purrs 
> fine again. 50% of the time the idle will normalize after 4 or 5 surges, and 
> sometimes it surges until I start rolling the car again. Can anyone advise 
> me about what component could be causing this? Normally I would ditch the 
> A/C system, however being a black car with black interior, and like today 
> its 91 degrees, sweat central. Thanks again for all your help.
> 
> 86 16v Roc
> 92 Honda Prelude (F/S $1200.00 a.s.a.p.)
> 92 jetta caret
> 95 gti vr6
> 
> 
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-- 
Cheers,
Colin

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