Weird Idle problem.

[tpiwonka@ttacs.ttu.edu (Robert Piwonka)]

yep yep mine does it to, but you know that i do... let the clutch out before
2000rpm :)  easy fix.

Robert Piwonka
----- Original Message -----
From: "John Erickson" <ranahan@charter.net>
To: "Euroroc II" <flaatr@yahoo.com>; <scirocco-l@scirocco.org>
Sent: Friday, September 20, 2002 4:20 PM
Subject: Re: Weird Idle problem.


> I think Allyn nailed it.  I have the exact same problem
> and both my micro-switches and my ISV are new.  My dpr
> current is set to bounce off 2.5ma on the low end (3-3.5
> average).  I'm going to set it back to spec (10ma) and see
> what happens.
>
> I set the dpr low on the advice of many knowledgable
> people.  It looks like it created a problem.
>
> John
> 87 16v
>
> Euroroc II <flaatr@yahoo.com>
> |Heres one for ya...
> |
> |My car idles perfectly, closed loop @ 870 RPM, smooth,
> |stock cam. new distributor & Cap & Rotor, differential
> |pressure regulator & fuel accumulator are new too along
> |with plugs, filter, and oil. The alternator is working
> |fine and the battery is happy, 13.5-14V from alternator,
> |no hard cranking when starting,  etc. etc. etc.
> |
> |When I drive the car and come to a stop, slowing in gear
> |to below 2K before letting the clutch out the engine
> |speed will drop to 500 RPM'ish bog for a split second
> |then return to perfect idle (or lower and occasionally
> |stalls although not that often) . This is repeatable and
> |annoying. Revving up and letting it drop is fine, holding
> |at a higher RPM and letting it drop is fine. the problem
> |only seems to happen when the car is driven, higher RPM
> |under load and let it out of gear under 2K. Letting it
> |out of gear above 2K is good, engine returns to idle
> |without dipping.
> |
> |Strange thing is that if I have the A/C on the entire
> |problem goes away.
> |
> |I've had it in the shop several times, for many days, and
> |they can't seem to figure it out. The problem remains so
> |I ask the group...
> |
> |Anyone have this problem before and how did you fix it? I
> |may have left out a detail or two so ask me any questions
> |you have.
> |
> |-Raffi
> |
> |
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>
>
> John
> 87 16v
> Long Beach
>
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