bizarre stalling behaviour 87 4kcsq

[Robert M]

    Two suggestions from here:

1.  Make sure your airmeter is free to move and that the plate is centered.

2.  When I clean my ISV I like to lube it a bit afterwards; silicone spray 
or the like.  Possible it's _too_ clean?  Make sure the contacts are good 
too- clean them and use some silicone grease to seal it up on reassembly.

Luck,
Robert

>From: Brendan Walsh <audicted42 at gmail.com>
>Reply-To: Brendan Walsh <audicted42 at gmail.com>
>To: Q-list <quattro at audifans.com>
>Subject: bizarre stalling behaviour 87 4kcsq
>Date: Mon, 9 May 2005 07:36:39 -0400
>
>Hey all, my new q is not so pristine as i thought. It's exhibiting a
>bizarre stalling behaviour. Only happens when the car is hot, been
>running for 1/2hr or more and returning to idle from cruising. I've
>already gone over the vaccuum lines and can't see any obvious leaks,
>one small white plastic line along the firewall was cracked. i patched
>that with some duct tape for the moment, and the line for the vacuum
>advance was sketchy so i replaced that entirely, Checked all the nuts
>around the valve cover. I also soaked the ISV until the carb cleaner
>came out clear and still no luck. If I blip the throttle as it comes
>down it will keep idling, but it will pulse by about 200-300 rpms and
>slowly even out. Sounds like my ISV is shot, or intermittent, but i
>figured I'd pose the question to the experts. What's my next step
>here? I was thinking to put hose clamps on all the vaccuum lines that
>are supposed to be interferance fits(like in the egr system) .I 've
>already gone around the engine bay with carb cleaner while the car was
>running to try to find a leak, but no dice.I know from searching the
>archives Alan had a similar problem in his 5K, but i didn't see a
>resolution.
>
>Thanks!
>Brendan
>
>--
>"To err is human, to repent divine; to persist devilish." -Ben Franklin
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