Weird Idle problem.

[jason@scirocco.org (Jason)]

Hey --
         Looks like a couple other guys got to you first -- with lots of 
good advice, too.

         While it can be your idle switch not working properly, I'd clean 
out your idle stabilizer first.  The reason that it's fine when you drop 
from over 2000rpm is because it has longer to react to the dropping 
revs.  Mine did the same exact thing -- it was annoying beyond belief.

         Take out your idle stabilizer and clean it out with carb cleaner 
-- chances are it'll be nasty in there.  Put it back together, and while 
you're there, clean off the airflow plate -- and make sure your idle switch 
is making proper contact.  If not, it's easy to move, just get a 
screwdriver that will fit back there and move it.

HTH!
Jason



At 04:49 PM 9/20/2002, Euroroc II wrote:
>Oops I forgot,
>
>'87 16V 1.8L mostly stock, no major engine mods.
>
>-RGK -
>
>
>At 01:45 PM 9/20/02 -0700, Euroroc II wrote:
>>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
>>
>>
>>_______________________________________________
>>Scirocco-l mailing list
>>Scirocco-l@scirocco.org
>>http://neubayern.net/mailman/listinfo/scirocco-l
>
>
>_______________________________________________
>Scirocco-l mailing list
>Scirocco-l@scirocco.org
>http://neubayern.net/mailman/listinfo/scirocco-l