Re: High Idle problems

[murari@umiacs.UMD.EDU (Murari Srinivasan)]

> From: PDQSHIP@aol.com
> Date: Wed, 8 Mar 1995 15:05:39 -0500
> To: mikes@specnet.com
> Cc: quattro@coimbra.ans.net
> Subject: High Idle problems
> 
> Mike, I have an 86 5ktq and an 87 5ktqRS2 (320hp) both of which have had the
> same problem with fast idle...  First off, your idle should increase with the
> a/c on...  No it shouldn't be 1400rpm...  My suggestion is to 1) run the
> diagnostic chk to make sure you have a working idle stabalizer valve, then 2)
> get mr. screwdriver and set the idle screw (top of t-body) down below spec
> (950 +/- ?), the stabilizer valve (if working) will kick in and raise the
> rpm's back to spec...  This test will tell you if you have the same problem I
> did, that is, the idle screw is coated with some type of goop at the factory,
> which must have a given life...  What the lack of this goop does is lets the
> screw back out of the t-body slowly over time...  My cure?  used a dab of my
> kid's silly putty after setting the screw,  seems to work fine.  If your

[snip] 

I had the same problem on my 5k (1985), and it turned out
that after i adjustted the idle to about 1000 rpm, the screw
would slowly work itself out, and thereby raise tthe engine
rpm....funnnily enough, this used to happen only when the
car was put into idle with the engine on.

Anyway, some crazy glue on the threads fixed it - but i would 
do what Scott did.

Murari