Re: '87 5KCSTQ Idling Problem

[Andrew Duane USG/PE <duane@zk3.dec.com>]

Hairy green toads from Mars made Rob Silcher say:

> I'm driving home at lunch, the car isn't hot yet - I come to a stop light 
> and instead of idling at 900 rpm its running at 2800 rpm.  I get home 
> - open the hood, play with the throttle - its not stuck.  It eventually 
> goes down to 1000 rpm but kind of rough - sort of bouncing up and down.
> 
> If I give it a shot of gas it goes way back up to 2800 -3000 rpm.

Idle Stabilizer Valve.

It's a small cyliner, about 1.5" diameter, 4" long, with vacuum
hoses at each end and an electrical connector. It is usually stuck
on top of the cylinder head near the front of the car.

They go bad a lot, but sometimes the valve inside gets gummed up and
can be cleaned with contact cleaner.

Check the archives for a complete description.

-- 

Andrew L. Duane (JOT-7)			duane@zk3.dec.com
Digital Equipment Corporation		(603)-881-1294
110 Spit Brook Road			http://www.zk3.dec.com/~duane
M/S ZKO3-3/U14
Nashua, NH    03062-2698

Only my cat shares my opinions, and she's very stable, thank you.