RE: rough idle

["PAT MARTIN" <MARDKINS@classic.msn.com>]

More likely the idle stabilizer valve.  Either replace or clean it out.  It 
could be the oxy sensor but I would check the valve first.

Pat Martin
864000csq turbo, 2 1/2 cat back, H&R-Boge, MC and loving it.  Drilled rotors 
stopping it. Koenig Cobra 16x7 with AVS Intermediates turning it,  K&N and 
uh....  
95 subaru legacy 
Bothell, Wa


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From:  owner-quattro@coimbra.ans.net on behalf of Dylan Jenkins
Sent:  Monday, May 11, 1998 7:18 AM
To:  quattro@coimbra.ans.net
Subject:  rough idle

Howdy all......

I'm currently resurrecting an 85 4kqs from the local Bug Shop bone pile. It
was wrecked a few times, but the rust prevention on these cars is
incredible. Car has approx. 100k+ miles (odometer gear busted or
disengaged). Recent work and mods include Boge Turbogas shocks, sport cam
from Blaufergnugen!, new lifters (6 were dead!) tune up (plugs, wires,
cap/button, fuel filters), K&N air filter.

My question is with the idle. Ever since I've owned the the car the idle has
fluctuated (when warm) between 500 and 1200 rpm when I come to a stop. Even
more noticeable now that the sport cam is in. We still need to mess with the
timing, but I think the oxygen sensor may be on the way out? How do I check?
What is the normal lifespan for an o2 sensor (I beleive mine is original).
Also, might the catalytic converter be on its way out/full of garbage (what
is normal life of cat?). I welcome input directly to me or via list. Thanks. 

Forestry Extension Associate
Virginia Tech Dept. of Forestry
228-A Cheatham Hall (0324)
Blacksburg, Virginia 24061	       
(o)540/231.6391
(f)540/231.3330
dylan@vt.edu