Re: 5KT: Mysterious intermittent stall

["Scott M." <scottmo@teleport.com>]

Arun,

I don't know if you have the late '85 with the MC engine
but you may also want to have the decel valve checked out,
these have been known to stick open during deceleration
which cause a very lean condition. It is located between
the air cleaner/fuel distributor housing and the right
fender. Removing the r/f wheel and inner plastic fender
liner will allow you to get a better look at it. 

This solenoid is designed to open during decel and allow
the air flow metering plate to fall down and shut off the
fuel to the injectors. The idle stabilizer relay controls
its operation.

A general vacuum leak will also cause this behavior as 
other list members have indicated. Check those crankcase
breather hoses!

HTH
Cheers
Scott Mo.
89 200TQ
HexBytenMonster
scottmo@teleport.com

----------
> From: Harrison Sapir <hsapir@buckeyeweb.com>
> To: Arun Rao <rao@pixar.com>
> Cc: quattro@coimbra.ans.net
> Subject: Re: 5KT: Mysterious intermittent stall
> Date: Wednesday, December 31, 1997 4:16 AM
> 
> sounds like a fuel distributor or idle stabilizing valve.
> 
> ----------
> > Has this happened to anyone out there?  My '85 5KT
(154K) will
> > 	occasionally (a) stall while coming to a stop, and (b)
not
> > 	start for a few minutes. So far, it has always started
fine
> > 	after letting it sit for a few minutes.
> > 
> > 	Either myself or my mechanic have done the following:
> > 	
> > 	1. Distributor cap and rotor replaced.
> > 	2. Fuel pump relay replaced.
> > 	3. Fuel filter replaced.
> > 	4. Six-month-old ISV (VDO).
> > 
> > 
> > 	Idle is somewhat low and rough when the engine is
cold, but fine
> > otherwise.
> > 	No apparent vacuum leaks: boost gauge registers 0.4 or
so at idle
> > 	and 1.5-1.6 at full boost (it's got a Charlie Smith
spring in it).
> > 
> > 	Could these be symptoms of a dying fuel pump, by any
chance? Any
> > 	other suggestions?
> > 
> > 	Thanks, folks!
> > 
> > 	-Arun
> > 
> > --
> > Arun Rao
> > Pixar Animation Studios
> > Pt. Richmond, CA 94804
> > (510) 620-3526
> > 
>