[V8] running short of hair to pull out

Paul Jager pjager at telus.net
Tue May 13 21:53:16 PDT 2008

Do you know when the engine speed sensors were changed? There is a pair of
them. Failure mimics fuel issues.

And finally Pull the codes! You really need to do that.

-----Original Message-----
From: v8-bounces at audifans.com [mailto:v8-bounces at audifans.com]On Behalf
Of too many quattros
Sent: May 13, 2008 1:21 PM
To: V8 Audi Fans
Subject: Re: [V8] running short of hair to pull out

also check distributors and make sure caps and rotors are okay and not
cracked.  Check plug wires for grounding issues.  check distributor gears to
make sure one is not stripped, cracked or the dowel has not backed out and
gear is rotating on shaft.  all connections for switches and sensors
mentioned in other posts.  I have had the smallest amount of water get in
connections and have transference of signals between individual connectors.
while in there, check each connection (gang plug) for corrosion.  Double
check cam/crank timing.  check distributor timing (i know this is relative).
check for plugged exhaust.  check for intake restriction.  check fuel
filter.  check for kinked fuel line.

I know some of these are long shots, just tossing everything out i can think



PARTING:  1972 Mercedes Benz 280 SE 4.5
PARTING:  1986 Audi 4000 CS quattro

> Mike,
> Others here know more than I do, but here's what I would check:
> 1.  Make sure throttle position sensor does not have water in it.
> 2.  Check to make sure Hall Sender at right rear distr. in good shape.
> 3.  Check oxy sensor.
> 4.  Check engine sensors.  I recall that the failure mode of one of them
is to
> cause the car to stall, but it usually runs okay until then, but the other
> causes rough running I believe.  I think one of the ways to tell relates
> what the tach is doing.  Maybe someone else can chime in?
> Good luck.

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