[V8] 2 things

[Ingo Rautenberg]

Hmm.  On #1 I suspect a grounding issue within the IC.  Check the soldering
points lately. All gauges are supposed to be not powered with ignition off.
Is it just the oil pressure gauge, or one of the other gauges as well.  I
suspect bad soldering joint or short somewhere.

#2 Hmm.  I've had this before, and you're right in thinking vacuum leak -- 
check (thoroughly) the vacuum tubing (I believe it's for the egr) that runs
from the engine along the back firewall at the strut mount tower.  I suspect
it might have rubbed (from motor movement) a hole right through.  Should
also be apparent at idle.  run your finger along the back side (as if it has
a hole, it will typically not be in your line of sight.  Just a guess, of
course.

Ingo

----- Original Message ----- 
From: "Scott Simmons" <indischrot at gmail.com>
To: <v8 at audifans.com>
Sent: Tuesday, February 27, 2007 8:18 PM
Subject: [V8] 2 things


> Two odd things have occurred, curious as to their nature:
>
> 1) On occasion, after turning the ignition off, the oil pressure needle
> will hesitate, before moving over to the 5 and pegging there.  Turning
> on the ignition will bring it back to zero, where it shall stay after
> turning off again.  It does this randomly.  Next time the car's in the
> air I'll clean the pressure sensor terminals to ensure a good
> connection.  Gauge works perfectly during operation, I just think it
> might get confused when I turn off the car?  I don't want a pegged
> needle to draw current and drain the battery -- I know it's a resistance
> system, but what side-effects are there?
>
> 2) On occasion, when the radio's off, I can hear a turbo spooling under
> my hood.  A whistle sounds is faintly heard as the engine passes 2500.
> It sounds like it's coming from the center or passenger dash or,
> possibly, the engine compartment.  It follow rpm and not vehicle speed.
> Vacuum leak somewhere?  It's a very, very faint whistle and I only
> noticed it recently as I turned off the radio one night and haven't put
> it to any scientific testing (trying to get it to repeat on cold engine,
> hot engine, engine loads, etc).
>
> Not very big problems, just didn't know if anyone else has run into this
> before.
>
> ~Scott Simmons
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