[s-cars] Rough running - need advice what to try next?

[James Murray]

Ah... There we go ;-) not sure why my original mail failed to get
posted?

Anyway, as soon as the car warms up she starts running rough, I tried
testing the O2 sensor last night, seemed to give okay voltage
measurements, but I have to try again when the engine is hot. What could
be heat sensitive when the engine warms up to cause this... 

/J.

-----Original Message-----
From: s-car-list-bounces at audifans.com
[mailto:s-car-list-bounces at audifans.com] On Behalf Of James Murray
Sent: Tuesday, September 25, 2007 11:27 AM
To: Scar
Subject: Re: [s-cars] Rough running - need advice what to try next?


Is my email getting through? I see nothing posted...

/J
> _____________________________________________ 
> From: 	James Murray  
> Sent:	Monday, September 24, 2007 3:09 PM
> To:	s-car-list at audifans.com
> Subject:	Rough running - need advice what to try next?
> 
> List advice needed....
> 
> Patient: 93 UrS4
> 
> Symptoms: Once warmed up, car runs rough, loss of power (hesistation 
> and slight bucking on acceleration), as if running with one less 
> cylinder or not getting fuel...no check engine light illuminated (but 
> have not pulled codes yet). Car seems fine when first cold, starting 
> up.
> 
> Procedures attempted: Swapped out coil pack, Spark Plugs, and WGFV (no

> appreciable difference). Have tried pulling injector connectors on 
> each cylinder, just makes it worse at idle.
> 
> Next on the list of potential items to check:
> 
> 1. Oxygen Sensor
> 2. Knock Sensors
> 3. POS Device
> 4. Fuel pump
> 5. Injectors
> 6. MAF
> 
> My number 1 candidate right now is the Oxygen Sensor... what is the 
> list advice?
> 
> Cheers, /Jamu.
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