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

[James Murray]

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.