[s-cars] Rough running - need advice what to try next?
james.murray at ericsson.com
Tue Sep 25 08:27:04 PDT 2007
Is my email getting through? I see nothing posted...
> 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
> 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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