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Discussion Starter #1
I have an 01' RS (with 102k on enginne) and my fiance told me it was acting up a few weeks ago. So I took it for a drive and (btw it's an auto) it was running so wierd.

I'd push the gas down and the engine would make the sound like it was about to take off and then it would downshift and then it will start to slow down. Totally bogging and hesitating. If left to idle for more than 30 seconds it starts to buck and the idle will jerk around. If you try to accel from a stop, the car will just not accellerate.


Things i've changed:
fuel filter
air filter
spark plugs

Things i've inspected:
plug wires (look perfect)


Things I think i've narrowed it down to:
Front o2 sensor
Coil

Basically I could use some of your guys help, comments, just tell me what you think and how I can fix this car, it's almost not driveable.


Thanks Guys
 

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Steel Grey WRX Limited
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if the cat were bad then you would be getting a CEL for sure. i'd say you have an o2 sensor problem. take it to the dealership and have them run a scan on the car. sometimes they can see problems that dont bring up a check engine light. for instance they can see duty cycles for injectors and timing to determine how the car is running.

i'm willing to be its a front o2 sensor problem.
 
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