TheCorkans Posted July 22, 2005 Share Posted July 22, 2005 Hey everybody, great to join! This is our first post! Our 2001 Outback, 4 cylinder, has been very erratic. The pedal is unresponsive at times, and at other times the engine surges. Driving is very unpleasant at any speed and gear. Shifting to Neutral does not effect the engine surging. Using our Digimoto reader I got the following code: Category=Powertrain Name=P0172 Description=Fuel Trim too Rich (Bank 1) The TPS and O2 sensor are reading correctly. I have replaced the ignition coil pack and had the plugs and wires replaced. I have also run fuel injection cleaner and water removal additive in the last 4 tanks and no improvement. Now I am considering the fuel pump, fuel filter, fuel pressure regulator... Any advice is greatly appreciated! Cheers! Quote Link to comment Share on other sites More sharing options...
Legacy777 Posted July 24, 2005 Share Posted July 24, 2005 automatic or manual tranny? I'd do the fuel filter. It sounds more electrical then mechanical, and the pump and regulator usually don't fail Quote Link to comment Share on other sites More sharing options...
Eikari Posted July 24, 2005 Share Posted July 24, 2005 Check the tightness of the spark plugs. Quote Link to comment Share on other sites More sharing options...
Cougar Posted July 25, 2005 Share Posted July 25, 2005 Maybe there is something going on with the air intake system. Quote Link to comment Share on other sites More sharing options...
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