npapz34 |
07-10-2019 05:43 PM |
Rough Idle/Stumbling Acceleration
Girlfriend's 2003 S40 1.9T with 82K, I'm getting a misfire at idle and a slight stumble on acceleration. I now have these codes : P0403 and P0442. The gas cap was replaced recently. I had a P0172 but that was fixed with a new MAS and an exhaust purge valve. I changed the spark plugs (NGK iridiums)and cleaned the throttle body when I serviced it last. I'm not getting any misfire codes. Does anybody have an idea of what I'm missing? I'm new to Volvos. Thank you in advance!
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