Thread: engine idle rough, acceleration bad

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  1. #1 Re: engine idle rough, acceleration bad 
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    The rear O2 sensor is still there. Yeah I really do need to take it to Autozone and have it read for codes. Didn't know that if the SES light flashed it meant the engine would shut off immedieately. Thanks.
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  2. #2 Re: engine idle rough, acceleration bad 
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    Err rather flashing SES light means driver shut the car off immediately. Anyway took it to O'Reilly's and scanned for codes. P0102 was the only one that came up. Disconnected the MAF sensor, no change, same code.
    It's now at the shop, they said their scanner/diagnostic computer will help find the problem in more detail.
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  3. #3 Re: engine idle rough, acceleration bad 
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    And yeah I think Bio's right about it pouring fuel into the cylinders. Slight fuel odor and economy is bad since this started happening too. The main mechanic/shop owner who is a family friend of my wife's said the cat should really be there because some back-pressure is necessary, but it was definitely bad. His assistant who asked me if the muffler is still there (yes) says that will provide some back-pressure itself.

    But obviously others have removed the cat and haven't had any problems
    A little confused - but still learning. And yeah I know to read the FAQ's/help sections, etc. to find out more.
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