2000 Honda Civic Got Motor Put Idles 1 Grand Drops 500rpm Over Again Also

2000 HONDA CIVIC
80 MILES
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my honda got a motor put in it and it idles up to 1 grand and drops to 500rpm over and over again, also i started driving it and it lost all power when applying the gas more then a 2 cm the car would stat backfiring like crazy and would have no power
Jan 15, 2013 at 5:46 PM
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RASMATAZ
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Check the idle air control valve and the fuel pressure-start here
Jan 15, 2013 at 10:36 PM
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