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Prev Professional Automotive Repair Technical Discussions for May 28, 2012
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2002 Ford Focus SE 2.0L Poor Idle Quality, Cuts out, Stall, Misfire
replaced the crank sensor no change , sprayed brake clean around intake manifold and found a evap. hoses on back of intake plenum that had blown off when it got wet and back fired , thanks for the help.
2004 Ford F-150 FX4 5.4L MIL Lamp on VIN: 1FTPW14514
After many hours of testing I finally found it when I introduced a vacuum leak to force it lean to make sure pcm would respond properly. I disconnected pcv, it went very lean, then I pluged it and ran it, the trim went from -20 at idle to -5. The pcv system wa... Trouble codes: P0172, P0175.
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