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2002 Ford Focus - Idles rough. Okay when driving and at start up. Have replaced spark plugs/wires, air sensor. Diagnostic computer displaying no issues.

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  • bennyboy2862 Aug 12, 2008

    Couple of codes came on - shop said one was related to vacuum hoses and the other ewas #3 MISFIRING. cHANGED THE PLUG AND WIRE, AND IT LOOKED LIKE IT WAS FIXED. cOUPLE WEEKS LATER - CHECK ENGINE RLIGHT BACK ON - IDLES ROUGH AND TRIES TO DIE OFTEN. CLEANED OUT FUEL TANK AND LINES, ADDED FUEL TREATMENT AND PREMIUM GAS. AGAIN ABOUT 2 WEEKS LATER - SAME ROUGH IDLE AND TRYING TO DIE PROBLEM - CHECK ENGINE LIGHT BACK ON-ANY SUGGESTIONS?

  • rick_antonis Aug 14, 2008

    I have somewhat the same problem. On hot days the car will run good but when I come to a stop and turn the car off it restarts but will not idle and will only stay running as long as I give it gas. If I let the car cool down for 15 to 20 min it starts and runs good. This happend on hot days and only once ro twice a month.



    HELP this has been a very good car for me. 2001 focus ZX3



    I have had it it the shop a few times they are unablr to fix it



    Rick

  • Anonymous Apr 01, 2014

    Replaced spark plugs and leads any ideas Thanks.. It's a 2002 model wasn't in the year column

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Vac elbow had small crack in it - replaced the elbow and the car runs great

Posted on Aug 13, 2008

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