My Taurus occasionally idles rough or misfires when driving or sitting still. The check engine light is not on. I used dry gas and the problem seemed to clear up. After a few more tanks of gas the problem returned. I then used Gum Out total gas system cleaner thinking a fuel injector may be clogged. This also seemed to help, however, the intermittant misfires or idle jumps returned. I have tried other gas stations and higher octane, however, the problem still occurs. The Ford dealership placed the car on their diagostic computer and everything checked out ok with no error codes. The transmission is ok. The spark plugs and wires were replaced at 90,000 miles. The Ford serviceman said to bring the car back when the problem gets worse. He said possibly I may have a wiring problem or short circuit somewhere. Please let me know your opinion. Thanks.
have the same problem?
Sunday, October 21st, 2007 AT 2:56 PM