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2002 Ford Focus idle

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  • June 19, 2013 at 11:14 pm #527909
    MichaelMichael
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      My focus is idling a bit rough when warmed up. It makes an intermittent rumble inside (vibrates the steering wheel and everything) it only does it for a second them stops and repeats. This only happens when the idle drops to 750 after the car is at running temperature. I cleaned my throttle body, changed my air filter and changed my spark plugs. My valve cover gasket was leaking oil into the spark plugs so that was replaced too. Is there anything else that may cause this problem??

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    • June 20, 2013 at 12:51 am #527921
      DarkoDarko
      Participant

        it easily can be a problem with vacuum leak or (if not fly bu wire system) idle air control valve…

        June 20, 2013 at 2:21 am #527944
        BillBill
        Participant

          Those cars are bad for front engine mounts failing. (pass side of engine)The mount gets weak and can cause a bad vibration while idleing especially in gear. I take a piece of 2×4 and place it on a floor jack and roll it under the oil pan. Jack the engine up very slightly. Start the engine and see if the vibration has changed. If so the mount is weak.

          June 20, 2013 at 2:53 am #527948
          MichaelMichael
          Participant

            Mount was changed 10k km ago. also id like to add, I pulled out the MAF sensor and cleaned it, it was really dirty. and I’m still having this issue. I took a closer look at my RPMs while it was warmed up. It seems to be idling at 750 and dropping ever so slightly every time I feel the rumble.

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