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Still Problem With Fast Idle after Warmup 200 1985

posted by  dobber13 on  Wed Jul 22 15:30 CST 2009
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last visit: Sat Oct 18 19:10 CST 2014
[RELATED]

Still the same problem with fast idle from 1000 rpm to 1200 rpm.Tried changing out air control valve but same high idle.Cut off air into intake manifold idle went down.Tested the acv by connecting a jumper to terminals 5 and 2 and the rpm's went up between 1600-2400 rrpm's so that's ok.Also reset base idle and idle and throttle switch and cleaned all the connectors. So what else could be causing the high idle? When cold startup it idles between 850 and 900rpm's.Also sometimes it will idle at normal speed but not often and if I shut the engine off and restart drive a short distance the idle when stopped will go back up.Any idea's? Charlie 85 240ti B21ft








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    Still Problem With Fast Idle after Warmup 200 1985

    posted by  transit wind on  Wed Jul 22 15:56 CST 2009
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    last visit: Fri Aug 15 22:40 CST 2014
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    At the moment my niece's 90 244 will idle high in park. When I unplug the AMM it goes back to a normal idle. Of coarse I turn off the car/ignition completely before unhooking and hooking it back up. Try another AMM.








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      Still Problem With Fast Idle after Warmup 200 1985

      posted by  dobber13 on  Wed Jul 22 16:23 CST 2009
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      last visit: Sat Oct 18 19:10 CST 2014
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      Thanks transit wind but I don't have a AMM.








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        Still Problem With Fast Idle after Warmup 200 1985

        posted by  hardknocks! on  Wed Jul 22 22:15 CST 2009
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        last visit: Sun Oct 12 06:42 CST 2014
        [RELATED]

        hello
        had this problem and took forever to find/correct.
        i had to rewire all the wires going through the firewall to the idle computer/module.
        it plugs into the engine wiring harness passenger side near firewall.
        others have had this problem also.
        take a look at them wires.
        good luck
        Mike







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