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New e30 owner! idle issue tho

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    New e30 owner! idle issue tho

    so just picked up my first e30 today!!! yes!!! its so clean other than a little paint here and there but mainly the roof. thing is... it is having an idle issue. Im sure some of you saw my post the other day with the craigslist ad, ill post pics soon! my buddies dad was talking about a cylinoid(butchered the spelling i know).

    Idle described:
    Seems to have a hard time finding its place, variable idle( up and down)
    Turned the a/c on and it died, turned the car back on with a/c off gave it some gas then turned a/c back on and it idled higher.
    Previous owner replaced a bunch of parts, The ad has been deleted tho so ill have to sort through all the records and receipts he left me.

    any thoughts as to what I should start with in the morning? Injected cleaner, check plugs?

    #2
    Vacuum leak,tps, icv
    89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...

    new build thread http://www.r3vlimited.com/board/showthread.php?t=317505

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      #3
      Still going down this path of a high idle myself. As soon as I think I got it nailed...I don't. Spend some time searching. There are a lot of threads out there and a few check lists. I'll have to try and dig up a link to one of the better ones, I only have hard copy handy.

      Vacuum leaks are the biggest problem. Then the Throttle Position Switch (TPS), Idle Control Valve (ICV) and the Idle Control Module (ICM) are typical culprits after the vacuum leaks are solved.

      Bottom line, no silver bullet. Address one issue at a time. These are 30 year old cars now and take patience, time and money to keep on the road. A bit of a cult car these days...welcome to the cult!
      2004 525i Manual - 1985 325E Coupe Manual

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        #4
        Probably the best explanation and trouble shooting summary I have found: http://www.verrill.com/car/e30_idlefaq.shtml
        2004 525i Manual - 1985 325E Coupe Manual

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          #5
          look up jlevies post on troubleshooting idle issues.

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