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ms2pnp low rpm idle when fully warm, stalls sometimes

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    ms2pnp low rpm idle when fully warm, stalls sometimes

    How do I increase the rpm when it reaches operating temp?

    It idles good when warming up but once it hits operating temp it will usually die at stop signs/lights. sometimes it wont, im guessing due too ambient temps.

    Last time I messed with the tune(probably close to a year ago) i thought there was a setting to change the rpm, but am I wrong? Is it just ignition advance and fueling?

    It idles at abour 12.6-13 afr, but the rpm is around 500, fluctuates slightly around 560-450ish(dies when it hits around 450.

    Pretty sure it used to idle around 800-900 rpm. I checked for vacuum leaks, fixed 1 and no more leaks but didn't help.

    I have an msq i can give if anybody wants to take a look. Can't upload it as it's not a supported file.

    Any help would be greatly appreciated. thanks guys.
    89 325i: 86 535i motor+trans, JE forged pistons, MLS head gasket, ARP head studs, Comp turbo, GoodNTight b34 turbo manifold, e30.de motor mounts, AKG 75D engine/trans mounts, custom 3" exhaust, intercooler, MS2PNP, Megan Racing Coilovers.

    #2
    You need to go to your idle settings and adjust your idle control valve settings. The last point in the curve sets your warm IAC PWM target. You should also not need to run that rich to get it to idle. Mine idles at 850rpm fine at 14.5.

    Double check that your fuel and spark make sense. I also suggest you setup the car to idle warm and then worry about tuning in the warmup cycle.

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      #3
      ...random double post...

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        #4
        Thanks for the assistance.

        I'm gonna bring it over to a shop later in the months and just have them do a full tune in it. Should fix some of the rich/lean spots and get the idle good.
        89 325i: 86 535i motor+trans, JE forged pistons, MLS head gasket, ARP head studs, Comp turbo, GoodNTight b34 turbo manifold, e30.de motor mounts, AKG 75D engine/trans mounts, custom 3" exhaust, intercooler, MS2PNP, Megan Racing Coilovers.

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