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Hard time starting from cold starts

Posted by crazyquik22023, Jun 27, 2011

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  1. crazyquik22023

    crazyquik22023 Proven Member

    610
    5
    Joined Sep 14, 2008
    Akron, Ohio
    I finally have my car running pretty damn good. The only problem I am having is it has a hard time starting on cold starts. Only has problems on cold starts. Hot starts it will start and hold idle instantly. On cold starts it will start go to about 1500 rpms then drop to like 700 rpms and die. I have to give it has and hold it at about 1500 rpms for maybe 20 seconds then it will hold idle (1000 rpms) really good. Car drives really good, holds idle good, etc. Almost all parts are very new that would effect this. Fuel pump, fuel filter, FPR, all have less than 5000 miles on them. No boost leaks either. All sensors etc are all good. Motor has less than 500 miles on it and all sensors were checked or replaced and installed by Buschur. I am thinking it is a tuning issue. I can post a log of me trying to start it if needed. Just wondering if anybody has any ideas.
     

    850  0

    1998 Mitsubishi Eclipse GST
    12.900 @ 115.000 · 2G DSM
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  2. deviousgst

    deviousgst Proven Member

    446
    1
    Joined Mar 24, 2008
    bakersfield, California
    I had same problem as you after installing my tranny and head. I guess when I was installing the tranny , as I was on top picking it up and guiding it in I accidently pulled on harness(were Coolent temp sensors ect) are and the two wires that go into the coolent temp plug, one of them had broke off. For like a week I had cold start issues, and like you I had to hold it up at high idle till it warms up..it took me a week to notice that wire had came off. So maybe check that

    Sent from my DROIDX using Tapatalk
     

    834  9

    1997 Mitsubishi Eclipse GST
    awd · manual · 2G DSM
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    VTEC_THIS likes this.
  3. VTEC_THIS

    VTEC_THIS Proven Member

    792
    19
    Joined Jul 20, 2006
    Tampa, Florida
    Good answer, I was thinking the same exact thing. A bad coolant temperature sensor (or one that's not connected) will cause the car to run roughly on initial start ups.
     

    2K  0

    1995 Eagle Talon TSi AWD
    manual · 2G DSM
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  4. crazyquik22023

    crazyquik22023 Proven Member

    610
    5
    Joined Sep 14, 2008
    Akron, Ohio
    Ok I'll check out the coolant temp sensor. Prob not the issue but could be I'll check it out and post back.
     

    850  0

    1998 Mitsubishi Eclipse GST
    12.900 @ 115.000 · 2G DSM
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  5. crazyquik22023

    crazyquik22023 Proven Member

    610
    5
    Joined Sep 14, 2008
    Akron, Ohio
    I don't think the problem is the coolant temp sensor. It reads close to the outside temp before I start the car via dsmlink. Any other ideas? Did a boost leak test again and again and I couldn't find one leak. I am changing my throttle cable today b/c the old on is kind of sticking a little but I doubt that has anything to do with the hard starts.
     

    850  0

    1998 Mitsubishi Eclipse GST
    12.900 @ 115.000 · 2G DSM
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  6. turboglenn

    turboglenn Proven Member

    5,400
    98
    Joined Nov 5, 2007
    RIpley, West Virginia
    Bad isc?
     
  7. crazyquik22023

    crazyquik22023 Proven Member

    610
    5
    Joined Sep 14, 2008
    Akron, Ohio
    Nope, ISC tested good. .28-.30 resistance in all coils and motor functions normally also.... Should have posted that already. :banghead:
     

    850  0

    1998 Mitsubishi Eclipse GST
    12.900 @ 115.000 · 2G DSM
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