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car wont go over 35-40 mph!!

Posted by darrinevans253, Jun 12, 2011
Newbie Forum - Beginner DSM modification questions and discussions. Common, repetitive, and general discussions will get dumped here from other tech forums. Unless you're a Probationary member you shouldn't post threads here.

  1. darrinevans253

    darrinevans253 Probationary Member

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    auburn, Washington
    How's it goin guys I just bought a 1990 plymouth laser (turbo)... I don't kno too much about turbos still learning about them... so it starts up fine smells like its burnin fuel little bit of black smoke. But when I drive it, it won't go anything over 35 to 45 and sounds like sh** and boggs and starts jerking but I can shift through all my gears... I can't figure it out for nothen ### help! Thx guys!

    And won't go over 3000 rpms
     
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  2. highlandgst

    highlandgst Proven Member

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    miller, Indiana
    boost leak... do a boost leak test
     
    #2
  3. luv2rallye

    luv2rallye DSM Wiseman

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    Minneapolis, Minnesota
    A fast check before doing a full BLT is check all your clamps on all the intake hoses.
     
    #3
  4. darrinevans253

    darrinevans253 Probationary Member

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    auburn, Washington
    Ya I checked them and all the hoses were good...
     
    #4
  5. miguelmcv

    miguelmcv Proven Member

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    Fresno, California
    Check your TPS.
    It could be your problem as well.
     
    #5
  6. Chaosweaver

    Chaosweaver Proven Member

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    South Jersey, New_Jersey
    The transistor (Ignition control module) will kill of cylinders if its bad, I had the same problem with my 2G and it ended up being a bad transistor.
     
    #6
  7. Infamous33

    Infamous33 Proven Member

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    Chicopee, Massachusetts
    You haven't given us much to go on here....
    Is the check engine light on? Here is a short list of possibilities:
    Bad MAF
    Bad spark plug/ignition wire
    Oil leaking into spark plug tube
    TPS
    Ignitor
    CAS
    Ignition timing

    I could go on for a while, but how bout starting with the basics. Does it seem to run real rough at idle? If so, start by checking your plugs and wires. If it misfires under a load, it could be the wire shorting to the head.
    Don't overthink a problem until the simple stuff has been checked. Get back to us with the findings.
     
    #7
  8. Boomdeeze

    Boomdeeze Proven Member

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    Independence, Minnesota
    I had a similar problem and it turned out to be a ton of boost leaks. Do a BLT and go from there, cheapest and easiest fix.
     
    #8
  9. motozachl

    motozachl Proven Member

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    Cleveland, Ohio
    +1 million
     
    #9
  10. gufi

    gufi Proven Member

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    Chula Vista, California
    i had a parts car that i had to drive home that was sortof like this, the turbo was seized.

    check that also, just pop off the intake and see if it spins freely
     
    #10
  11. niddydsm

    niddydsm Proven Member

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    Thornton, Colorado
    my 94 sat for 11 months and when i started it up it did the same thing... My problem was wouldnt go past 3k would just bog down at it.. turned out to be ECU leaking
     
    #11
  12. GettinPaper

    GettinPaper Proven Member

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    Battle Ground, Washington
    I had the same problem with my 91 talon awd turbo when i first bought it..
    It would not go past 4grand whatsoever shifting normal or when i get on it..
    Swapped the ecu with an eprom and everythings cool now ;)
    Spooling hard to redline.
     
    #12
  13. 92turbotalonpink

    92turbotalonpink Probationary Member

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    kalispell, Montana
    well I have a 92 talon that someone started to pull apart, I got the car on trade, put it back together and looks like I missing a few things like iac, and thermol valve, now should I be able to rotate the blow off arm, dose anyone have a iac or thermol valve. also my car runs fine but just will not go over 25 revs fine I need help Kalispell mt if there is someone out there that can help me406-755- 3330 please call It would be better for me thanks
     
    #13

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