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ms4 help

This is a discussion on ms4 help within the Internal Engine forums, part of the LSx Technical Help Section category; Recently put a ms4 cam on my 98 ls1 but my tps sensor keeps going out and my engine turns ...

  1. #1
    Junior Member
    Join Date
    Oct 2011
    redwood city

    ms4 help

    Recently put a ms4 cam on my 98 ls1 but my tps sensor keeps going out and my engine turns off sometimes mostly when on reverse. I have stock heads, manifold, headers and exhaust. Other mods I did where ls2 timing chain, hardened pushrods, ls6 ported oil pump, double springs, ls7 lifters, 3600-3800 stall, k&n induction and transmission cooler and had it tuned but still not running right. Does anyone have an idea why?

  2. #2
    Member c5z28's Avatar
    Join Date
    Apr 2008
    Bay Area

    On your ass flashing
    my highbeams

    How does it idle/drive? Had a friend who ran a basic (poor tune) in his car with a cammed and stalled auto that would die in parking lots but once on the move it drove fine.That car must be choked up with an ls-1 intake and stock exhaust manifolds, not a good combo. Was your tuner known for specializing in these cars? You may have to find another tuner.

  3. #3
    Member WS6SP33D's Avatar
    Join Date
    Nov 2011
    QuarterMile, KY

    Red w/ silver Stripes
    2000 WS6 6 Speed

    ^^ Well said. running a stock ls1 instake, heads, manifolds don't allow much breathing room for a cam in that size in the first place. Also if you didn't already have a pro tune you will need one right away.

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