TPS spring loaded?

Discussion in 'General Chevy & GM Tech Questions' started by KidHauler, May 12, 2012.

  1. KidHauler

    KidHauler Epic Member 5+ Years 500 Posts

    Is the throttle position sensor spring loaded, or just an electrical range sensor? The high idle issue is back in the '99, and I was told to check to see if the spring actuates. It didn't. I haven't had time to get into the shop to check for codes or meter readings - just trying to build my case before I get there.
    The tranny is hunting a bit, and both mufflers are blown out at the welds, so maybe a vacuum leak or no back pressure... I don't know.

    All help appreciated.
  2. tbplus10

    tbplus10 Epic Member Staff Member 5+ Years 5000 Posts Platinum Contributor

    I always thought the TPS was an electrical range sensor.
    Idle will creep up a little with blown mufflers, no back pressure less force required to push the air through.
    Hunting trans though isnt something you see with blown mufflers normally.
  3. osgprometheus

    osgprometheus Rockstar 100 Posts

    Not sure about the sensor man. Sorry.
  4. dipstick

    dipstick Member 2 Years 100 Posts

    You need to check the tps voltage .55 volts at closed throttle. At wot 4.50 volts ,and should get a good even voltage rise with no fluctuations
    When opening throttle to wot. Also a bad tps will make trans erratic. You need to scan it see if any codes set.
    I would also clean the maf sensor .

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