Unstable RPM and Voltage at start up
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Cadillac Escalade, EXT and ESV Forum - 1999 - 2006 Discussion, Unstable RPM and Voltage at start up in Cadillac Escalade Forums; When I start the truck, my RPM surges as well as my voltage gauge. What could be causing this? It's ...
  1. #1
    kaiseresko is offline Cadillac Owners Member
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    Unstable RPM and Voltage at start up

    When I start the truck, my RPM surges as well as my voltage gauge. What could be causing this? It's not transmission because it will do it in any gear. Bad ground? Alternator?

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  3. #2
    the cadillac man's Avatar
    the cadillac man is offline Cadillac Owners Master
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    Quote Originally Posted by kaiseresko
    When I start the truck, my RPM surges as well as my voltage gauge. What could be causing this? It's not transmission because it will do it in any gear. Bad ground? Alternator?
    If its just the needles then its most likely the stepper motors failing

  4. #3
    kaiseresko is offline Cadillac Owners Member
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    Re: Unstable RPM and Voltage at start up

    Not just the needles because the truck surges, I can hear it struggling. The truck lurches forward too.

  5. #4
    the cadillac man's Avatar
    the cadillac man is offline Cadillac Owners Master
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    Quote Originally Posted by kaiseresko
    Not just the needles because the truck surges, I can hear it struggling. The truck lurches forward too.
    Clean the throttle body

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