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what would cause

Discussion in 'The Garage' started by K5Greek, Jun 22, 2006.

  1. K5Greek

    K5Greek 1/2 ton status

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    Location:
    Vineland, NJ
    and engine to rev high by itself? also when its reving high the truck downshifts late. like if im slowing down at a stop sign itll downshift at around 5mph...as soon as i turn it off then back up its gone, but this is like the third time its happend to me now. i can tell its reving high too becuase when i pull out of driveway, i dont need to give it any throttle and itll go and shift into 2nd
     
  2. southernspeed

    southernspeed 1/2 ton status GMOTM Winner

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    Something fouling the throttle linkage. Dirt in the TB causing the butterfly to hang open. Sticking throttle cable. really bad air leak.
    Just a few ideas.
     
  3. vortec

    vortec 1/2 ton status

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    i'd start by looking for vacuum leaks.
     

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