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  1. 9

    99 Tahoe..RPMs drop when I go over bumps

    It's now at another shop......let see if they can figure it out !
  2. 9

    Engine misfires

    I have the same problem......When I go to work, it's a long hill to climb and it does what you described !
  3. 9

    99 Tahoe..RPMs drop when I go over bumps

    Ok....thanks for your help. The 2 shops did try to look over all the wires.....I have new spark plug wire sets.....I have to up them in and see if it gets fixed. I hope someone some one can help me, who knows about this problem !
  4. 9

    99 Tahoe..RPMs drop when I go over bumps

    OK guys...Please help ! When I drive over bumps the Tahoe's RPMs drop and you feel a jerk. The RPMs do go right back up. I could be doing 70MPH and let say I hit a bump....the RPMs will drop from 2500 to like a 1000 and go right back to 2500. The worst is when you go over railraoad...
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