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  1. J

    2002 Tahoe has a misfire at idle

    The fuel pressure is at between 50 and 55 when it's running. Hitting the the throttle makes it go up a little more. I have not cleaned the throttle body. It does have 2800,000 on it but it looks clean. I put Seafoam in it every other full tank.
  2. J

    2002 Tahoe has a misfire at idle

    No fuel comes out of the vacuum line.. I put my finger over the hole and I can feel a small suction while it is running
  3. J

    2002 Tahoe has a misfire at idle

    The misfire is so bad that it won't stay running after startup. The Tahoe was running great up until I stopped at a red light. Then all of a sudden it died. No signs of any problems. I have to put my foot on the throttle for it to start.
  4. J

    2002 Tahoe has a misfire at idle

    It doesn't have that ability and it has the factory cam in it
  5. J

    2002 Tahoe has a misfire at idle

    My scanner was only giving me a PO300. I've also done a fuel pressure test on it and when I hit the ignition it's at 58 pounds
  6. J

    2002 Tahoe has a misfire at idle

    My 2002 Tahoe misfires at idle. I've replaced everything from plugs, wires,coils, injectors, purge valve and MAP sensor. Nothing has changed. All it's giving me is a. misfire code. It's a inexpensive test but I can't spend a fortune trying to get this thing running
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