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Missing w/ speedometer jumping

Tiny
DWARREN
  • MEMBER
  • CHEVROLET LUMINA
97 Chev Lumina, 106K miles, 6 cyl auto. At highway speeds my car occasionally misses, sometimes so bad it shudders and the speedometer jumps up and down. One mechanic guessed oil pan gasket and manifold gasket ($1600), another suggests it may be a bad coil pack. Have you heard of these symptoms? Thanks for your expertise.
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Monday, November 19th, 2007 AT 11:14 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
When was the last major tune-up?

Does it have a check engine light On or has flashed if so you need to have the OBD2 read and comeback with the code/s.

For a start check the fuel pressure with a gauge.
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Monday, November 19th, 2007 AT 12:11 PM

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