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1999 Chevy Lumina

Tiny
2CP-ARCHIVES
  • MEMBER
  • 1999 CHEVROLET LUMINA
  • 6 CYL
  • 2WD
  • AUTOMATIC
1999 Chevy Lumina 3.1 liter mileage: 55,000. What is causing the intermittent engine miss I get driving at highway speeds? My mechanic cannot find the problem. I have replaced spark plugs and wires, CO2 and temperature modules to no avail. During a 100-mile trip, it may not miss at all or it could miss sporadically several times. The misses may last 10 seconds or continue for several miles. The check engine light has never come on. It was put on a scanner and there were no trouble codes. Thank you for any help you may have.
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Wednesday, January 12th, 2011 AT 8:31 PM

1 Reply

Tiny
2CP-ARCHIVES
  • MEMBER
  • 4,540 POSTS
Check the fuel pump for pressure and volume. You possibly may have a faulty fuel injector. In your question, you commented that it was put on a scanner and there were no trouble codes. If you did not use an OBDII scanner, you may have missed important information that would have isolated your problem.
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Wednesday, January 12th, 2011 AT 8:32 PM

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