Engine missing

1999 OLDSMOBILE 88
114,000 MILES • 3.8L • V6 • 2WD • AUTOMATIC
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RONALD FRANKLIN
  • MEMBER
  • 14 POSTS
I am back again. sorry. well I did a major tune-up including all three coils about eight months ago. I replaced also I think it is called the EGR. today I replaced the air filter, MAS, both o2 exhaust sensors. still getting the random misfire code. it runs very rich. could it be a bad injector? any help would be greatly appreciated. thanks
Sep 4, 2017 at 5:31 PM
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HARRY P
  • ✓ASE Certified Mechanic
  • 2,292 POSTS
  • ASE Certified Mechanic
What spark plugs and wires did you use? These cars have a fairly strong spark coming out of the coil that seems to wear out off-brand plugs and wires quickly. OEM stuff does pretty well. Everything else I have tried in them starts to fail within about six months.
Sep 4, 2017 at 7:40 PM
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