1995 Chevrolet Lumina loss off power misfiring

Tiny
ELIJAHMARSHALLRESUME
  • MEMBER
  • 1995 CHEVROLET LUMINA
  • 3.1L
  • V6
  • FWD
  • AUTOMATIC
  • 104,000 MILES
It shakes I replaced the spark plugs which needed to replace on start up it there is a little shaking it the exhaust smells like alot of gas burning too much gas from incomplete combustion when I rev it I hear it misfire im wondering if it could be the coil pack or the spark wires or what else it could possibly be when driving very very slow acceleration doesnt change gears like its supposed to
Sunday, January 25th, 2015 AT 10:04 AM

5 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Scan for codes and check fuel pressure first auto parts rent gauge
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Sunday, January 25th, 2015 AT 10:07 AM
Tiny
ELIJAHMARSHALLRESUME
  • MEMBER
  • 4 POSTS
Can only scan 1996+
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Sunday, January 25th, 2015 AT 10:14 AM
Tiny
ELIJAHMARSHALLRESUME
  • MEMBER
  • 4 POSTS
Thats what they told me
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Sunday, January 25th, 2015 AT 10:15 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Then check for a vacuum leak, and compression. Check resistance of plug wire 5000 ohms per foot then check for spark if all that fails take to a pro as misfires are very hard to diagnose. It can be any sensor he should be able to scan as auto parts can't
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Sunday, January 25th, 2015 AT 10:50 AM
Tiny
ELIJAHMARSHALLRESUME
  • MEMBER
  • 4 POSTS
Thank you I meant to put backfire so ill probably start with a fuel pressure test
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Sunday, January 25th, 2015 AT 12:03 PM

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