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Tiny
JOKER95
  • MEMBER
  • 1995 BUICK RIVIERA
  • 6 CYL
  • FWD
  • AUTOMATIC
I have a 95 buick riviera 3800 fi the problem im having is when im driving about 40-50 mph it starts to miss fire and when I get off the gas and get back on it soft it doesnt do it it only happens when I have a load on the on the motor not at idle and the check engine light is on and I already put thecomputers on it and no codes come up at all the motor has 110 thousand miles on it and up till now no problems with it
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Sunday, May 8th, 2011 AT 4:10 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
https://www.2carpros.com/articles/engine-misfires-or-runs-rough

1.Defective spark plugs
2.Inadequate spark/coil,defective spark plug wire.
3.Lack of compression
4.False air leakage.
5.Faulty fuel injectors.
6.Insufficient fuel pressure.
7.Contaminated fuel.
8.EGR valve that is leaking.
9.Oxygen sensors.
10.Throttle position sensor.
11.Manifold absolute pressure sensor
12.Mass Airflow Sensor
13.Idle air control valve

Note: If it doesn't apply disregard it-
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Sunday, May 8th, 2011 AT 8:18 AM

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