help problems with my car

130,000 MILES • AUTOMATIC
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BRANDINICOLE87
  • MEMBER
  • 1 POST
my 99 mercury cougar is slipping when i pus the gas sometimes not all the time what is wrong
Jul 31, 2011 at 9:37 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 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-
Sep 22, 2011 at 1:23 AM
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