Tuesday, October 25th, 2011 AT 1:07 PM
DEP502
- MEMBER
- 1997 MERCURY MARQUIS
- 180,000 MILES
Has new crank sensor
Mercry Marquis cranks well runs very rough for 5 minutes, will not go over 15mph, sputters, then runs ok
1 Reply
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-
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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Wednesday, October 26th, 2011 AT 4:41 AM
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