93 3.3 Dodge

SMK

MEMBER
1993 DODGE CARAVAN

Van misses after 2X in park or drive. Starts up and runs fine.I thought I had bad Gas tried to run the gas out blew my muffler. Had that changed had shop check for plugged up Cat. Was ok. No codes Changed Fuel filter plugs and wires no change changed coil pac no change Re did fuel pressure test a bit low so I changed the fuel pump still running bad, Did a vac test to reverify exhaust ok. Went to salvage yard got used MAP sensors ( had no choice ) still same problem, I would appreciate any help you can offer

Wednesday, November 17th, 2010 AT 2:37 PM

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

Engine running rough or misfiring can be cause by the following:

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

1.Defective spark plug
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

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Wednesday, November 17th, 2010 AT 2:41 PM