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Intermittent misfire vq30de?

Tiny
DALEWHITT3
  • MEMBER
  • 1995 INFINITI I30
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 150,000 MILES
I have a 1995 infiniti I30/nissan maxima with a vq30de engine. Well the car started to have a intermittent misfire. No CEL (check engine light) would come when this happens. It only happens when the car is warmed up and driving for a while.I have changed my spark plugs but that didnt do the trick. When the car does misfire I check the diagnose mode on the ecu and it flashes a 0201 code - engine circuit code. But doesnt give me the exact cylinder. Could this be a faulty coil plug?
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Monday, July 18th, 2011 AT 11:52 PM

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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Tuesday, July 19th, 2011 AT 12:33 AM

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