Question about 2008 Dodge Durango

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Engine misfire Engine is misfiring. Checked code and #4 cylinder is the source. Replaced coil and p;ug. Still misfiring

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  • Willie Lee Jan 30, 2013

    Changed ignition coil and check engine light cleared. Came back after about 25 miles. Cleared by itself after about 100 miles of driving and no more issues so far. Thanks for all the input!

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  • 25 Answers

You could have an injector problem at the #4 cyl. It could be leaking, clogged, or not opening at all. The PCM controls the injectors, I would make sure you have power to it. You should unplug the injectors and use an injector test light to determine if you are getting power to it. You would need to crank the engine and see if the injector flashes, if it does - then you are getting power to it; if not, then I would further inspect the PCM. Also, make sure you set the spark plug gap correctly.

I hope I was able to help you out.

Scott
ASE Certified Automotive Technician
ASE Certified MED/HVY Truck Technician

Posted on Jan 22, 2013

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SOURCE: 2004 Neon SXT cylinder misfire

TRY REPLACING THE CRANKSHAFT POSITION SENSOR..HAVE SEEN THESE CAUSE MISFIRES AND LOW VOLTAGE DTCS AS PCM THINKS VEHICLE IS NOT RUNNING..ALTERNATOR MAY NOT BE PUTTING OUT PROPERLY

Posted on Jul 07, 2009

Molson02536
  • 3854 Answers

SOURCE: Check engine light

A multi misfire may mean that one or more of the following has happened:
Faulty spark plug or wires, Faulty coil (pack), Faulty oxygen sensor(s), Faulty fuel injector(s), Stuck/blocked EGR valve / passages, Faulty camshaft position sensor, Defective computer.

The engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wire, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the the problems were faulty fuel injectors. 

Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or unmetered air getting past the airflow sensor, or an EGR valve that is stuck open.

Good luck and hope this information helps, keep me posted, be glad to help you get the truck running 100% again. Not sure if your running a K&N air filter, and if you are there may be a flim of oil on the MAF sensor that is making you run lean. You may want to spray down the MAF sensor with a can of MAF cleaner. 

Posted on Jul 02, 2009

  • 19 Answers

SOURCE: Engine skipping

well i had a 98 dodge neon that seems like it did the same and it said engine misfire and all i did was due a tune up change spark plugs and wires.

Posted on May 21, 2009

wracefans24
  • 1985 Answers

SOURCE: 01 dodge dekota 4.7L misfire on cylinder one only

depending on what kind of of scanner you used for codes,
cylinder #5,doesn't always mean cylinder #5,
it sometimes means the fifth cylinder in the firing order.
Chrysler's DRB scanner would give us the exact cylinder,
if you connect your scanner again see if you can watch the misfire counts happening,if you can pull a wire of off a different cylinder and see what cylinder the scanner calls it.

Posted on Dec 19, 2009

SOURCE: 99 dodge caravan #4 cylinder misfires, i replaced

This is a known dodge issue replce the injector!!!!! done deal

Posted on May 07, 2010

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=========

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For your trouble shooting I suggest you to refer the help oinks below. It has step by step details for many engine misfire issues.

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Click the link below:-----


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http://whoisbyme.blogspot.in/2012/06/ford-explorer-cylinder-misfire.html

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http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html

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This will help.

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This will help.

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This will help.

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