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2008 mazda tribute, p0305. changed coil and plug for cyl. 5 still has misfire, can hear backfire noise in intake. no vacuum leak,wiring to coil ok. fuel press ok. egr system ok. no other codes. only makes backfire noise at idle. any ideas.
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Aug 14, 2012 - MIL on; cylinder 5 misfire; most noticeable at idle in gear ... This could be caused by an EGR valve that is sticking partly open and not closing ...
repairpal.com > ... > Grand Caravan > 2008 Dodge Grand Caravan
Feb 22, 2011 - ... do something with a misfire in the #5 cylinder of my V6 4.0L engine. ... ODB Code P0305- Misfire in #5 Cylinder on 2008 Dodge Grand Caravan .... My2005 dodge grand caravan jerks when it shifts into gear what could it be.
If you had code P0305, I don't know why they would have done anything to the #2 cylinder but if they have already replaced the plugs, wires and injector; here are a few more items to check:
1) Check connections from ECM. Look for any corrosions or bent/broken pins.
2) Check the fuel line pressure
3) Check the engine compression
4) And if the above are good, then you will probably have a defective ECM
sounds like the only thing left is the valve lash. If the intake gasket was bad, it would most likely cause a vacuum leak and effect the overall performance of the engine. You may also notice some oil consumption as well. Also, verify the firing order is correct.
this code refers to a miss fire on cylinder 5.it could be spark plug,plug wire,injector,coil driver for that cylinder.start with the easiest,it may fix it.change all plugs if its a plug problem,same with the wires.
Did you resolve the other codes? p0300 random multiple misfire, p0305 misfire cyl #5, p0307 misfire cyl #7? You could have bad ignition coils or a vacuum leak. Check your coils and check for vacuum leaks at the intake manifold check vacuum hoses. Hope this helps!
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