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OBDII Code 0305

Tiny
17DVLDOG75
  • MEMBER
  • JEEP CHEROKEE
I have a 1999 Jeep Cherokee Sport Classic with a 4.0L with 180, 00 miles. My problem is that cylinder 5 is misfiring (OBDII Code 0305); I've replaced the plugs, wires, rotor and distributor cap. There is still a slight stuttering between 50 and 65 mph and the check engine light flashes occasionally. Is there something else I can try?
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Friday, April 6th, 2007 AT 9:55 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
If a misfire in a specific cylinder should lead you to check the spark plug, fuel injector and compression

Here's more on misfires:

Misfires can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.

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Saturday, April 7th, 2007 AT 6:07 PM

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