Serious misfire and high pressure.
Thread Starter
Senior Member
Joined: Dec 2010
Posts: 848
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From: Pittsburgh, PA
Year: 2000
Model: Cherokee
Engine: 4.0 I6
Serious misfire and high pressure.
The other day I noticed my oil pressure jump to 80. After looking a few things up I thought it was just a bad sensor.
Today however, I went to drive and my Jeep and an insanely rough idle and was misfiring so bad I had a blinking CEL. I have had a misfire for 8 months now but I thought I solved it with the heat soak issue.
Any ideas on what's wrong?
Thanks,
Jon
Today however, I went to drive and my Jeep and an insanely rough idle and was misfiring so bad I had a blinking CEL. I have had a misfire for 8 months now but I thought I solved it with the heat soak issue.
Any ideas on what's wrong?
Thanks,
Jon
CF Veteran
Joined: Jun 2011
Posts: 2,460
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From: Dayton, Ohio
Year: 1992
Model: Comanche
Engine: 4.0
Oil can still go bad, I had my flushed 1.2k miles ago same with the coolant and then all of this **** broke off and mixed in with my new stuff. sometime it takes a few changes and few filters to make it all clean and nice again..
Thread Starter
Senior Member
Joined: Dec 2010
Posts: 848
Likes: 0
From: Pittsburgh, PA
Year: 2000
Model: Cherokee
Engine: 4.0 I6
Had codes read. Came back as Multiple/random misfire. Cylinder 1 misfire, cylinder 2 misfire, and cylinder 3 misfire. The guy recommend changing plugs and wires. But I have a coil pack what wire would I be changing? I will do plugs again even though the were changed 5500 miles ago.
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