random miss fire
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Newbie
Joined: Jun 2010
Posts: 6
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Model: Cherokee
random miss fire
I am having check engine light and it is Random miss fire num. 3, low fuel pressure vac leak?? I did find vac leak and fixed.but still missing bad ,what to do next check plugs?wires?fuel pressure.
CF Veteran
Joined: Nov 2010
Posts: 5,840
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From: In the middle of Minnesota!
Year: 1999
Model: Cherokee
Engine: 4.0
What year?
What engine?
What are actual codes? (numbers, not a description).....Random misfire is P0300, cylinder misfire is P0303, do you have both?
There are significant differences through the years, therefore the questions.
What engine?
What are actual codes? (numbers, not a description).....Random misfire is P0300, cylinder misfire is P0303, do you have both?
There are significant differences through the years, therefore the questions.
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