1999 jeep cherokee 6 cylinder engine light stays on, checked
codes. code P0303 comes up.
What can be the problem and
possible solutions.
That code is for cylider 3 misfire, chek spark plugs cables spark plugs, spark at the end of cable, if it is no spark check the fuses for the power to the coil, test the coil. reddragon3030
1.Plugs
2. Vacuum leak
3. Injector fault
4. High or low fuel pressure.
Thats the list of things to check.
This is a #3 cylinder misfire.
There is also TSB about #3 injector needing added heat protection. This could definitely be the cause. I start at plugs and go from there.
Hope this helps.
Thank you,
Lee
P0303 Cylinder 3 mis-fire Possible causes misfire does not return,defective Camshaft Position (cmp)or CKP sensor,vacuum leak,defective ignition system.
A code P0303 may mean that one or more of the following has happened:
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