94 4.0 engine bad miss 2800-3200 rpm
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Model: Cherokee
94 4.0 engine bad miss 2800-3200 rpm
I'm back still chasing problem with hi rpm miss. Tried everything new plugs wires coil dis.pickup tps cps emc ias ,fuel pump filter has new exauhst manifold If I put auto in 1 st acc. to 2800 rpm miss starts will go into limp mode no matter how much gas looses power backfires out tail pipe and intake. Must shut down and restart to drive. Also have checked for vac. leaks and done combustion cleaner. HELP
Last edited by K Pete; 02-24-2010 at 10:09 AM. Reason: not done
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Year: 1996 & 2001
Model: Cherokee (XJ)
Engine: 4.0
Have you tried running a good fuel injector cleaner, like seafome or chemtool B-12 to clean injectors out it takes about 3 tanks for injectors cleaner to work. Water in gas will sometimes cause missing at higher rpm.
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