JeepZiggy91
NAXJA Forum User
- Location
- bullhead city
91 4.0 aw4 242
for about a month now my jeep has been running like $hit, that is the best way i can explain it. huge loss in horsepower. exhaust sounds like an automatic bb gun. occasional backfire. popping. can clearly tell that a cylinder is missing. it started doing this occasionaly and then would go back to running like a bat out of hell. now it does it all the time and occasionaly it runs fine. while im driving i can shut it off and let it coast for a few seconds, start it and it will run just fine for a few miles or while im driving i can put it in N and rev it up to 5000 and it will run fine for a few miles too. you cant tell/hear it when its in park and at idle or even when you rev it.
ive taiked to a few mechanics and they've all said something different so here is a list of the things ive done to try to correct:
plugs
wires
rotor
cap
oil change
cleaned air filter
tps
map
o2 sensor on down pipe (no cat. no second sensor)
fuel filter
fuel sending unit
cleaned throttle body
fuel pressure regulator
i also have oil that comes out of my air filter, (blow-by??)
im at the point that im either gonna put a new motor in it or buy a new xj and keep this one for parts. id really love it if i didnt have to do either so please help.
ZIGGY!!!1
for about a month now my jeep has been running like $hit, that is the best way i can explain it. huge loss in horsepower. exhaust sounds like an automatic bb gun. occasional backfire. popping. can clearly tell that a cylinder is missing. it started doing this occasionaly and then would go back to running like a bat out of hell. now it does it all the time and occasionaly it runs fine. while im driving i can shut it off and let it coast for a few seconds, start it and it will run just fine for a few miles or while im driving i can put it in N and rev it up to 5000 and it will run fine for a few miles too. you cant tell/hear it when its in park and at idle or even when you rev it.
ive taiked to a few mechanics and they've all said something different so here is a list of the things ive done to try to correct:
plugs
wires
rotor
cap
oil change
cleaned air filter
tps
map
o2 sensor on down pipe (no cat. no second sensor)
fuel filter
fuel sending unit
cleaned throttle body
fuel pressure regulator
i also have oil that comes out of my air filter, (blow-by??)
im at the point that im either gonna put a new motor in it or buy a new xj and keep this one for parts. id really love it if i didnt have to do either so please help.
ZIGGY!!!1