Knock in 4.0
#1
Knock in 4.0
It sounds like its coming from the oil pan .Thats where its the loudest. What can this be? Its a 94 ZJ with 171,xxx miles on it. It runs good but does stumble at times. I've had it for a month now. I've had about 8 times where it will start and idle really rough, but then it smoothes out and runs fine. One time it wouldn't start at all, I put a quick shot of ether in it and it started right up. I pulled the throttle body, tps and iac, cleaned them and relpaced the fuel filter, air filter, plugs and wires. Also it has a new complete exhaust system. Any ideas? Thanks. Its an auto.
Last edited by troy fritz; 04-17-2010 at 01:47 PM.
#4
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Location: Modesto
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Year: 1993
Model: Cherokee
Engine: 4.0 high output straight 6
it's an automatic tranny correct?
I would get under it and check all of the bolts on the torque converter. Its a pretty common problem that they will come loose and make the sounds you are explaining.
Hope that helps,
Matt
I would get under it and check all of the bolts on the torque converter. Its a pretty common problem that they will come loose and make the sounds you are explaining.
Hope that helps,
Matt
#7
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Year: 1993
Model: Cherokee
Engine: 4.0L I6
yea i would run it till you find a cheap motor to replace it with i have went 3000 miles on mine..and it sounds like a submachine gun lol
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#9
I would check the converter bolts, but if that do not fix, rebuild engine. I did many engines and it is not that much complicated. Most of the time, you can change the crank bearing with engine in frame. Do not mix the caps.
If crank is not damage then drop the pan and change one at a time.
If crank is not damage then drop the pan and change one at a time.
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