Rattling noise from engine, HELP
12-25-2012, 04:37 PM
#1
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Year: 1988
Model: Comanche (MJ)
Engine: I6 4.0L
Rattling noise from engine, HELP
i have a weird rattling noise in the engine, its not the valves knocking and it drives fine just when idling and such the video makes it sound louder than it is. the video below makes it sound different:
Last edited by XJGrason; 12-25-2012 at 06:57 PM.
12-25-2012, 06:52 PM
#3
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Video is unavailable. Auto trans?
Lower engine crank pulley/balancer bad?
Lower engine crank pulley/balancer bad?
12-25-2012, 07:01 PM
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Is it coming mostly from the front?
12-25-2012, 07:06 PM
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Year: 1990
Model: Cherokee (XJ)
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Also why I asked if it were front or not. These videos have sucky audio for some reason.
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12-25-2012, 07:09 PM
#10
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Year: 1990
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Yeah, I know. It's not just your video/audio, but everyone's. If from the front, I would be looking at the lowest pulley/balancer. Has the outer ring separated from the inner ring?
12-25-2012, 07:14 PM
#11
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Year: 1988
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havent looked, i just drove it like 2 hours ago. its dark here right now, i wont be able to check for at least a week, having surgery thursday and im working 1st shift tomorrow.
12-25-2012, 07:15 PM
#12
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Year: 2015, 2012
Model: Grand Cherokee (WK2)
Engine: 3.6L
Take off your serpentine belt. If the rattle stops, it's in the front dress somewhere.
If it still rattles, it could be the rod bearings/piston slap/ wristpins.
If it still rattles, it could be the rod bearings/piston slap/ wristpins.
12-25-2012, 07:36 PM
#13
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Year: 1997
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Engine: 2.5
Also, if you take a cutting torch and apply it just in front of the doors, all the way through from left to right side, and the noise goes away afterwards, I'd be confident saying your problem lies somewhere forward of the firewall.
12-25-2012, 07:54 PM
#15
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Year: 1990
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Quite a helpful suggestion. I'm sure it's just what the OP needed to hear.