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Go Back JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > ZJ Grand Cherokee Forum > Lower engine knock.

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Unread 06-23-2013, 08:24 PM   #1
driftwood00
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1995 ZJ 
 
Join Date: Apr 2009
Location: Hillsdale, Michigan
Posts: 93
Lower engine knock.

In the past week I have noticed a mild sounding lower engine knock, I have 180,000 miles on my Jeep, I changed the oil this weekend, checked flex plate and flex plate bolts they were fine, there was no metal or anything when I changed the oil, it still runs fine with no power loss and the noise seems to go away when driving I only hear it at idle, I know that this is not normal but is it something I must worry greatly about, is it a bad wrist pin, piston slap, piston skirt? Im just trying to get an idea if it is worth the trouble fixing. Looking for any feed back from people having this same problem and the ultimate outcome. Thanks in advance.

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1995 JGCL
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Unread 06-23-2013, 09:10 PM   #2
ZeeJay1997
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1997 ZJ 
 
Join Date: Dec 2008
Location: Sweet Home, Alabama
Posts: 6,184
I know you said the engine is knocking, but does it do it in neutral, park, and drive?
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Unread 06-23-2013, 10:09 PM   #3
driftwood00
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1995 ZJ 
 
Join Date: Apr 2009
Location: Hillsdale, Michigan
Posts: 93
Yes, but goes away it seems when I am driving.
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Unread 06-25-2013, 10:22 AM   #4
driftwood00
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Location: Hillsdale, Michigan
Posts: 93
bump
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Unread 06-25-2013, 10:26 AM   #5
MasterOne
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1998 ZJ 
 
Join Date: Jun 2012
Location: , California
Posts: 84
Without a video with sound, diagnosing what you are describing is like playing roulette.
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