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Unread 07-26-2011, 12:40 AM   #1
cherokeen
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Timing chain going bust? [ZJ-GC 4.0L]

Theres a slight engine grinding noise on my Grand Cherokee Ltd (1996,181000k) it sounds to be the timing chain going bust and seems to only do it when i go from Park to drive or Nuetral to Drive/Reverse and more common when im off road.
Would this be a possible timing chain problem? I used to hear something similar when i had my 97 Explorer with a fkd timing chain (sold that within 13 days of having it, piece of s**t.)

Cheers all

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Unread 07-26-2011, 06:23 AM   #2
Candymancan
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Just replaced the timing chain on my 5.9, but i dont know much about timing chains in general, my old one was fine but i replaced it cause i was fixing the gasket leak i was having. Anyway, i heared if your chain is bad it can cause problems with starting and grinding noises in the engine.

Have you had someone actually put it in park/reverse ect while you were up front listening ? I ask this because it could possibly be the transfercase or transmission doing this.

Here is a writeup i found on replacing the I6 timing chain

http://www.naxja.org/forum/showthread.php?t=903937
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Unread 07-26-2011, 07:11 AM   #3
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perhaps your fan is hitting the shroud when your motor torques over from bad motor mounts?
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Unread 07-26-2011, 08:10 AM   #4
speedbucket
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your talking about the timing chain at the front of the motor and not confusing it with the transfer case chain right?
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Unread 07-26-2011, 11:16 AM   #5
cherokeen
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honestly im not too similar with the timing chain on the grand cherokee's, i should be but im not, it doesn't seem like a bad problem but whenever it is idling it makes the sound.. if its something i should be worrying about i dont know.

a bit odd but does the transfer case make a sound when just standing still with the engine running?
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Unread 07-26-2011, 11:19 AM   #6
speedbucket
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Quote:
Originally Posted by cherokeen View Post
Theres a slight engine grinding noise on my Grand Cherokee Ltd (1996,181000k) it sounds to be the timing chain going bust and seems to only do it when i go from Park to drive or Nuetral to Drive/Reverse and more common when im off road.
Would this be a possible timing chain problem? I used to hear something similar when i had my 97 Explorer with a fkd timing chain (sold that within 13 days of having it, piece of s**t.)

Cheers all

honestly im not too similar with the timing chain on the grand cherokee's, i should be but im not, it doesn't seem like a bad problem but whenever it is idling it makes the sound.. if its something i should be worrying about i dont know.

a bit odd but does the transfer case make a sound when just standing still with the engine running?
no it does not but that was not specified in your first post, only that it makes noise shifting from drive gears
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Unread 07-26-2011, 11:37 AM   #7
jreyes0a39oz
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if it where the timing chain it would do it always no mater if it was idling or driven since the timing chain is running all the time
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