Jeep pops when warming up ? - JeepForum.com

 
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post #1 of 6 Old 04-23-2013, 05:24 PM Thread Starter
Candymancan
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1998 ZJ 
 
Join Date: Aug 2010
Location: Virginia
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Jeep pops when warming up ?

I dont think i remember my 5.9 poping like this while warming.. I cant tell where its coming from... It doesnt do it when its totally warmed up only when cold. Is it just metal expanding or does this sound like a mini backfire to you ? Like every 10 seconds itll make a ting noise. I have a recorded video if youd like to hear it

Started doing this shortly after i fixed my plenum on my intake manifold.


http://www.youtube.com/watch?v=cC66j...ature=youtu.be

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post #2 of 6 Old 04-23-2013, 05:39 PM
AmishFury
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1997 ZJ 
 
Join Date: Oct 2011
Location: Evansville
Posts: 770
take a look at your belt tensioner... if you see it twitch when it makes that noise then something is causing the belt to drag (i had a 96 1500 5.9 that did something similar when the water pump was on it's way out)
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post #3 of 6 Old 04-24-2013, 11:23 PM Thread Starter
Candymancan
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any 1 ?
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post #4 of 6 Old 04-25-2013, 04:01 AM
a70eliminator
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1998 ZJ 
 
Join Date: Dec 2004
Location: Kent Ohio
Posts: 957
My 5.9 does that same EXACT! poping noise, I just bought it and was changing fluids and cleaning up engine bay and noticed the poping saound like ever 25-30 seconds like yours, I passed it off as expansion.
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post #5 of 6 Old 04-25-2013, 12:54 PM Thread Starter
Candymancan
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Weird... It never used to do that before i took off my intake manifold and replaced the gasket/pan ect.. Oh well, it doesnt do it when fully warmed up but i thought it was wierd as i have never had it do that before.

Does yours do it only when its cold and warming up ?
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post #6 of 6 Old 04-25-2013, 01:04 PM
jm8881
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1996 ZJ 
 
Join Date: Oct 2005
Location: Palm Desert
Posts: 849
At first I thought it was your a/c compressor kicking on and off but if it goes away when it warms up so I'm stumped.
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