Engine Rattle under load
JK Enthusiast
Joined: Dec 2008
Posts: 450
Likes: 0
From: Portland, Maine
I have had more of a buzz than a rattle, but proportional to speed. Is yours like that or is it more consistent and longer durations?
Here was my buzz post:
https://www.jk-forum.com/forums/show...t=engine+noise
Here was my buzz post:
https://www.jk-forum.com/forums/show...t=engine+noise
JK Newbie
Joined: Feb 2007
Posts: 85
Likes: 0
From: MA
I got this rattle too ... when it first started it sounded like pinging. It used to happen only between 3000 - 3500 rpm ... now it rattles and rings all the time,
now everyone looks at me when I pull away from a stop... haha.
been under the jeep many times banging around
This has to be some sort of heat shield... i'm gonna feel stupid when I find it.
now everyone looks at me when I pull away from a stop... haha.
been under the jeep many times banging around
This has to be some sort of heat shield... i'm gonna feel stupid when I find it.
JK Enthusiast
Joined: Nov 2007
Posts: 459
Likes: 1
From: Birmingham, AL
Check your exhaust crossover pipe spot welds. It has about 6 or 8 welds and if that weld cracks it almost sounds like you have tranny probs cause it does it under load. Hadf 2 of mine crack , took me three days the first time to find it. I just used a screw driver and bent the heat shield away from the exhaust. That little weld makes a helluva racket when cracked.
Apparently that's Chrysler's solution for bad welds on the exhaust.
JK Newbie
Joined: Mar 2012
Posts: 32
Likes: 0
From: califon, nj
Anybody have any other ideas on what it could be? I have an 08 Jk unlimited and get the marbles in a can sound only when I'm in gear and accelerating. Not when I'm in neutral and revving it. I've already fixed the welds on the crossover pipe heat shield. HELP!
Edit: It seems to happen more when I'm shifting
Edit: It seems to happen more when I'm shifting
Last edited by njfirefighter92; Apr 19, 2012 at 05:48 AM.
JK Enthusiast
Joined: Jun 2011
Posts: 261
Likes: 0
From: West Jordan
Its called PINGING!!!!! our jeeps are notorious for this..... try running a better grade of fuel.... anything 87 octane or higher.... here in utah our reg is 85 octane and mine pings so I have to run mid grade which is 88 octane and the pinging goes away... unless I use the 87 octane tune from my superchips then the pinging comes back..... ugh!
Super Moderator
Joined: Jun 2011
Posts: 11,054
Likes: 85
From: Hendersonville, Tennessee
Originally Posted by njfirefighter92
Anybody have any other ideas on what it could be? I have an 08 Jk unlimited and get the marbles in a can sound only when I'm in gear and accelerating. Not when I'm in neutral and revving it. I've already fixed the welds on the crossover pipe heat shield. HELP!
Edit: It seems to happen more when I'm shifting
Edit: It seems to happen more when I'm shifting
JK Enthusiast
Joined: Sep 2008
Posts: 245
Likes: 0
From: SoCal, USA
same issue here. been trying to find it for a few weeks now. I thought the crossover pipe only had 3 welds (what i could see with my aftermarket skid plate) and all were ok...now I will probably remove the armor and look for the other 3 welds!
JK Newbie
Joined: Apr 2012
Posts: 3
Likes: 0
From: Wylie, TX
I get this pinging/marbles in a can under load/acceleration too. I have a 2011 with 15k miles. I tried running 89 octane for one tank to see if it went away and it didn't. I guess I need to get under there and look around. I've been passing it off as possibly pebbles stuck in places from being off-road.