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Loud obnoxious rattle from my 2005

5K views 17 replies 9 participants last post by  paul65k 
#1 ·
I have been hearing a rattling noise coming from the undercarriage of my 2005 Wrangler Sport for a few weeks now. I thought, after reading some of the other posts here, that I might be experiencing the heat shield rattle that many have had, but I'm not sure now.

I was recently in a drive through and I took it out of gear so I wouldn't have to keep holding the clutch, but I noticed that when I applied the clutch, the rattle stopped. Granted, when it sits and idles the rattle is faint at best, but I did notice that it stopped completely when the clutch is pushed in.

Usually the rattle is loudest when I am in first gear, getting ready to shift to second, or when I am coming to a stop. When I get past second gear the rattle goes away.

As I said, the rattle is only faint when sitting still and much louder when I am in a low gear and moving slowly.

I plan to crawl up under it this weekend to check out the heat shield, but is there something else I should look for? I am no professional mechanic, but I'm not afraid to try to fix something myself as long as I know I have the necessary tools on hand.

By the way, just for information, my TJ has 4.0 6-Cyl. with a six-speed manual tranny. No lifts or suspension mods. Yet.:thumb:
 
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#2 ·
I also have a 2005 sport with a 4.0 and 6 speed gearbox and a rattle that is similar to your description. I've never thought of it enough to remember to post about it, so this is relevant to my interests. My name is Bryan, too. Weird. Lol.
 
#8 ·
How many miles on the tires? The reason I ask is I always had a bad vibration and rattle at low speeds, leaving from a stop and stopping. Turned out to just be my tires that were worn out. Got new ones and its all gone.
 
#12 ·
My '98 4.0 Auto has a fun undercarriage rattle, too...it happens when I'm idling in drive (stops if I shift to neutral) and louder for the first few seconds of accelerating from a stop. And it doesn't always happen - maybe 60% of the time. It's on my to-do list to get it fixed. :rolleyes:
 
#15 ·
Paying a little closer attention to it this morning as I was pulling out of the parking lot. It seems that it does rattle on occasion when the clutch is pushed in, but only if it's rolling. Not if completely stopped. Not as loudly, but it still rattles if I am cruising at 5 to 10 mph with the clutch pushed in and if I slow down by applying the brake or if I roll over a speed bump. Basically any small action that bounces or lurches.

Trying to narrow it down as much as possible.

I also noticed this morning that it didn't rattle quite as much as it normally does. It is quite a bit cooler than normal (41 degrees), versus the normal 70+ degrees. Could the cold be a factor?
 
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