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Old 11-03-2010, 03:43 PM   #1
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Question Another thread about a weird wrangler noise

So I did some searching around the forums and havnt found what Im looking for so here is my issue. When I start the my jeep (2003 TJ) in the mornings, down around the passenger side floorboard it sounds like a growling/sucking/blowing noise. It seems like it may only be doing it when I first start up in the morning and only recently. It has been fairly cold lately, not sure if that has anything to do with it. I have only just noticed it recently and I thought if anyone knew what it was, it would be a fellow wrangler owner. Any thoughts??

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The three most common expressions (or famous last words) in aviation are:
- "Why is it doing that?",
- "Where are we?"
- and "Oh Sh!t!"

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Old 11-03-2010, 03:52 PM   #2
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Directly under that floorboard, is your exhaust pipe, catalytic converter, and muffler, so I'm gonna go out on a limb here and say you have an exhaust leak....

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Old 11-03-2010, 04:17 PM   #3
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That would give me an awesome excuse to replace it and get something aftermarket with some sound to it. I kinda hope thats the problem, haha.
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The three most common expressions (or famous last words) in aviation are:
- "Why is it doing that?",
- "Where are we?"
- and "Oh Sh!t!"

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Old 11-03-2010, 08:29 PM   #4
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Originally Posted by cpainter56 View Post
Directly under that floorboard, is your exhaust pipe, catalytic converter, and muffler, so I'm gonna go out on a limb here and say you have an exhaust leak....
^^^ Wouldn't this trigger the check engine light? Not sure which is why I'm asking. Funny, mine does the same exact thing. It's like a hissing sound. ONLY during cold mornings does it occur....
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Old 11-03-2010, 08:38 PM   #5
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Isn't the heater core right behind the dash on the passenger side? If you get air in your collant system it makes a noise similar to the one your describeing.
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Old 11-03-2010, 09:06 PM   #6
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Isn't the heater core right behind the dash on the passenger side? If you get air in your collant system it makes a noise similar to the one your describeing.
I was thinking the same thing....which is why I never really worried about it. The sound that mine makes is identical to the sound my air conditioner makes when I shut it off....somewhat like a hissing sound.
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Old 11-03-2010, 09:10 PM   #7
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You definatly don't want air in the system that's for sure. It coud cause you engine to overheat and that could cause even more problems, expensive problems
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Old 11-03-2010, 09:16 PM   #8
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You definatly don't want air in the system that's for sure. It coud cause you engine to overheat and that could cause even more problems, expensive problems
Dammit! Just when I thought I was in the clear....I'll have to check it out as well then. I'm gonna be optimistic about this situation since I've had my Rubicon for a year now and no overheating engine. I've been hearing that noise only during cold mornings since I purchased it. I guess I'll just have to wait and see.....
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Old 11-04-2010, 10:07 AM   #9
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Instead of waiting you could drain you coolant and put new in. It might be a good idea since winter is coming up and depending on where you live you coolant might not be up to par.
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Old 11-04-2010, 11:35 AM   #10
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Its air, drain the juice and refill it, make sure to burp it a few times.....
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Old 11-04-2010, 11:48 AM   #11
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Instead of waiting you could drain you coolant and put new in. It might be a good idea since winter is coming up and depending on where you live you coolant might not be up to par.
Will do! Thanks a bunch....
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Old 11-04-2010, 06:18 PM   #12
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Yea, its always on cold days, ill have to check that fluid, thanks for the advice folks.

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The three most common expressions (or famous last words) in aviation are:
- "Why is it doing that?",
- "Where are we?"
- and "Oh Sh!t!"

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