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Old 02-15-2012, 12:47 AM   #1
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Ain't whistling Dixie

I hope someone can help. I'm at a loss. When I let off my accelerator I get a whistling noise. I've replaced the water pump, the belt tensioner and the fan clutch. It sounds like it is in the area of the power steering pump. Is that a possibility, or is there something else I'm overlooking. I have a 2004 Wrangler X with the six cylinder. All comments greatly appreciated.

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Old 02-15-2012, 01:33 AM   #2
Knows a couple things...

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Probably a vacuum leak. The amount of vacuum inside the intake manifold/engine raises up dramatically when you take your foot off the accelerator pedal so even a small leak would be sucking in more air at that time and cause a whistle. Check the large and small vacuum hoses that connect to the intake manifold for possible leaks.

And has the intake manifold ever been off the engine since you have owned your TJ?

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Old 02-15-2012, 03:22 AM   #3
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Posted this just 12 hours ago.

Search is your friend.

I had the "Tea Kettle" whistle until 2 days ago. I had checked vacuum lines, Throttle body. Intake gasket. Nothing seemed to be wrong. it would wistle at Idle and if you reved the engine while not in gear with no load on it. Put it in gear and drive and while your accelerating no whistle. Get up to speed and it came back, or let off the throttle and it came back. Drove me nuts. The wife could hear me pull in the driveway. Then I stumbled across the culprit. I have a 2004 with the 2 piece exaust manifold. The rear manifold has a collar on it with 2 studs that connect to a floating collar on the down pipe. The nuts that hold the floating collar along with the down pipe tight to the exaust manifold were missing. The collar was still in place but had no nuts forcing it together. As the engine warmed up exaust leaked out causing the wistle. Under load while accelerating the engine must have twisted just enough to form a good seal. Found 2 17 MM nuts in the garage and put them on. HOLY CRAP!!!! NO MORE WISTLE!!!! Peanut Butter Jelly Time!!! Peanut Butter Jelly Time!!! Peanut Butter Jelly Time!!!

Hope that helps some one.
If Peanut Butter Jelly Time leaves you scratching your head like my father. Here is a link. http://youtu.be/1TB6Xeye5-0 If you still don't get it, I am sorry I can't help you, please go to the lost and found and look for your sense of humor.
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Old 02-15-2012, 06:04 AM   #4
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I posted the same question yesterday....I searched "whistle" and got a few good threads with things to check out.

Hope it helps...
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Old 02-15-2012, 08:20 AM   #5
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Thanks folks. This gives me a few more things to look for. @Jerry, no. The manifold has not been removed during my ownership. As a matter of fact, this is the first problem I've encountered in the 4 and a half yrs. I've owned it.
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