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Old 09-18-2013, 06:55 AM   #1
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Question 2000 TJ Whistling Sound

My 2000 TJ Sport, 4.0L began making a whistling sound right at the end of the last winter, but went away during the entire summer. Now that the mornings are cooler again, the whistling sound begins about 3-5 minutes after I start up, but then disappears after driving for about 15 minutes. If I go out during the day when it's warmer it doesn't happen. The sound gets pretty loud at times before it goes away, is air flow related and it definitley comes and goes with the colder temps. Any thoughts? I am not very savvy when it comes to vehicle diagnosis and repair, so any responses with in simple terms and detail would really be appreciated! Thank you!

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Old 09-18-2013, 09:20 AM   #2
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Next time you hear said whistle take and spray some starting fluid around the throttle body. If the idle changes then you have a leaking gasket. It can be replaced in about 15 mins.

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Old 09-18-2013, 12:55 PM   #3
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Mine did that when it was wet once it dried and warmed up it stops
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Old 09-18-2013, 01:04 PM   #4
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You may also want to tighten the intake manifold, I had the same whistle you are speaking of, The variance of heat from the exhaust and the intake caused the leak over time. It's a pain to get the back bolts near the firewall but once I got to them that did the trick.

It took me a week to find it after trying everything else.... Good Luck
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Old 09-18-2013, 01:06 PM   #5
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Quote:
Originally Posted by RnEmOvr View Post
Next time you hear said whistle take and spray some starting fluid around the throttle body. If the idle changes then you have a leaking gasket. It can be replaced in about 15 mins.

Hey Brother, Whats the chances of happening across you on another forum. MJ member Terry Coleman
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Old 09-18-2013, 01:19 PM   #6
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Hey Brother, Whats the chances of happening across you on another forum. MJ member Terry Coleman
On a Jeep forum very likely, I've seen a few people here that I recognize from over at IFSJA & it's been years since I've owned a FSJ.
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Old 09-18-2013, 01:55 PM   #7
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On a Jeep forum very likely, I've seen a few people here that I recognize from over at IFSJA & it's been years since I've owned a FSJ.

Yeah, Now that you put it that way. Very True
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Old 09-18-2013, 08:26 PM   #8
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Hey Brother, Whats the chances of happening across you on another forum. MJ member Terry Coleman
I'm on jeep forum, military jeepers, compd, Cummins forum, diesel bombers, rc crawlers, nitro talk, power stroke.org, PSA, dodge owner forum, ar15, gun broker, and probably more I am forgetting under the same name. My Xbox name was the same till I changed it to penguin f0ndler

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