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Unread 04-07-2013, 09:05 PM   #1
BrandonYJReed
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1990 YJ Wrangler 
 
Join Date: Jun 2012
Location: Essington, Pennsylvania
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so i got a weird noise...

lately when I have been driving around I noticed a noise my YJ makes. whenever I let off the gas to shift or coast my jeep makes a whistle type noise until I come to a stop then it goes away, or as soon as I get back on the gas the whistling goes away.. and its not like its doing it constantly and im not hearing it over the jeep, It is only while off the gas. anyone ever had this issue?

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-1990 YJ, 2.5L, AX-15, lifted, locked, on 35's.

-1999 XJ, 4.0, AW4, lifted 4.5", JK Rubi take offs.
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Unread 04-08-2013, 10:03 PM   #2
BrandonYJReed
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Anyone?
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-1990 YJ, 2.5L, AX-15, lifted, locked, on 35's.

-1999 XJ, 4.0, AW4, lifted 4.5", JK Rubi take offs.
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Unread 04-08-2013, 10:11 PM   #3
GottaYJ
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In gear or neutral or both?

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Unread 04-08-2013, 10:15 PM   #4
BrandonYJReed
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Quote:
Originally Posted by GottaYJ
In gear or neutral or both?

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Both
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-1990 YJ, 2.5L, AX-15, lifted, locked, on 35's.

-1999 XJ, 4.0, AW4, lifted 4.5", JK Rubi take offs.
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Unread 04-08-2013, 10:21 PM   #5
Reno72
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Does it make the noise only while moving, or is it related to engine speed? First thought was vacuum but if it's only while moving that would not be it. Is it more a whistle or a whine?
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Unread 04-08-2013, 10:27 PM   #6
GottaYJ
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If only when moving check your front hub assemblies or ujoints. Jack the front tires up and spin them by hand and listen for the noise.

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Unread 04-08-2013, 10:38 PM   #7
BrandonYJReed
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Quote:
Originally Posted by Reno72
Does it make the noise only while moving, or is it related to engine speed? First thought was vacuum but if it's only while moving that would not be it. Is it more a whistle or a whine?
Only when moving. Stops when my jeep does
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-1990 YJ, 2.5L, AX-15, lifted, locked, on 35's.

-1999 XJ, 4.0, AW4, lifted 4.5", JK Rubi take offs.
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Unread 04-08-2013, 10:39 PM   #8
BrandonYJReed
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Quote:
Originally Posted by GottaYJ
If only when moving check your front hub assemblies or ujoints. Jack the front tires up and spin them by hand and listen for the noise.

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Will do
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-1990 YJ, 2.5L, AX-15, lifted, locked, on 35's.

-1999 XJ, 4.0, AW4, lifted 4.5", JK Rubi take offs.
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Unread 04-10-2013, 04:59 PM   #9
BrandonYJReed
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http://youtu.be/iw-uRiSR3wM maybe this will help a little.
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-1990 YJ, 2.5L, AX-15, lifted, locked, on 35's.

-1999 XJ, 4.0, AW4, lifted 4.5", JK Rubi take offs.
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Unread 04-10-2013, 05:04 PM   #10
Chrisnvegas
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Interesting. Does it change pitch with rpms or road speed? What if you put it into neutral and coast? Does it seem to be coming from the engine compartment, underneath, right side ect?

Sounded almost something air related. Maybe vacuum
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Unread 04-10-2013, 05:19 PM   #11
BrandonYJReed
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Quote:
Originally Posted by Chrisnvegas
Interesting. Does it change pitch with rpms or road speed? What if you put it into neutral and coast? Does it seem to be coming from the engine compartment, underneath, right side ect?

Sounded almost something air related. Maybe vacuum
Stays pretty much same pitch, doesn't really change with RPM's or speed, it does it when in neutral an at a coast, and maybe from the rear of the jeep but hard to tell, could be from the front just as well. The noise stops for the most park when I am on the throttle...
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-1990 YJ, 2.5L, AX-15, lifted, locked, on 35's.

-1999 XJ, 4.0, AW4, lifted 4.5", JK Rubi take offs.
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Unread 04-10-2013, 07:14 PM   #12
BrandonYJReed
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Quote:
Originally Posted by BrandonYJReed
http://youtu.be/iw-uRiSR3wM maybe this will help a little.
Anyone??
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-1990 YJ, 2.5L, AX-15, lifted, locked, on 35's.

-1999 XJ, 4.0, AW4, lifted 4.5", JK Rubi take offs.
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Unread 04-10-2013, 07:30 PM   #13
BrandonYJReed
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Okay so it sounds like it might be the seal or something in my SYE housing. I was rolling the jeep around without it running and it was making a kinda squealing noise or something... Could it be the rubber for the seal as the shaft is turning? What can I do to fix this? I'm lost...
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-1990 YJ, 2.5L, AX-15, lifted, locked, on 35's.

-1999 XJ, 4.0, AW4, lifted 4.5", JK Rubi take offs.
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Unread 04-10-2013, 07:42 PM   #14
GottaYJ
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Try to get some bearing grease on it.

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