Howling noise front end??? Please help - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > ZJ Grand Cherokee Forum > Howling noise front end??? Please help

Premium LED Lighting by VISION X, Proudly sold at ROCKRIDGFS: Wrangler RGB Multicolor Fog Light LEDs: Awesome EffectCess Recovery Gear Snatch Tow Strap OffRoad @ ROCKRIDGE4WD

Reply
Unread 06-19-2013, 07:31 AM   #1
94cherokeesprt
Registered User
1997 ZJ 
 
Join Date: Jan 2012
Location: rosemount, minnesota
Posts: 192
Howling noise front end??? Please help

I have a 1997 zj the front end howls at all speeds I have heard the u joint could be bad the diff could be bad the hub (driver side) could be bad? Any guidance? What's more likely?

__________________
The best jeep is a dirty jeep

Inside every keg is a six pack
94cherokeesprt is offline   Reply With Quote
Unread 06-19-2013, 07:33 AM   #2
PolkaPower
Registered User
1998 ZJ 
 
Join Date: Aug 2011
Location: The Abyss, MD
Posts: 15,957
Howling noise at all speeds are bearings or gears. So possibly pinion, possibly hub, possibly gears, I can't tell from here. It depends on the type of howl. Bearings sound like marbles in a can grinding on sand and gears can howl. Open up the front end and inspect it.
PolkaPower is offline   Reply With Quote
Unread 06-19-2013, 07:35 AM   #3
94cherokeesprt
Registered User
1997 ZJ 
 
Join Date: Jan 2012
Location: rosemount, minnesota
Posts: 192
Alright I was hoping there was a common problem but I also figured it wouldn't result in much
__________________
The best jeep is a dirty jeep

Inside every keg is a six pack
94cherokeesprt is offline   Reply With Quote
Unread 11-29-2013, 12:03 AM   #4
98cherokeeJeep
Registered User
 
Join Date: Nov 2012
Location: Maple Ridge, BC
Posts: 71
Did u fix this op, i already replaced my front and rear diffs with ones at wreckers and all it did was change the pitch of the howl, and now it just occurs at a higher speed
98cherokeeJeep is offline   Reply With Quote
Unread 11-29-2013, 12:58 AM   #5
shaban
Registered User
1996 ZJ 
 
Join Date: May 2012
Location: Yarraville, VIC, AU
Posts: 413
Check your gears when changing the oil, look for damage. Maybe adjust the pinion preload, put a new collapsible sleeve, new pinion nut and a new pinion seal.
That helped me with my howling diff.
shaban is offline   Reply With Quote
Unread 11-29-2013, 06:13 AM   #6
98cherokeeJeep
Registered User
 
Join Date: Nov 2012
Location: Maple Ridge, BC
Posts: 71
ya i have no idea when it comes to with working with gears...but im so fed up, replaced my entire f'ing drivetrain and its still doing this..
98cherokeeJeep is offline   Reply With Quote
Unread 11-29-2013, 07:21 AM   #7
mrgimble
Registered User
1997 ZJ 
 
Join Date: Aug 2007
Location: Halifax, Nova Scotia, Canada
Posts: 393
Did you run it without the front DS? My howling noise goes way with the front DS out. I guess it could be the TC front output bearing or a front diff part. With the DS out there is no stress on the front drive. I am going to swap in a np242 so I don't have to worry about it 99% of the time.
__________________
1997 ZJ Limited 5.2 V8, NP242
mrgimble is offline   Reply With Quote
Unread 11-29-2013, 12:37 PM   #8
98cherokeeJeep
Registered User
 
Join Date: Nov 2012
Location: Maple Ridge, BC
Posts: 71
I have the all time 4 wheel drive though, dont wanna f up the t-case by removing the driveshaft...And ya i can do the swap, but dont really want to. I love the all time 4 wheel drive, and i only drive it during the cold months.... I really wish i could tell where my howling is coming from, it sounds like its super oud inside and is bouncing off everything in the cab..Impossible to figure out...I have a feeling its the front diff, because my old one howled from 30km-120km....But wasnt crazy loud..And i just put a junker one in and thought it fixed it, because it doesnt howl from 30-90km anymore...But once you get close to 100 km wow, i get this really loud howl, almost twice as loud as the original diff i had in there... I really wish someone would tell me it was my hubs or wheel bearing doing this noise....but really think its the gears
98cherokeeJeep is offline   Reply With Quote
Unread 11-29-2013, 12:39 PM   #9
98cherokeeJeep
Registered User
 
Join Date: Nov 2012
Location: Maple Ridge, BC
Posts: 71
it really sucks i would live with it, but im on the highway 98% of the time doing the exact speed where it howls at.....cant have that its way too annoying..****ty part is I really dont want to change the axle again..and the money i spent on getting used front and rear diffs, i could have the front diff rebuilt
98cherokeeJeep is offline   Reply With Quote
Unread 11-29-2013, 12:56 PM   #10
shaban
Registered User
1996 ZJ 
 
Join Date: May 2012
Location: Yarraville, VIC, AU
Posts: 413
Since youve got a spare axle, tinker around with it. Redoing the pinion preload is not too hard, way easier than doing the whole diff.
shaban is offline   Reply With Quote
Unread 11-29-2013, 01:29 PM   #11
98cherokeeJeep
Registered User
 
Join Date: Nov 2012
Location: Maple Ridge, BC
Posts: 71
ya i suppose....i just wish i could tell which diff is making the noise, i almost think it might be the rear....tempted to put in my old rear end and see what happens. This could get ugly i could see myself swapping everything over and over and never fix the problem lol
98cherokeeJeep is offline   Reply With Quote
Unread 11-30-2013, 07:21 AM   #12
Camaro16
Member
1998 ZJ 
 
Join Date: Dec 2011
Location: Belfast, UK
Posts: 325
My front diff whines - I did a temporary ahem "fix" by putting in SUPER thick lube and the anti-friction additive Mopar sell for LSDs in the rear. It shut it up for the time being, until I have time to swap out axles.
Camaro16 is offline   Reply With Quote




Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.