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Equipment & Gear => Power Equipment & RV => Topic started by: rudedawg1085 on January 29, 2013, 09:14:15 AM

Title: Whinning sound from back of truck
Post by: rudedawg1085 on January 29, 2013, 09:14:15 AM: Anyone ever have a whinning sound coming from the back on their diff case?? latley its been getting worse and wrose and the faster i go the louder it gets. I opened it up, drained the oil, but there were no metal shavings like i thought i would see, and the teeth of the gears were perfectly smooth. Also someone told me if it the pinion bearing was bad you would be able to shake the drive shaft, but its stays stiff when i try....any thoughts?
Title: Re: Whinning sound from back of truck
Post by: pianoman9701 on January 29, 2013, 09:17:43 AM: Yes, I've had this. I ran over my first wife, her dress got wrapped around the rear axle, and the whining didn't stop for, oh, about 3/4 of a mile. The same thing will happen if a liberal gets stuck there, except the whine will be a much higher pitch. I hope this was helpful. :tup:
Title: Re: Whinning sound from back of truck
Post by: tshoote30 on January 29, 2013, 10:42:38 AM: Quote from: pianoman9701 on January 29, 2013, 09:17:43 AM
Yes, I've had this. I ran over my first wife, her dress got wrapped around the rear axle, and the whining didn't stop for, oh, about 3/4 of a mile. The same thing will happen if a liberal gets stuck there, except the whine will be a much higher pitch. I hope this was helpful. :tup:

:chuckle: :chuckle: :chuckle: :chuckle:
Title: Re: Whinning sound from back of truck
Post by: Mudman on January 29, 2013, 11:12:48 AM: :chuckle:Is it high or low pitch? Sounds like a bearing. Kind of stupid question sorry, but tires wearing down can start to hum-whine? What kind of truck,diff.?
Title: Whinning sound from back of truck
Post by: jackelope on January 29, 2013, 11:30:41 AM: What kind of truck? And are you sure it's coming from the rear? Does the noise change when you make turns?
Title: Re: Whinning sound from back of truck
Post by: rudedawg1085 on January 29, 2013, 12:52:43 PM: Its a 2006 F-150 XF4 5.4 triton. Yea im positive its come from the diff case. I threw it up on jacks and had my buddy step on the gas as i put my ear up to the diff case ;) maybe not the smartest idea....

the sound dosent change when i turn
Title: Re: Whinning sound from back of truck
Post by: huntnphool on January 29, 2013, 12:55:43 PM: Quote from: rudedawg1085 on January 29, 2013, 12:52:43 PM
Its a 2006 F-150 XF4 5.4 triton. Yea im positive its come from the diff case. I threw it up on jacks and had my buddy step on the gas as i put my ear up to the diff case ;) maybe not the smartest idea....

the sound dosent change when i turn
Ive heard that sound before, kinda sounds like $$$$$$$$$$$$$$$$$ going down the road?
Title: Re: Whinning sound from back of truck
Post by: gaddy on January 29, 2013, 01:04:27 PM: do the jack test again & use a small piece of hose with one end up to your good ear & try to pin point the whine. is there a dust cover on the pinion yoke? seen those get bent by a kicked up rock. & still could be bearing even if the yoke is tight. also seed dry u joints squeell & resonate.??
Title: Re: Whinning sound from back of truck
Post by: JimmyHoffa on January 29, 2013, 01:08:58 PM: A guy I know had something like this. It was a differential pin. It got loose and would make a whinning noise. The faster the truck went the worse it got. Never saw metal shavings in the case. One day the pin finally dropped while the truck was in motion and completely destroyed the rear diff internals. Locked it up too. The tow truck had to get creative to load it up.
Title: Re: Whinning sound from back of truck
Post by: Woodchuck on January 29, 2013, 01:10:56 PM: Quote from: huntnphool on January 29, 2013, 12:55:43 PM
Quote from: rudedawg1085 on January 29, 2013, 12:52:43 PM
Its a 2006 F-150 XF4 5.4 triton. Yea im positive its come from the diff case. I threw it up on jacks and had my buddy step on the gas as i put my ear up to the diff case ;) maybe not the smartest idea....

the sound dosent change when i turn
Ive heard that sound before, kinda sounds like $$$$$$$$$$$$$$$$$ going down the road?
:yeah:
Title: Re: Whinning sound from back of truck
Post by: Austrian Hunter on January 29, 2013, 01:15:57 PM: I had a whining/grinding noise from the differential case on my 2004 F-150 and it took them a while to find the problem. It was actually a computer chip sending the message to go into four wheel drive but then retract because the truck was set in two wheel drive, it was a $54 part and it took them two days to find :bash: :bash:
Title: Re: Whinning sound from back of truck
Post by: NateR on January 29, 2013, 11:59:50 PM: Had the same deal last year...turned out to be an axle bearing.
Title: Re: Whinning sound from back of truck
Post by: rudedawg1085 on January 30, 2013, 02:01:41 PM: Quote from: Austrian Hunter on January 29, 2013, 01:15:57 PM
I had a whining/grinding noise from the differential case on my 2004 F-150 and it took them a while to find the problem. It was actually a computer chip sending the message to go into four wheel drive but then retract because the truck was set in two wheel drive, it was a $54 part and it took them two days to find :bash: :bash:

Thats good info to know, thank you.
Title: Re: Whinning sound from back of truck
Post by: CamoDup on February 02, 2013, 02:02:35 PM: Ever find out what it was? My wife's 4runner has a whine also and I can't figure out what it is!
Title: Re: Whinning sound from back of truck
Post by: coachcw on February 05, 2013, 01:11:18 PM: If the tone changes off and on the gas it's typically pinion bearings , constant noise is often a side carrier bearing . axle bearings with often show leakage or play when they get worse.
Title: Re: Whinning sound from back of truck
Post by: Heredoggydoggy on February 05, 2013, 01:28:25 PM: Quote from: tshoote30 on January 29, 2013, 10:42:38 AM
Quote from: pianoman9701 on January 29, 2013, 09:17:43 AM
Yes, I've had this. I ran over my first wife, her dress got wrapped around the rear axle, and the whining didn't stop for, oh, about 3/4 of a mile. The same thing will happen if a liberal gets stuck there, except the whine will be a much higher pitch. I hope this was helpful. :tup:

:chuckle: :chuckle: :chuckle: :chuckle:

Mine turned out to be a liberal, but the whine came from the FRONT axle...for some reason!
Title: Re: Whinning sound from back of truck
Post by: rudedawg1085 on February 06, 2013, 08:44:34 AM: Yea i got it back last night, It was the pinion bearing, i had it replaced for $450, includes tax, parts, and labor. Not to expensive, but with the tax return its no biggy, She runs like a champ again now. Thanks everyone for the help!
Title: Re: Whinning sound from back of truck
Post by: rudedawg1085 on February 06, 2013, 08:59:39 AM: which reminds me to ask, is $450 a good price?? it sounded good to me at the time, but maybe thats casue in my mind i was thinking it would be a $1000 fix
Title: Re: Whinning sound from back of truck
Post by: Woodchuck on February 06, 2013, 09:01:04 AM: Sounds fair to me. .02
Title: Re: Whinning sound from back of truck
Post by: Heredoggydoggy on February 06, 2013, 10:01:02 AM: Sounds more than fair to me--That's a pretty big job... :twocents:
Title: Re: Whinning sound from back of truck
Post by: Mudman on February 06, 2013, 10:02:36 AM: Very cheap. I know another who had this problem too, 2007 f150. HMMM?