gear whine???

06SuperStang · June 3rd, 2008, 11:50 AM

i just recently had a set of frrp 3.73 gears installed in my 06 GT (auto) and i wanted to know what was causing the gear whine whenever i let off the throttle then about 35mph it stops. i always thought you can hear gear whine when your on the throttle not when your slowing down. can anyone tell me whats causing this? thanks

07 STROKER · June 3rd, 2008, 12:00 PM

improper backlash???

06SuperStang · June 3rd, 2008, 12:06 PM

thats what i was told i just wanted to make sure. is this an easy fix?

07 STROKER · June 3rd, 2008, 12:08 PM

i wouldint touch gears myself...and i do all my own wrenching...take it to a shop...if you havent broke the gears in too bad they might be able to adjust the backlash.

06SuperStang · June 3rd, 2008, 12:12 PM

i only have about 180 miles on them

06SuperStang · June 3rd, 2008, 12:33 PM

would it be to much or not enough backlash?

07 STROKER · June 3rd, 2008, 12:36 PM

I think...not enough....dont quote me though..like i said i dont mess with gears.

06SuperStang · June 3rd, 2008, 12:42 PM

ok thanks

07 STROKER · June 3rd, 2008, 12:44 PM

n osweat

Emay · June 3rd, 2008, 02:16 PM

Super stang, you have gotten the dreaded coast whine. It's not only a backlash issue. The same sort of whine can occur on improper bearing preload. You may want to ask your installer exactly how he went about the preload on them, sometimes that is a difficult conversation because immediately your placing blame on there skills. Wether it's a lack of backlash issue, or a preload issue, you'll get a coast whine.

Your installer is likely to say, "I don't preload the bearing via torque spec, I do it by feel". This is common, but these s197 rear ends are finicky and will make noise in both scenerios. Feel out your installer, spec is 16-26 in lbs.

qwik48r · June 3rd, 2008, 04:14 PM

dont feel bad man, i've got a bad coast whine too... Motives are coming out veryyyyy soon....

06SuperStang · June 9th, 2008, 05:10 PM

got the car back today from the intaller and he told he h made some changes with the backlash issue but it still has a lil coast whine and now it has a slight vibebration when i turn to the right then i stops when the car straightns up. anyone know the cause of this?

TheUNZippee! · June 9th, 2008, 05:16 PM

I have the same issue on mine, Super. My installer told me it was improper backlash or bearing preload, as Emay said. Fortunately he's a stand up guy, and I don't have to worry about playing games with him to get it right.

mustangrebuilder · June 9th, 2008, 05:20 PM

yeah emay is right about what could be wrong with it.

but if they are going to fix it, have them check if there is any wear on them.

you may only have 180 miles on them but that could still mess them up bad enough that you cant use them

06SuperStang · June 9th, 2008, 05:25 PM

i guess ill have to take it to ford and have them look at it

mustangrebuilder · June 9th, 2008, 05:47 PM

alot of ppl dont liek to mess with there own gears but i dont think that they are that hard to do, they do take time, but if somethign is wrong at least you know what you did.

if someone else did it, you have know idea what backlash, pre load, shims etc they used.

June 3rd, 2008, 11:50 AM	#1
06SuperStang Regular 2006 Mustang GT Join Date: Feb 2008 Location: Bloomington Tx Posts: 299 iTrader: 0 reviews	gear whine??? i just recently had a set of frrp 3.73 gears installed in my 06 GT (auto) and i wanted to know what was causing the gear whine whenever i let off the throttle then about 35mph it stops. i always thought you can hear gear whine when your on the throttle not when your slowing down. can anyone tell me whats causing this? thanks __________________ 2006 Mustang GT (Auto),FRPP Hot Rod Cams,Hooker Longtubes w/ Off Road X-Pipe,Stock Mufflers,TCI 3000 Stall,Delete Plates,C&L Racer CAI,Tuned By The Guys From American Muscle,FRPP 3.73's,Coast Line Full Length DriveShaft

June 3rd, 2008, 12:00 PM	#2
07 STROKER MM's resident Juice head 07 Mustang GT Join Date: Nov 2007 Location: PA Posts: 7,920 iTrader: 0 reviews	improper backlash??? __________________ The MGW short throw shifter Its not just a shifter...It's a lifestyle!

June 3rd, 2008, 12:06 PM	#3
06SuperStang Regular 2006 Mustang GT Join Date: Feb 2008 Location: Bloomington Tx Posts: 299 iTrader: 0 reviews	thats what i was told i just wanted to make sure. is this an easy fix? __________________ 2006 Mustang GT (Auto),FRPP Hot Rod Cams,Hooker Longtubes w/ Off Road X-Pipe,Stock Mufflers,TCI 3000 Stall,Delete Plates,C&L Racer CAI,Tuned By The Guys From American Muscle,FRPP 3.73's,Coast Line Full Length DriveShaft

June 3rd, 2008, 12:08 PM	#4
07 STROKER MM's resident Juice head 07 Mustang GT Join Date: Nov 2007 Location: PA Posts: 7,920 iTrader: 0 reviews	i wouldint touch gears myself...and i do all my own wrenching...take it to a shop...if you havent broke the gears in too bad they might be able to adjust the backlash. __________________ The MGW short throw shifter Its not just a shifter...It's a lifestyle!

June 3rd, 2008, 12:12 PM	#5
06SuperStang Regular 2006 Mustang GT Join Date: Feb 2008 Location: Bloomington Tx Posts: 299 iTrader: 0 reviews	i only have about 180 miles on them __________________ 2006 Mustang GT (Auto),FRPP Hot Rod Cams,Hooker Longtubes w/ Off Road X-Pipe,Stock Mufflers,TCI 3000 Stall,Delete Plates,C&L Racer CAI,Tuned By The Guys From American Muscle,FRPP 3.73's,Coast Line Full Length DriveShaft

June 3rd, 2008, 12:33 PM	#6
06SuperStang Regular 2006 Mustang GT Join Date: Feb 2008 Location: Bloomington Tx Posts: 299 iTrader: 0 reviews	would it be to much or not enough backlash? __________________ 2006 Mustang GT (Auto),FRPP Hot Rod Cams,Hooker Longtubes w/ Off Road X-Pipe,Stock Mufflers,TCI 3000 Stall,Delete Plates,C&L Racer CAI,Tuned By The Guys From American Muscle,FRPP 3.73's,Coast Line Full Length DriveShaft

June 3rd, 2008, 12:36 PM	#7
07 STROKER MM's resident Juice head 07 Mustang GT Join Date: Nov 2007 Location: PA Posts: 7,920 iTrader: 0 reviews	I think...not enough....dont quote me though..like i said i dont mess with gears. __________________ The MGW short throw shifter Its not just a shifter...It's a lifestyle!

June 3rd, 2008, 12:42 PM	#8
06SuperStang Regular 2006 Mustang GT Join Date: Feb 2008 Location: Bloomington Tx Posts: 299 iTrader: 0 reviews	ok thanks __________________ 2006 Mustang GT (Auto),FRPP Hot Rod Cams,Hooker Longtubes w/ Off Road X-Pipe,Stock Mufflers,TCI 3000 Stall,Delete Plates,C&L Racer CAI,Tuned By The Guys From American Muscle,FRPP 3.73's,Coast Line Full Length DriveShaft

June 3rd, 2008, 12:44 PM	#9
07 STROKER MM's resident Juice head 07 Mustang GT Join Date: Nov 2007 Location: PA Posts: 7,920 iTrader: 0 reviews	n osweat __________________ The MGW short throw shifter Its not just a shifter...It's a lifestyle!

June 3rd, 2008, 02:16 PM	#10
Emay May 08 ROTM 2008 Audi S6 Join Date: Oct 2006 Location: S. Elgin Posts: 6,685 iTrader: 3 reviews	Super stang, you have gotten the dreaded coast whine. It's not only a backlash issue. The same sort of whine can occur on improper bearing preload. You may want to ask your installer exactly how he went about the preload on them, sometimes that is a difficult conversation because immediately your placing blame on there skills. Wether it's a lack of backlash issue, or a preload issue, you'll get a coast whine. Your installer is likely to say, "I don't preload the bearing via torque spec, I do it by feel". This is common, but these s197 rear ends are finicky and will make noise in both scenerios. Feel out your installer, spec is 16-26 in lbs. __________________ FLICKR Unique Imagery

June 3rd, 2008, 04:14 PM	#11
qwik48r MM Fanatic alotta shit no fat girls fast Join Date: Jan 2008 Location: in the woods Posts: 3,681 iTrader: 1 reviews	dont feel bad man, i've got a bad coast whine too... Motives are coming out veryyyyy soon.... __________________ mind your business what i drive... i'm on a fucking mustang forum. qwik's build

June 9th, 2008, 05:10 PM	#12
06SuperStang Regular 2006 Mustang GT Join Date: Feb 2008 Location: Bloomington Tx Posts: 299 iTrader: 0 reviews	got the car back today from the intaller and he told he h made some changes with the backlash issue but it still has a lil coast whine and now it has a slight vibebration when i turn to the right then i stops when the car straightns up. anyone know the cause of this? __________________ 2006 Mustang GT (Auto),FRPP Hot Rod Cams,Hooker Longtubes w/ Off Road X-Pipe,Stock Mufflers,TCI 3000 Stall,Delete Plates,C&L Racer CAI,Tuned By The Guys From American Muscle,FRPP 3.73's,Coast Line Full Length DriveShaft

June 9th, 2008, 05:20 PM	#14
mustangrebuilder Enthusiast Join Date: Sep 2006 Posts: 991 iTrader: 0 reviews	yeah emay is right about what could be wrong with it. but if they are going to fix it, have them check if there is any wear on them. you may only have 180 miles on them but that could still mess them up bad enough that you cant use them

June 9th, 2008, 05:25 PM	#15
06SuperStang Regular 2006 Mustang GT Join Date: Feb 2008 Location: Bloomington Tx Posts: 299 iTrader: 0 reviews	i guess ill have to take it to ford and have them look at it __________________ 2006 Mustang GT (Auto),FRPP Hot Rod Cams,Hooker Longtubes w/ Off Road X-Pipe,Stock Mufflers,TCI 3000 Stall,Delete Plates,C&L Racer CAI,Tuned By The Guys From American Muscle,FRPP 3.73's,Coast Line Full Length DriveShaft

June 9th, 2008, 05:47 PM	#16
mustangrebuilder Enthusiast Join Date: Sep 2006 Posts: 991 iTrader: 0 reviews	alot of ppl dont liek to mess with there own gears but i dont think that they are that hard to do, they do take time, but if somethign is wrong at least you know what you did. if someone else did it, you have know idea what backlash, pre load, shims etc they used.

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