Transmission vibration

Blue Beast · 02-26-2002, 02:49 PM

When I get my stang up to about 80 to 85 I get really nasty vibrations in my trans....has anyone else ever experienced this...if so what did you do about it?

7000rpmisheaven · 02-26-2002, 03:07 PM

could be u-joints. Other people here would know better than I would. Its just an idea.

joe4speed · 02-26-2002, 04:56 PM

Does it happen at a certain rpm or only at 80-85?
Mine did that and I replaced the driveshaft with an aluminum one, and that solved it!

Blue Beast · 02-26-2002, 04:58 PM

No...I ahve an aluminum driveshaft already....so it has to be something else. Thanks though....

Ponycar_302 · 02-26-2002, 05:15 PM

I had the same problem too. I replaced the driveshaft with an aluminum one, but it was a day late and a dollar short. My tranny is hosed now. Since you've already replaced it, check the bolts. Also check the transmission bolts. I don't know what the problem is, but that's what I'd do before anything else.

jerrys84 · 02-26-2002, 05:16 PM

does it do it coasting, under power or ???

Blue Beast · 02-26-2002, 05:18 PM

Yeah... I will definitely check the bolts first...Whatever it is it feels like crap.

Blue Beast · 02-26-2002, 05:19 PM

It did it under power first...then it continued as I clutched it...it didn't stop until I downshifted.

Dog5ohfun · 02-26-2002, 10:34 PM

You might want to get a new harmonic balancer. Mine did it a few years ago and I changed the driveshaft and it didn't help. I put on a Ford Motorsport harmonic balancer and the problem was solved. Hope this helps.

Hozer 88GTConv · 02-26-2002, 10:44 PM

Had the exact same problem about three weeks ago. Minor vibrations became very apparent under stress and high speed. I would look at my Pro 5.0 shifter knob in disbelief. Anyway, I dropped my driveshaft and found my U-Joints completely shot. One bearing had cracked. Fortunately, no harm done. Got the "good" ones from Napa with the grease fitting on 'em. Hope this helps...good luck.

joe4speed · 02-27-2002, 12:56 AM

so it still vibrates at 85 even when the clutch is in and rpms are down?

When I put my alum driveshaft in, the damn bolts kept coming loose, check em!

joe4speed · 02-27-2002, 12:58 AM

also try rotating your driveshaft 180 degrees.

whiterod · 02-27-2002, 09:16 AM

i tell you what bluebeast my car is doing the same thing with the clutch in or out. and mine didn't start until i put a centerforce dual friction clutch. i turned the flywheel at a local auto part shop and was either thinking that is was from a warped flywheel or the centerforce. A few people having centerforces told me this is a common problem. I hope not, i paid alot for that thing.

Blue Beast · 02-27-2002, 09:30 AM

Yeah...I've got the dual friction clutch too...Maybe I'll have to scrap it for something different...First though..I'm gonna make sure it's not the bolts or a drive shaft issue. Thanks you guys this has been very enlightening.

theforce · 02-27-2002, 12:20 PM

Had a bad vibration on my blower car several years ago. Checked out driveshaft, yokes and even swapped driveshaft (installed alum). Checked out clutch and changed clutch (went from Dual Fric. to Motorsport). Still didn't fix the problem. Bought a SFI balancer and pulled the factory balancer. Found the snout on the stock balancer had a hairline crack. Replaced balancer and problem was resolved. If you have any mods on a Stang I would buy a SFI balancer anyway. Stock balancers a junk in a performance application. After I had this problem several Mustang owners with semi to highly modded cars have had the same problems. The Force

Shogun · 03-02-2002, 02:11 PM

I thought I was the only one with that exact same problem. The vibration would start @75mph in fifth gear and continue to about 85mph or so. Waht I found out was the WC T-5 has a sleeve in the tail shaft where your driveshaft rides on and over time it will wear and create slop. I replaced that sleve and the problem went away. But now I have a trem 3350 with alm drive. hope that helps.

02-26-2002, 02:49 PM	#1
Blue Beast Registered Member Join Date: Jul 2001 Location: New Jersey Posts: 47	Transmission vibration When I get my stang up to about 80 to 85 I get really nasty vibrations in my trans....has anyone else ever experienced this...if so what did you do about it? __________________ Midnight Blue 89 GT... 306... ported and polished aluminum GT40's, MAC Long tubes, MAC power pipe, Flowmaster 2 1/2 cat back, GT40 intake with ported upper and lower, B-Cam, 24lb injectors, 77mm Mass Air, 65mm TB. World Class T5, 3.73's, Centerforce Dual Friction, FRP aluminum radiator, Victor Jr water pump, Pro 5.0 shifter, Crane adjustable FPR, 255lph fuel pump

02-26-2002, 03:07 PM	#2
7000rpmisheaven Registered Member Join Date: Nov 2001 Location: germantown MD Posts: 283	Just an idea could be u-joints. Other people here would know better than I would. Its just an idea. __________________ 85 GT 4bbl roller cam 2 ch. Flowmasters, O/R H-pipe Performer intake and carb milodon water pump, FMS 9mm wires, aluminum driveshaft, king cobra clutch

02-26-2002, 04:56 PM	#3
joe4speed He said Member...heh, heh Join Date: Sep 1999 Location: Jupiter, Florida U.S.A. Posts: 3,718	Does it happen at a certain rpm or only at 80-85? Mine did that and I replaced the driveshaft with an aluminum one, and that solved it! __________________ *Joe!* 1988 GT, 13.58@101mph Check out my listing! Click here! Or my website:www.joe4speed.com

02-26-2002, 04:58 PM	#4
Blue Beast Registered Member Join Date: Jul 2001 Location: New Jersey Posts: 47	No...I ahve an aluminum driveshaft already....so it has to be something else. Thanks though.... __________________ Midnight Blue 89 GT... 306... ported and polished aluminum GT40's, MAC Long tubes, MAC power pipe, Flowmaster 2 1/2 cat back, GT40 intake with ported upper and lower, B-Cam, 24lb injectors, 77mm Mass Air, 65mm TB. World Class T5, 3.73's, Centerforce Dual Friction, FRP aluminum radiator, Victor Jr water pump, Pro 5.0 shifter, Crane adjustable FPR, 255lph fuel pump

02-26-2002, 05:15 PM	#5
Ponycar_302 Registered Member Join Date: Feb 2002 Location: Pennsylvania Posts: 120	I had the same problem too. I replaced the driveshaft with an aluminum one, but it was a day late and a dollar short. My tranny is hosed now. Since you've already replaced it, check the bolts. Also check the transmission bolts. I don't know what the problem is, but that's what I'd do before anything else. __________________ I'm sofa king we tall did.

02-26-2002, 05:16 PM	#6
jerrys84 Registered Member Join Date: Feb 2002 Location: minnesota Posts: 129	does it do it coasting, under power or ??? __________________ 91 LX 'work in progress' previous stangs; lightly modded 84GT 81 2.3 converted to 302 auto

02-26-2002, 05:18 PM	#7
Blue Beast Registered Member Join Date: Jul 2001 Location: New Jersey Posts: 47	Yeah... I will definitely check the bolts first...Whatever it is it feels like crap. __________________ Midnight Blue 89 GT... 306... ported and polished aluminum GT40's, MAC Long tubes, MAC power pipe, Flowmaster 2 1/2 cat back, GT40 intake with ported upper and lower, B-Cam, 24lb injectors, 77mm Mass Air, 65mm TB. World Class T5, 3.73's, Centerforce Dual Friction, FRP aluminum radiator, Victor Jr water pump, Pro 5.0 shifter, Crane adjustable FPR, 255lph fuel pump

02-26-2002, 05:19 PM	#8
Blue Beast Registered Member Join Date: Jul 2001 Location: New Jersey Posts: 47	It did it under power first...then it continued as I clutched it...it didn't stop until I downshifted. __________________ Midnight Blue 89 GT... 306... ported and polished aluminum GT40's, MAC Long tubes, MAC power pipe, Flowmaster 2 1/2 cat back, GT40 intake with ported upper and lower, B-Cam, 24lb injectors, 77mm Mass Air, 65mm TB. World Class T5, 3.73's, Centerforce Dual Friction, FRP aluminum radiator, Victor Jr water pump, Pro 5.0 shifter, Crane adjustable FPR, 255lph fuel pump

02-26-2002, 10:34 PM	#9
Dog5ohfun Registered Member Join Date: Feb 2002 Location: Arlington, Washington Posts: 92	Another possible fix You might want to get a new harmonic balancer. Mine did it a few years ago and I changed the driveshaft and it didn't help. I put on a Ford Motorsport harmonic balancer and the problem was solved. Hope this helps.

02-26-2002, 10:44 PM	#10
Hozer 88GTConv Registered Member Join Date: Feb 2002 Location: Jacksonville, FL Posts: 706	Had the same problem... Had the exact same problem about three weeks ago. Minor vibrations became very apparent under stress and high speed. I would look at my Pro 5.0 shifter knob in disbelief. Anyway, I dropped my driveshaft and found my U-Joints completely shot. One bearing had cracked. Fortunately, no harm done. Got the "good" ones from Napa with the grease fitting on 'em. Hope this helps...good luck. __________________ 1988 GT Convertible 331 10:1 TW heads, GT-40 intake, MSD, TRW flattops, B Cam w/ 1.7's, MAC exhaust, 24's, 70 TB, 76 MAF, 3.73's, Pro 5.0, Koni's, Anderson PMS, Wideband 02, yatta, yatta... One week with new motor, two speeding tickets...joy

02-27-2002, 12:56 AM	#11
joe4speed He said Member...heh, heh Join Date: Sep 1999 Location: Jupiter, Florida U.S.A. Posts: 3,718	so it still vibrates at 85 even when the clutch is in and rpms are down? When I put my alum driveshaft in, the damn bolts kept coming loose, check em! __________________ *Joe!* 1988 GT, 13.58@101mph Check out my listing! Click here! Or my website:www.joe4speed.com

02-27-2002, 12:58 AM	#12
joe4speed He said Member...heh, heh Join Date: Sep 1999 Location: Jupiter, Florida U.S.A. Posts: 3,718	also try rotating your driveshaft 180 degrees. __________________ *Joe!* 1988 GT, 13.58@101mph Check out my listing! Click here! Or my website:www.joe4speed.com

02-27-2002, 09:16 AM	#13
whiterod Registered Member Join Date: Sep 2001 Location: zachary, la Posts: 73	i tell you what bluebeast my car is doing the same thing with the clutch in or out. and mine didn't start until i put a centerforce dual friction clutch. i turned the flywheel at a local auto part shop and was either thinking that is was from a warped flywheel or the centerforce. A few people having centerforces told me this is a common problem. I hope not, i paid alot for that thing. __________________ GT-40X(58cc)heads, cobra upper&lower, FMS 65mm TB, 75mm Bullet, 24# injectors, 190 lph fuel pump, moroso cold air intake, BBK 1 5/8 equal length headers, flowmaster cat back, 1.7 cobra rockers, crane 2031, T5Z gear box, centerforce dual friction, mcleod bullet proof bellhousing, 3.55 gears, hurst billet shifter with over 193,000 miles. thanks to all who contributed

02-27-2002, 09:30 AM	#14
Blue Beast Registered Member Join Date: Jul 2001 Location: New Jersey Posts: 47	Yeah...I've got the dual friction clutch too...Maybe I'll have to scrap it for something different...First though..I'm gonna make sure it's not the bolts or a drive shaft issue. Thanks you guys this has been very enlightening. __________________ Midnight Blue 89 GT... 306... ported and polished aluminum GT40's, MAC Long tubes, MAC power pipe, Flowmaster 2 1/2 cat back, GT40 intake with ported upper and lower, B-Cam, 24lb injectors, 77mm Mass Air, 65mm TB. World Class T5, 3.73's, Centerforce Dual Friction, FRP aluminum radiator, Victor Jr water pump, Pro 5.0 shifter, Crane adjustable FPR, 255lph fuel pump

02-27-2002, 12:20 PM	#15
theforce Registered Member Join Date: Jun 2000 Location: Deer Park (Houston), Texas Posts: 39	Vibration Had a bad vibration on my blower car several years ago. Checked out driveshaft, yokes and even swapped driveshaft (installed alum). Checked out clutch and changed clutch (went from Dual Fric. to Motorsport). Still didn't fix the problem. Bought a SFI balancer and pulled the factory balancer. Found the snout on the stock balancer had a hairline crack. Replaced balancer and problem was resolved. If you have any mods on a Stang I would buy a SFI balancer anyway. Stock balancers a junk in a performance application. After I had this problem several Mustang owners with semi to highly modded cars have had the same problems. The Force __________________ 86 Capri "Don't Laugh It's Turbocharged!!!"

03-02-2002, 02:11 PM	#16
Shogun Registered Member Join Date: Feb 2002 Location: Nebraska Posts: 86	Vibration I thought I was the only one with that exact same problem. The vibration would start @75mph in fifth gear and continue to about 85mph or so. Waht I found out was the WC T-5 has a sleeve in the tail shaft where your driveshaft rides on and over time it will wear and create slop. I replaced that sleve and the problem went away. But now I have a trem 3350 with alm drive. hope that helps. __________________ Proud RHC member #99 1990 Mustang GT Trick Flow heads,F303,Mac cold air,FMS 65mm tb,73mm ma,FMS 1.6,GT-40 intake,MSD igintion,NOS Big Shot@150,Mac equal shorties,Mac h-pipe,American Thunder flows,Centerforce dual friction,TTC 3550,alm drive shaft, 3.73's, HPM subframes, k-member brace, strut tower brace.. amongst others.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Vibration Problem	RDMumfts Stang	Windsor Power	10	03-23-2003 07:04 PM
2003 Cobra Transmission	Silver Cobra	Modular Madness	2	08-30-2002 11:39 PM
Vibration thru vehicle when accelerator is pressed	race1now	Windsor Power	1	01-22-2001 12:28 AM
Vibration	Desperado	Windsor Power	5	01-14-2001 10:57 PM