03 cobra tranny slipping

OcOnnor220 · January 3rd, 2011, 05:29 PM

After weeks of not knowing why my cobra is going nowhere under hard throttle (not to mention just about every retard under the sun giving me what turned out to be BULLSHIT reasons for it, like a slipping clutch or bad plugs) I realize its the tranny. It shifts fine and strong but pedal to the metal in any gear...the reves dance, the blower spins up and the engine fires but the car goea nowhere. Understandably I cant even begin to work this out with jack stands (the first person who tells me I can fix thia myself can freakin kiss my ass) my question is doea anybody familiar with any part of the tremec t-56 that would be causing this? I mean the power is there but the tranny wont turn it into torque. How big of a bill am I looking at here?

WhiteVenom · January 3rd, 2011, 07:44 PM

It seriously goes no where at all? I never heard of this in my life. Sounds so much like a belt slip or toasted clutch. Theres nothing inside your trans that can cause this that i know of. Maybe a broken input shaft or maybe someone turn the trans out and took everything out of it and put it back in empty...seriously.

Whats so hard about jackstands and fixing a trans?

Also since no one knows what your problem is no one can tell you how much it will be.

Lefty · January 3rd, 2011, 09:36 PM

Sounds like a clutch to me.

OcOnnor220 · January 4th, 2011, 08:14 AM

#1, I have no experience removing a transmission and im not about to start with my only means of transportation..#2 I dont have tools or a tranny jack or room to work, and finally the car gives a jerk like it wants to propel foward but then the rpms slip at 4000 and the car maintains its speed. The belt is tight and free of cracks..its not the belt. And I adjusted the clutch, which by the way is taking up fine and not giving me any trouble.

HMUSN · January 4th, 2011, 08:27 AM

Your foot is broken.

Or your car simply may make too much power for the clutch plate to handle.. The only thing in a manual transmission that could slip is the clutch. If it were actual transmission gearing issues you would be hearing pops and grinds. Since you said yourself it only happens under load it leads me to believe it is clutch related as well. If you already adjusted the clutch and it still feels the way it does odds are it needs replacing. The cost of having someone do it for you (including TOB and all parts) should run under $500 in most places. Good luck diagnosing if you feel this is not your issue.

Lefty · January 4th, 2011, 09:12 AM

zinc-vert02 · January 4th, 2011, 09:20 AM

is it poping in neutral?

( poping out of gear)

03SonicBoom · January 4th, 2011, 09:53 AM

Originally Posted by OcOnnor220

#1, I have no experience removing a transmission and im not about to start with my only means of transportation..#2 I dont have tools or a tranny jack or room to work, and finally the car gives a jerk like it wants to propel foward but then the rpms slip at 4000 and the car maintains its speed. The belt is tight and free of cracks..its not the belt. And I adjusted the clutch, which by the way is taking up fine and not giving me any trouble.

Just because you adjust the clutch pedal doesn't mean it's not the clutch. Since you have no experience with removing a transmission, I doubt you have ever replaced a clutch and I believe you're lumping these two things into "the transmission". There's much more to a clutch than a simple pedal inside the car.

When I thought the clutch in my truck was slipping it was very easy to determine. I brought the bumper up to a tree, put it in 4th gear, and released the clutch. Sure enough, the truck kept running. If the clutch wasn't slipping, the engine would have died. You can try the same thing, but instead of a tree I suggest you get some good wheel chocks. Starting in a higher won't produce enough power to run them over and it'll kill the engine if your clutch is fine.

Uberstang1 · January 6th, 2011, 09:10 AM

This is more than likley a failing clutch, just because it doesn't slip at all rmps and speeds and throttle doesn't mean its no bad, get in the car cruising bout 20mpg and put it in 4th or 5th gear and give it gas if it just revs up and slips the clutch is bad.

'97'Cobra · January 6th, 2011, 01:56 PM

well my friend its time to get some extensions and sockets because the clutch needs to come out. Its not hard just time consuming

01Sportchic · January 6th, 2011, 02:15 PM

I agree with everyone else...Clutch.

There is absolutely no way any part of your transmission would slip unless you have an auto (and obviously you don't). I would think that if the input shaft were broken it wouldn't go into gear/it wouldn't move. Unless the splines were stripped off the shaft, but I'm sure a weird noise/chatter/vibration would come from the transmission if that were to happen.

Does the car smell like burning brakes/clutch after heavy driving?

Blown284 · January 6th, 2011, 02:21 PM

+1 Sportchic, I've seen some stripped input shafts come of out muncie's and they always make noise like you said. OP, its clutch time.

January 3rd, 2011, 09:36 PM	#3
Lefty Resident DJ '01 Cobra Vert. Join Date: Jun 2007 Location: Mechanicsburg, PA Posts: 28,699 iTrader: 12 reviews	Sounds like a clutch to me. __________________ 2008 Acura TL Type-S (the daily) 2006 Yamaha R6 50th Anniversary Edition (the other toy)

January 4th, 2011, 08:27 AM	#5
HMUSN Doc 1986 SVO 48.47@ 12.58 Join Date: Nov 2006 Posts: 37,050 iTrader: 11 reviews	Your foot is broken. Or your car simply may make too much power for the clutch plate to handle.. The only thing in a manual transmission that could slip is the clutch. If it were actual transmission gearing issues you would be hearing pops and grinds. Since you said yourself it only happens under load it leads me to believe it is clutch related as well. If you already adjusted the clutch and it still feels the way it does odds are it needs replacing. The cost of having someone do it for you (including TOB and all parts) should run under $500 in most places. Good luck diagnosing if you feel this is not your issue. __________________

January 4th, 2011, 09:12 AM	#6
Lefty Resident DJ '01 Cobra Vert. Join Date: Jun 2007 Location: Mechanicsburg, PA Posts: 28,699 iTrader: 12 reviews	__________________ 2008 Acura TL Type-S (the daily) 2006 Yamaha R6 50th Anniversary Edition (the other toy)

January 4th, 2011, 09:20 AM	#7
zinc-vert02 Bringing Yellow Back 2002 mustang gt 12.2 at 117 Join Date: Apr 2010 Location: WISCONSIN Posts: 9,963 iTrader: 1 reviews	is it poping in neutral? ( poping out of gear) __________________ SOON TO BE 5.4 3V POWERD WITH A ROUSH CHARGER HELPING IT BAMA Performance Drag Team Member #4

January 6th, 2011, 09:10 AM	#9
Uberstang1 Regular 1997 Mustang GT Join Date: Jan 2011 Location: Wilkes-Barre PA Posts: 71 iTrader: 0 reviews	This is more than likley a failing clutch, just because it doesn't slip at all rmps and speeds and throttle doesn't mean its no bad, get in the car cruising bout 20mpg and put it in 4th or 5th gear and give it gas if it just revs up and slips the clutch is bad. __________________ 97 GT, 4v swap,procharged,longtubes,tubular front suspension, team z rear suspension,4.10s moser 31s, to much to list.

January 3rd, 2011, 05:29 PM	#1
OcOnnor220 Enthusiast Join Date: Oct 2006 Posts: 520 iTrader: 0 reviews	03 cobra tranny slipping After weeks of not knowing why my cobra is going nowhere under hard throttle (not to mention just about every retard under the sun giving me what turned out to be BULLSHIT reasons for it, like a slipping clutch or bad plugs) I realize its the tranny. It shifts fine and strong but pedal to the metal in any gear...the reves dance, the blower spins up and the engine fires but the car goea nowhere. Understandably I cant even begin to work this out with jack stands (the first person who tells me I can fix thia myself can freakin kiss my ass) my question is doea anybody familiar with any part of the tremec t-56 that would be causing this? I mean the power is there but the tranny wont turn it into torque. How big of a bill am I looking at here?

January 3rd, 2011, 07:44 PM	#2
WhiteVenom MM Fanatic 99 Cobra :p 12.36@119.35 Join Date: Oct 2010 Location: Lapeer Posts: 4,541 iTrader: 0 reviews	It seriously goes no where at all? I never heard of this in my life. Sounds so much like a belt slip or toasted clutch. Theres nothing inside your trans that can cause this that i know of. Maybe a broken input shaft or maybe someone turn the trans out and took everything out of it and put it back in empty...seriously. Whats so hard about jackstands and fixing a trans? Also since no one knows what your problem is no one can tell you how much it will be. __________________ MM COBRA CLUB #80 SRA SWAP WRITE UP!

January 4th, 2011, 08:14 AM	#4
OcOnnor220 Enthusiast Join Date: Oct 2006 Posts: 520 iTrader: 0 reviews	#1, I have no experience removing a transmission and im not about to start with my only means of transportation..#2 I dont have tools or a tranny jack or room to work, and finally the car gives a jerk like it wants to propel foward but then the rpms slip at 4000 and the car maintains its speed. The belt is tight and free of cracks..its not the belt. And I adjusted the clutch, which by the way is taking up fine and not giving me any trouble.

January 6th, 2011, 02:15 PM	#11
01Sportchic Premium Member 1997 Mustang Cobra 11.87@115.97 Join Date: Dec 2010 Location: Lake Worth, FL Posts: 880 iTrader: 1 reviews	I agree with everyone else...Clutch. There is absolutely no way any part of your transmission would slip unless you have an auto (and obviously you don't). I would think that if the input shaft were broken it wouldn't go into gear/it wouldn't move. Unless the splines were stripped off the shaft, but I'm sure a weird noise/chatter/vibration would come from the transmission if that were to happen. Does the car smell like burning brakes/clutch after heavy driving? __________________ Danielle D. Perez Photography

January 6th, 2011, 02:21 PM	#12
Blown284 MM Fanatic 1966 Mustang Coupe Won't See The Track Join Date: Apr 2010 Location: The Devil's Porch Posts: 3,370 iTrader: 0 reviews	+1 Sportchic, I've seen some stripped input shafts come of out muncie's and they always make noise like you said. OP, its clutch time. __________________ Previous Rides 1997 Blown Cobra-Sold & Missed 2004 Lightning-Traded 2001 Turbo GT-Traded 1966 Mustang Coupe-Sold 2006 Audi A3-sold 1998 Bagged Silverado- Sold 1997 BMW AC Schnitzer 540i S5

Remove Advertisements Sponsored Links
Ford Mustang Forum Advertisement

Threads Similar to: 03 cobra tranny slipping
Thread	Thread Starter	Forum	Replies	Last Post
99 Chevy Blazer, tranny slipping	03_StangGuy	All Other Vehicles	3	March 17th, 2010 01:51 PM
tranny slipping	mm49271	V6 Mustangs	4	August 24th, 2008 03:23 PM
me with a slipping belt vs 03 cobra	sonicblue	Videos	9	September 5th, 2007 12:22 PM
Tranny cable slipping off of gear selector	OTreborO	5.0 Mustangs	0	May 9th, 2007 01:20 PM
Newbie question. 98 cobra with 99 cobra tranny...Speedo fix?	RoyalCars	Modular Mustangs	5	February 18th, 2007 10:17 AM

All times are GMT -4. The time now is 04:42 PM.
Contact Us - Modded Mustangs : Ford Mustang Forums - Privacy Statement - Top
Modded Mustangs is ©2005-2008, All Rights Reserved, And is Not Affiliated with Ford Motor Company. Forum is powered by vBulletin ©2000 - 2012, Jelsoft Ent. Ltd. & SEO by vBSEO 3.3.2 ©2009, Crawlability, Inc.