Ford Mustang GT 5 Speed Transmission,...

Ford Mustang GT 5 Speed Transmission, HELP.

Posted in the Blairsville Forum

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Since: Jul 10

Blairsville

#1 Aug 29, 2010
I have a Ford Mustang GT 5 speed manual transmission. It works well going 1st through 5th gears. Put it in reverse and when you ease the clutch out it jumps out of gear and grinds like crazy. It will NOT stay in reverse. Suggestions? Who in Blairsville or the surrounding area can fix a problem like this? Any help would be greatly appreciated!
answer

Warner Robins, GA

#2 Aug 29, 2010
Probably a bad synchronizer. Take it to Tommy Bell's garage over in Mineral Bluff. He is the best of the best when it comes to transmissions.
Alan

United States

#3 Aug 29, 2010
answer wrote:
Probably a bad synchronizer. Take it to Tommy Bell's garage over in Mineral Bluff. He is the best of the best when it comes to transmissions.
A synchro would only apply when putting the shifter into a gear while moving, it doesnt do anything while standing still such as when you would put the vehicle in reverse. For now you can simply hold it in reverse while backing & you should be OK - have you tried that? It sounds like your shifter may be bad or a bent shift fork. Also if you have an aftermarket shifter it could be out of adjustment.

Since: Jul 10

Blairsville

#4 Aug 29, 2010
Alan wrote:
<quoted text>
A synchro would only apply when putting the shifter into a gear while moving, it doesnt do anything while standing still such as when you would put the vehicle in reverse. For now you can simply hold it in reverse while backing & you should be OK - have you tried that? It sounds like your shifter may be bad or a bent shift fork. Also if you have an aftermarket shifter it could be out of adjustment.
Holding it in reverse worked a couple of times but not anymore. It just pops out of reverse and grinds until I get the clutch back in. Stock shifter, and I am the only owner and driver of this vehicle since it was new. Only 56,000 miles and I do not abuse it. 1st gear through 5th works great! Just not staying in reverse. I am hoping it can be adjusted. If not, I will have a short shifter installed for a shorter throw between gears. The high end aftermarket unit is adjustable for each gear and I would need someone that knows what they are doing to install and adjust it if the original shifter can not be adjusted. Any suggestions would be greatly appreciated!?

Since: Jul 10

Blairsville

#5 Aug 29, 2010
answer wrote:
Probably a bad synchronizer. Take it to Tommy Bell's garage over in Mineral Bluff. He is the best of the best when it comes to transmissions.
Thanks for the Tommy Bell referral! What ever is wrong with it, I like to get referrals!
Alan

United States

#6 Aug 29, 2010
Markie608 wrote:
<quoted text>
Holding it in reverse worked a couple of times but not anymore. It just pops out of reverse and grinds until I get the clutch back in. Stock shifter, and I am the only owner and driver of this vehicle since it was new. Only 56,000 miles and I do not abuse it. 1st gear through 5th works great! Just not staying in reverse. I am hoping it can be adjusted. If not, I will have a short shifter installed for a shorter throw between gears. The high end aftermarket unit is adjustable for each gear and I would need someone that knows what they are doing to install and adjust it if the original shifter can not be adjusted. Any suggestions would be greatly appreciated!?
Have you tried putting it in 5th then into reverse at all? That tranny is the "weak link" in a lot of Fords, I've had several (2 right now) that have the same tranny. One had the input shaft fail at approx 10K miles though another lasted 160K & was still going when I sold it but was close to failure at that point. The original shifters are not adjustable to the best of my knowledge.

“Skin a Floridian”

Since: Aug 09

Hiawassie

#7 Aug 29, 2010
Markie608 wrote:
<quoted text>
Thanks for the Tommy Bell referral! What ever is wrong with it, I like to get referrals!
Type in "ask a mechanic" in your search bar, Look for (free)... Or (ford)..
Floridian

Casselberry, FL

#8 Aug 29, 2010
I had a 66 mustang 289 back in 1969 and it started just grinding when I tried to put in reverse. Took it to my mechanic and he said it had a bent shifting arm. He fixed it about 10 minutes.

“Do you wanna? Do you?”

Since: Jul 10

I'm at the end of the blacktop

#9 Aug 29, 2010
Floridian wrote:
I had a 66 mustang 289 back in 1969 and it started just grinding when I tried to put in reverse. Took it to my mechanic and he said it had a bent shifting arm. He fixed it about 10 minutes.
A T5 is nowhere near the trans that was in your '66. T5s don't have external shift arms. I can't diagnose without seeing the car in question. However, a couple things come to mind. Out of adjustment shifter, bent shift fork, clutch adjustment would probably be good things to check first. If that doesn't work you could try the guys at ADHD Motorsports in Blairsville. Two of the guys there are die hard Ford guys.

“*Reformed Flatlander*”

Since: Feb 08

Talking Rock, Georgia, USA

#10 Aug 30, 2010
Slowpok wrote:
<quoted text>Type in "ask a mechanic" in your search bar, Look for (free)... Or (ford)..
Hopefully DIY Network would be one of the top returns you'd get:

http://boards.diynetwork.com/eve/forums/a/frm...

Been following them for "a number" of years after discovering them via HGTV (the ages old Home and Garden).. Not a super active listserv, but those responses given to questions asked have been intelligent, not to mention respectful overall..

Maybe check out MyPowerblock, too.. See if your car somehow fits their description of a "power block" such that it falls under what they chat about on there.. If it doesn't quite fit, maybe you'll still find someone on there that you can approach by private message (PM) or via site links members attach to their public profiles..

Just thinking out loud..:)
~

Since: Jul 10

Blairsville

#11 Sep 3, 2010
I put the Mustang in the shop this morning to have the transmission opened up. I will post what was indeed wrong when it is repaired. Thanks everyone for the ideas and input!

“Do you wanna? Do you?”

Since: Jul 10

I'm at the end of the blacktop

#12 Sep 3, 2010
Markie608 wrote:
I put the Mustang in the shop this morning to have the transmission opened up. I will post what was indeed wrong when it is repaired. Thanks everyone for the ideas and input!
That's cool, Markie... I for one will be waiting for your post. It'll be interesting to see what the issue is with your trans.
Alan

United States

#13 Sep 3, 2010
Floridian wrote:
I had a 66 mustang 289 back in 1969 and it started just grinding when I tried to put in reverse. Took it to my mechanic and he said it had a bent shifting arm. He fixed it about 10 minutes.
I did the same thing on my 66 Mustang, easy fix on those cars on the newer ones not so much:-)

Since: Jul 10

Blairsville

#14 Sep 4, 2010
Alan wrote:
<quoted text>
Have you tried putting it in 5th then into reverse at all? That tranny is the "weak link" in a lot of Fords, I've had several (2 right now) that have the same tranny. One had the input shaft fail at approx 10K miles though another lasted 160K & was still going when I sold it but was close to failure at that point. The original shifters are not adjustable to the best of my knowledge.
On the way to take the Mustang to the shop, I had to use reverse twice. I tried "as you suggested", putting it in 5th gear then reverse (same gate), it worked! I guess it opens the gate a little better. Great work around in a pinch. Should know exact cause by Thursday. So far, the leading suspect is "bent shift forks". And the only way to find and fix the problem is to remove the transmission and "crack it open". Not an adjustable item while installed in the car....
Alan

United States

#15 Sep 4, 2010
Markie608 wrote:
<quoted text>
On the way to take the Mustang to the shop, I had to use reverse twice. I tried "as you suggested", putting it in 5th gear then reverse (same gate), it worked! I guess it opens the gate a little better. Great work around in a pinch. Should know exact cause by Thursday. So far, the leading suspect is "bent shift forks". And the only way to find and fix the problem is to remove the transmission and "crack it open". Not an adjustable item while installed in the car....
Yeah unfortunately they'll probably have to pull the trans to check it out in which case might as well have new clutch/pressure plate & throw-out bearing installed at the same time. Id go with Genuine Ford parts personally.

Since: Jul 10

Blairsville

#16 Sep 4, 2010
Alan wrote:
<quoted text>
Yeah unfortunately they'll probably have to pull the trans to check it out in which case might as well have new clutch/pressure plate & throw-out bearing installed at the same time. Id go with Genuine Ford parts personally.
You are correct! The transmission comes out first thing Tuesday morning. I thought about pricing a new clutch/pressure plate & throw-out bearings. Now since you also thought about the same thing, I'll call the guy and if not outrageous, add those items. Thanks!

Since: Jul 10

Blairsville

#17 Sep 14, 2010
Update: The car is still in the shop, transmission open and waiting for parts. This model has a strange shifter fork set-up. The 5th gear/reverse shifter fork part is apparently the culprit. I should know by Thursday this week.
Alan

United States

#18 Sep 14, 2010
Markie608 wrote:
Update: The car is still in the shop, transmission open and waiting for parts. This model has a strange shifter fork set-up. The 5th gear/reverse shifter fork part is apparently the culprit. I should know by Thursday this week.
Hi Markie608 - Thanks for the update! The tranny on these cars seems to be the weakest link for better or worse.

Since: Jul 10

Blairsville

#19 Sep 22, 2010
Got the Mustang GT back today! 5th gear/reverse shifter fork. It was a manufacturing defect and they now make an improved fork to replace the original with. Of course, Ford was NO help. Also replaced 5th gear synchronizer per service bulletin. Not a cheap problem! And it took 3 weeks to find the parts. After I detail it tomorrow (it is beyond filthy), I will test it out going over Blood Mountain to Cleveland and back!!

Thanks to everyone that posted suggestions!
Alan

United States

#20 Sep 22, 2010
Markie608 wrote:
Got the Mustang GT back today! 5th gear/reverse shifter fork. It was a manufacturing defect and they now make an improved fork to replace the original with. Of course, Ford was NO help. Also replaced 5th gear synchronizer per service bulletin. Not a cheap problem! And it took 3 weeks to find the parts. After I detail it tomorrow (it is beyond filthy), I will test it out going over Blood Mountain to Cleveland and back!!
Thanks to everyone that posted suggestions!
Glad you got it back, sounds like a good "test" :-)

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