Transmission wont stay in first

Jeffrostang · Nov 9, 2005

I just bought a 95 mustang cobra and the transmission will not stay in first gear. As soon as I get on the gas I get a big clunk and it pops right out. No other gear does it and it does have a short thow shifter on it. Otherwise I love the car and it runs like a champ. Any ideas?

BlownFiveLiter · Nov 9, 2005

Someone else had this problem recently, I'm curious what the resolution was. Mine did it around 5-6 years ago with a $100 junkyard trans I put in it after annihilating my stocker, but I don't remember what the issue was. I believe it was something with a bad bearing causing excessive clearance? Does it grind any gears at all? Could possibly be from worn synchros causing the gears to wear on the edges of the teeth.

Joes95GT · Nov 9, 2005

StangGT1995 said:
Someone else had this problem recently, I'm curious what the resolution was. Mine did it around 5-6 years ago with a $100 junkyard trans I put in it after annihilating my stocker, but I don't remember what the issue was. I believe it was something with a bad bearing causing excessive clearance? Does it grind any gears at all? Could possibly be from worn synchros causing the gears to wear on the edges of the teeth.

I've never understood first gear in T5's. I know they aren't synchronized.

Blocker rings are what holds the car in gear....that would be my first guess...

Joe

18mustangs · Nov 9, 2005

Jeffrostang said:
I just bought a 95 mustang cobra and the transmission will not stay in first gear. As soon as I get on the gas I get a big clunk and it pops right out. No other gear does it and it does have a short thow shifter on it. Otherwise I love the car and it runs like a champ. Any ideas?

Before you start anything expensive, check the stops on your short throw shifter. I had a similar problem a few years ago and it turned out that my adjustable stop moved.
TIm

Methodical · Nov 9, 2005

Yeah pull the leather boot and adjust the stops. Go for a drive and keep adjusting 'til it stays. The shifter is just probably and the very end where it jumps out of gear. When I install my BM ripper I had the same problem - trying to get it as close as possible before it jumps out of gear. Let us know the outcome. Peace.

Jeffrostang · Nov 9, 2005

I'll try and adjust the stops tommorrow. Thanks for the info. 1st is the only gear that does it and the rest of the trans is smooth and clean shifting. Its gotta be the shifter. It does it almost everytime. I start in second to avoid the embarassment of the load pop it makes when it flys out of gear.

DARK-5.0 · Nov 10, 2005

Like said above, check your shifter stops, If that doesn't cure the problem. Worst case senario is that your shift interlock is worn out. When the interlocks go bad, it will pop out of gear. No problem though, the interlockers are right under the shifter base.

Jeremy

Green 94 5.0 · Nov 10, 2005

if it was the front stop on the shifter, it should give him trouble in 3rd and 5th as well. my guess would be something internal with the tranny.

will_95gt · Nov 10, 2005

I have the exact same problem in 2nd. Not sure exactly what part is malfunctioning but it scares the hell out of my passengers whenever it happens. (which is probably 3 or 4 times a week)

18mustangs · Nov 10, 2005

Green 94 5.0 said:
if it was the front stop on the shifter, it should give him trouble in 3rd and 5th as well. my guess would be something internal with the tranny.

Perhaps, but the above point about checking the shifter stops was to exhaust the free possibilities before trying the expensive stuff. That being said when my shifter stop caused my tranny to pop out of 1st, 3rd and 5th were fine. After my stops were adjusted the problem ceased.
Tim

DARK-5.0 · Nov 10, 2005

Sorry about my above comment about the interlocks, the interlocks stop you from engaging two gears at once. What you want to do is pop off your shifter and look at the detents on the shift forks. They will wollow out over time and will cause the gear to pop out. So check that out. Again, its an easy fix.

Jeremy

Jeffrostang · Nov 11, 2005

I adjusted the stops on the shifter and it is still bad. Whats weird is if the trans is warmed up it does it alot less, when cold it won't stay in period. Today I also noticed that 3rd gear is making a whining sound that gets worse thoughout the gear. Haven't used 5th much yet. But 2nd, 4th, and reverse work great. I think I need a rebuild or upgrade.

Blackened302 · Nov 11, 2005

this happens to me when i downship to 2nd, and i've got the stock shifter.

a buddy of mine's pops out of reverse, and once we adjusted the bump-stop, it took care of it. might wanna try that.

Jeffrostang · Nov 13, 2005

Looks like I'm going to take it to www.bieberfever.com in phoenix and let them replace the trans. I debating the t-5 or the TKO 500. I wonder what the difference in install work would be.

Blackened302 · Nov 13, 2005

igotyofire · Nov 14, 2005

3rd gear whine is common i belive, i belive it is the loudest gear...lol i usually tell people i have a supercharger when i shift into 3rd haha. ya but theyre are some ways to quiet it down if it becomes too annoying

Transmission wont stay in first

Jeffrostang

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