t5 swap... Trans broken after 800 miles HELP HELP - Mustang Evolution

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Old 01-02-2014, 09:40 PM   #1
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t5 swap... Trans broken after 800 miles HELP HELP

okay so a little info for you I have a 1995 mustang gt 5.0 basic bolt ons, I recently swapped it from a aode to a fox t5, i had my local Amco rebuild it before I put it in, I finally did swap and while test driving new trans I completely lost 5th gear, it just disappeared so Amco fixed it, it was an awesome trans after that shifted great and tight drove awesome. I put about 800 miles on it and the other morning I was drivin it to work and had only driven about 3 miles, I went to shift into 5th an it went fine than out of nowhere the car started bucking and I grabbed shifter and noticed about every 3 seconds the shifter would bang and jump a bit so I topic the car into neutral and the car was still bucking it was actually acting like it was in gear than out than in, the car was buckin and jumping while in neutral so
I put It into 4th than it was a lot better no more bucking, as soon as I even got close to putting it into 5th gear the car started bucking again wothout it even bein in gear, so I limped the car home pissed, and Amco towed it to their shop and I called them today for an update and they said everything inside trans looks great they cant find problem... I've been without my Stang for 4 days now and am getting pissed please help
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Old 01-03-2014, 12:42 AM   #2
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Sounds like its not the trans. Could be fuel pressure problems, tps...I def think its a problem somewhere else. Fuel pressure, filter, tb, tps, ECM, something. Start checking simplest first.

---------- Post added at 12:42 AM ---------- Previous post was at 12:40 AM ----------

What else have you done to car recently?
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Old 01-03-2014, 11:42 AM   #3
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It's nothin but the tranny... the shifter itself was banging and only in 5th and the car was bucking and weird noises were coming from trans and every other gear was perfect the car runs excellent no issues at all
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Old 01-03-2014, 01:33 PM   #4
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What computer do you have? T5 can use a9l or A9p, but computer probably needs to be reset after tranny install...at least I would think. Sorry this int much help. If you are sure it's the tranny, and you know all mechanicals of it are good, that only leaves electronics.
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Old 01-03-2014, 01:49 PM   #5
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Quote:
Originally Posted by Sgt_Syke View Post
What computer do you have? T5 can use a9l or A9p, but computer probably needs to be reset after tranny install...at least I would think. Sorry this int much help. If you are sure it's the tranny, and you know all mechanicals of it are good, that only leaves electronics.
I've pulled my T5 trans 5 different times in the past 12 years and I've never reset my computer; so I'm going to say that's not the problem.
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Old 01-03-2014, 03:00 PM   #6
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Doesn't sound like it could be anything with the motor to me.i would think it would be doing it in any gears if it was mechanical.something could have broke the first time and may be floating around?personally I think it's still the transmition
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Old 01-03-2014, 03:16 PM   #7
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i agree its definitely a trans issue, aamco has taken it apart 3 times so far and still has no clue what went wrong they are positive its in the trans i just dont understand how its not something super easy to find considering how messed up it is and drives. and its not a high hp car just headers and mufflers so i cant figure out how they cant find the problem... and the car drove perfect for 800 miles with auto pcm no issues at all, fuel is perfect
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Old 01-03-2014, 04:33 PM   #8
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Sounds like 5th gear synchro is out.i would have them make sure no metal shavings in there.
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Old 01-05-2014, 10:51 PM   #9
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Go to a diffrent amco, apparently someone sucks at rebuilding t5's there. Or ask for your money back.
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Old 01-06-2014, 01:22 PM   #10
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Your first mistake was going to aamco... I'd get your money back and take it to a shop that knows what they are doing.
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Old 01-06-2014, 02:27 PM   #11
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So it is NOT necessary to swap PCM's when going from an auto to a manual transmission?
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Old 01-17-2014, 09:39 PM   #12
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well they found the issue... the 1-2 gear syncro hub that gets pressed onto the output shaft was wiped out, the splines were gone on inside and the hub itself was cracked... should have it back tuesday
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