Official Tremec 3650 Issues Thread

I have an 04 and it grinds/clunks into 2nd gear. Its definitely worse when it's cold. Went to ford and they supossidly rebuilt it. Same problem remains. Also when in neutral with my foot off the clutch it sounds like there is marbles in the transmission. Ford likes to call this noise gear rollover. Sounds like a POS. Anybody else have gear rollover?


My '04 3650 did the same thing. It is now broken though.
 
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I have an 04 and it grinds/clunks into 2nd gear. Its definitely worse when it's cold. Went to ford and they supossidly rebuilt it. Same problem remains. Also when in neutral with my foot off the clutch it sounds like there is marbles in the transmission. Ford likes to call this noise gear rollover. Sounds like a POS. Anybody else have gear rollover?

yea mine does the same thing as urs. but mainly with "gear rollover" mine usually only does it after ive been driving the **** out of it.
 
Since I just read 20 pages of this endless post and I still don't have a good feel for this... does anyone know how to post a Poll? If you do, can you start a new thread with a simple Poll, something like this:

Which fluid do you feel works best in your 3650?
ATF synthetic
ATF non-synthetic
MTF synthetic
MTF non-synthetic

Just to see which is preferred by the majority of us. I switched from mercon ATF to purple mtf and although it seems like most people go the opposite route, I had great results. We have 70+pages of posts so I'm sure if only 10% of us respond to the Poll we will get some solid results.
 
I am with you. My 02 has 75K and until I read this I just thought that the S.O.B that owned it before me beat the crap out of it. 1st to 2nd even in warm weather, but cold engine, will grind or be difficult. In cold weather and cold engine conditions it's even worse. I changed the fluid to a synthetic like the guy above mentioned and there was no change noticed. With all these problems Ford should be handing out 6spd's for replacements! LOL
 
My trans is ****ed now. I started experiencing the 2nd gear grind earlier this year. So I just skipped 2nd and went straight to 3rd. Sometimes I could get it into 2nd with no grinding at all if I winded out 1st and shifted into 2nd like I was racing someone, other times it would grind like a mofo and lock me out. I could also shift into 2nd at a dead stop and take off.

Now if I put it in 2nd while the car is stopped and slowly let the clutch out I get grinding and thats it. Im either going to rebuild this trans with the D&D YK6 upgrade kit or swap to a T-56. Ive talked to D&D since their only about 15 minutes from my house. $650 for the parts and $350 for the labor to have it installed. Im not sure if thats them pulling the trans out or me bringing it in.

Im just not sure if I should spend $2500 on a new T56 plus all the other parts ill need for the swap.

D&D Performance - YK6 1-2, 3-4 Upgrade Kit
 
03 gt 5spd and ford oil additive.

I have a stock 03 gt, 84k and 1st to 2nd was sticky. took to ford had them change fluid using mercon. made no diff. then got to talking to a repair guy there who had an 02 gt and he said he had the same problem and used a ford oil additive that an older coworker told him about and now its smooth. I bought XL-3 ADDITIVE - OIL for $7.15. Smelled like old gear oil and looked gritty. Took it home poured it in and walah! no mo 1 to 2 sticky. 5k miles later still smooth. Anyone heard of this additive. I looked at the invoice and all it has for part#/description is XL-3 ADDITIVE - OIL. The guy said this ford product not in any ford manual or proceedures from ford. just an old timers trick. worked for me so far.
 
Hey guys, i wish i noticed this problem before i bought my mustang. Last week i bought a 2004 GT with 55k miles. My dad test drove it and didnt notice any problems, i guess both of us not being regular manual drivers we thought it was merely driver error. Has Ford made any statements on this issue? I only made it to 10 pages and stopped reading, pretty frustrated. If Ford refuses to recognize the problem what are our possible solutions other than replacing the trans? How often would you guys think this problem can go on before wearing out the transmission parts? thanks
 
2003 GT grind video and fix

Hey guys... I have a 2003 GT that just had that 2nd gear grind problem fixed and here's how!

I had a grind from 1st into 2nd gear that was very pronounced when my trans was cold. Thankfully it was under warranty, and after a huge amt of hassle it got fixed (had to threaten to sue the dealership before they would work on it). If it wasn't under warranty it would have been about a $2400 dollar fix. It was a 2nd gear synchro issue. Attached is the TSB. Good luck to all of you who have a similar issue on your 01-04 GT's! :nice:

Here is the TSB that fixes it... http://www.stangnet.com/images/stories/docs/sn95_TSBs/04-15-06.pdf

Video of grind. Turn up volume to hear.YouTube - IMG_0184.MOV