manual transmission gear problem solved - Mustang Evolution

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Old 08-08-2013, 08:58 AM   #1
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manual transmission gear problem solved

So 3 weeks after installing a TVS supercharger on my car, i started having the same gear issues I see so many people having on the 2011+ mustangs.

After reading many threads about what a difference changing the transmission fluid makes, I decided to go ahead and swith to redline MTL. after completing the swap and having no improvement what so ever, I thought that my clutch must be going.

It didn’t seem to have any of the symptoms of a failing or slipping clutch other than gear lockout and grinding. I would accelerate quickly in 1st and drop to 5th with the gas pegged and the RPM didnt spike at all. The clutch disingaged fine, no burning smell..

So on the cusp of buying a exedy stage III clutch and flywheel, I decided to change my brake/clutch fluid. The reservoir was full so i expected nothing, as i removed the old fluid (turkey baster style I could see it was filthy, sweet tea color. I added the new fluid, pumped the clutch removed some more and topped her off.

LONG STORY short. this solved all my gear problems, and the transmission is behaving flawlessly.. honestly better than new. I recommend anyone to give this simple, cheap, swap a try. My wife was none to happy when I told her I was about to throw another 1k on the car after the cost of the SC.. this cleaned that up as well 
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Old 08-08-2013, 09:00 AM   #2
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Thanks for the write up. Good info.
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Old 08-08-2013, 11:44 AM   #3
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Hmm, what fluid did you use for the brake/clutch fluid redline mtl aswell? I thought the redline mtl was only used in the transmission. My trans seems to be okay so far ( knock on wood), but every now and then it will be a little crunchy going into 2nd or 3rd. Ive noticed full throw of the clutch def helps with the engagement of a different gear.
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Old 08-08-2013, 12:00 PM   #4
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Hmm, what fluid did you use for the brake/clutch fluid redline mtl aswell? I thought the redline mtl was only used in the transmission. My trans seems to be okay so far ( knock on wood), but every now and then it will be a little crunchy going into 2nd or 3rd. Ive noticed full throw of the clutch def helps with the engagement of a different gear.
No, dont put gear fluid in your brake fluid. I went with valvoline brake fluid dot 3&4. Just remember once you empty the reservoir and fill it back up pump your brakes a few times and the clutch I pumped about 100x. Shut'er off and check the fluid level again. If needed add more to get you to the max fill line. The entire maintenance took about 10 min.. and what a HUGE difference, better than new.
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Old 08-08-2013, 01:13 PM   #5
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No, dont put gear fluid in your brake fluid. I went with valvoline brake fluid dot 3&4. Just remember once you empty the reservoir and fill it back up pump your brakes a few times and the clutch I pumped about 100x. Shut'er off and check the fluid level again. If needed add more to get you to the max fill line. The entire maintenance took about 10 min.. and what a HUGE difference, better than new.
Hah, that's what I thought. I was reading and saying, wait, did he put the mtl trans fluid in his brake bottle. So Mike, did you just turkey baster all the fluid out you could get and then refill with new fluid, start n pump and then refill if needed? May be worth doing if it helps the trans shift/work better overall.
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Old 08-09-2013, 06:00 AM   #6
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Quote:
Originally Posted by MikeC View Post

No, dont put gear fluid in your brake fluid. I went with valvoline brake fluid dot 3&4. Just remember once you empty the reservoir and fill it back up pump your brakes a few times and the clutch I pumped about 100x. Shut'er off and check the fluid level again. If needed add more to get you to the max fill line. The entire maintenance took about 10 min.. and what a HUGE difference, better than new.
There. Should be a bleeder on the clutch just like on the brakes. I have only owned my car for 3 months but a hydraulic clutch has to have a bleeder.
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Old 08-10-2013, 07:24 PM   #7
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Hah, that's what I thought. I was reading and saying, wait, did he put the mtl trans fluid in his brake bottle. So Mike, did you just turkey baster all the fluid out you could get and then refill with new fluid, start n pump and then refill if needed? May be worth doing if it helps the trans shift/work better overall.
Yes that's exactly what I did. It shifts better than when I bought her 3 years ago today!
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Old 08-12-2013, 08:56 PM   #8
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Yes that's exactly what I did. It shifts better than when I bought her 3 years ago today!
Thanks! I'm going to get a baster tomorrow and put in the new fluid and see how that feels.
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Old 08-13-2013, 12:38 PM   #9
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This sounds fairly simple, however; I'm a bit confused on where the fluids from clutch line and brake lines go when you pump them many times? I get it the brake and clutch line bleeds itself off of air in the system, but how do you replace the old fluids in the lines, not do include the ABS system?

I've been changing my brake fluids on all my vehicles and I always use the turkey baster but pump out the old fluid too to replaced it with new fluid from filling out the reservoir.
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Old 08-13-2013, 01:59 PM   #10
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This sounds fairly simple, however; I'm a bit confused on where the fluids from clutch line and brake lines go when you pump them many times? I get it the brake and clutch line bleeds itself off of air in the system, but how do you replace the old fluids in the lines, not do include the ABS system?

I've been changing my brake fluids on all my vehicles and I always use the turkey baster but pump out the old fluid too to replaced it with new fluid from filling out the reservoir.
The pumping just moves the new fluid in with what's left of the old, improving it. To get a total replacement of fluid in the clutch, you may have to repeat the process a couple times.
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