All of a sudden , No 3rd or 4th gear. - TCCoA Forums
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post #1 of 36 (permalink) Old 05-14-2004, 08:09 PM Thread Starter
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All of a sudden , No 3rd or 4th gear.

OK, this trans has been worked over by Jerry and I am just cruising along today and all of the sudden it revs and shifts out of gear. Now I have no 3rd or 4th gear.
I have to go to manual 2nd to keep on moving, it overruns in 3rd and never really engages at all.



Is there a basic , Valve body, etc, issue that I can check before having it torn apart?

and yes it happens on the only weekend that I had planned a meeting with local MN12 folks and a show at the local road course.

Ideas???????

thx
rm

Last edited by RichardM; 05-15-2004 at 10:05 PM.
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post #2 of 36 (permalink) Old 05-14-2004, 08:14 PM
 
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yes i have the same problem, if u turn od off then it should work fine, i have no money or job either so i have not been able to fix mine, i have been driving with 1st and 2nd gear now for atleast 3000 miles, so if u dont need to drive over 70 then it should last awhile, it sucks doing 45 and reving 3000rpms lol but it gets me were im goin not even gonna fix it, just gonna buy a TA when i get some money
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post #3 of 36 (permalink) Old 05-14-2004, 10:02 PM Thread Starter
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Well, OD switch has a slight effect, but its not quite that.
If I rev it up in Drive, it will eventually engage, but then it won't hold.
I am thinking that the shift solenoid is working, just no engagement.

And no, driving at 45 with 3.73 gears is not that nice. 4000 rpm around town will not be in my future.

rm
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post #4 of 36 (permalink) Old 05-15-2004, 04:41 AM
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Jerry's tech article contains a lot of solutions to various transmission problems. You may want to check that. Also, the obvious, check your fluid. It doesn't sound like it's low, but you never know, and you may see metal dust in it letting you know you're screwed.

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post #5 of 36 (permalink) Old 05-15-2004, 12:16 PM
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Richard, It's gotta be something related to the direct clutch... you might get lucky and find that a valve in the VB is stuck, but it sounds like the seal rings arent working. Im sure if Jerry looked at it the clutches should be strong enough. You can ask him if he knows anything beyond that, but the forecast doesnt look good to me.

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post #6 of 36 (permalink) Old 05-15-2004, 01:32 PM
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It could also be the intermediate one-way clutch, or even the shift solinoids (can't remember which, possibly #2).




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post #7 of 36 (permalink) Old 05-15-2004, 01:34 PM Thread Starter
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Well the pan is clean.
Just the fine coating of dark material, the magnet has a heavy coating of it.
fluid is not smelly of burnt and is actually pretty red, not brownish at all.

Going to check resistance of SS2 and go from there.
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post #8 of 36 (permalink) Old 05-15-2004, 03:43 PM
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If SS2 falied OFF, wouldnt the car just be stuck in 1st and 2nd gears and unable to upshift? The solenoids are easy enough to check, so it couldnt hurt.

96 Mustang GT 5spd. w/ 248A Option (GTS). Stock for now until I get the Roush on.

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24k B&M Cooler, 1" lowered, Steeda UD Pulleys, Dynomax cat-back, J-mod, 3.73's, PI intake, PI cams, 03 GT MAF/Tube, SCT tuned - Gone but not forgotten.
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post #9 of 36 (permalink) Old 05-15-2004, 04:46 PM Thread Starter
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2-3 accumulator piston is missing a chunk of rubber,
that should take care of it

rm
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post #10 of 36 (permalink) Old 05-15-2004, 05:42 PM
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wow, that's lucky. I've never heard of the newer ones having any problems. See anything in there that would have caused it?

96 Mustang GT 5spd. w/ 248A Option (GTS). Stock for now until I get the Roush on.

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24k B&M Cooler, 1" lowered, Steeda UD Pulleys, Dynomax cat-back, J-mod, 3.73's, PI intake, PI cams, 03 GT MAF/Tube, SCT tuned - Gone but not forgotten.
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post #11 of 36 (permalink) Old 05-15-2004, 06:31 PM Thread Starter
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Well, putting the new one in, I could tell you could damage it if not careful.
Pinned it all back together and still not shifting.
I think the loose particles must be lodged in the valve body. I should have taken the time to dissassemble it, but I really needed to finish to make another appointment. May take the valve body out again and do that tomorrow.


Last edited by RichardM; 05-15-2004 at 10:03 PM.
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post #12 of 36 (permalink) Old 05-16-2004, 05:23 PM
 
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mine lost 3rd and od the other day also. mine is in the shop right now getting fixed.
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post #13 of 36 (permalink) Old 05-26-2004, 10:27 PM Thread Starter
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Intermediate one way clutch broke.
OD band is worn out as well as some clutch plates.


Build is done and car is back.

On a side note, rear main seal was not sealing due to lip seal spring getting out of its groove. New one is in, no more leak. yeah
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post #14 of 36 (permalink) Old 05-26-2004, 10:51 PM
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You didn't have the mech. diode in there? I've never heard of one of the good ones breaking.

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24k B&M Cooler, 1" lowered, Steeda UD Pulleys, Dynomax cat-back, J-mod, 3.73's, PI intake, PI cams, 03 GT MAF/Tube, SCT tuned - Gone but not forgotten.
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post #15 of 36 (permalink) Old 05-27-2004, 08:00 AM Thread Starter
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It was a mechanical diode.
Asked the tech about it, he has seen a number of them fail.

And with the new 2-3 piston the 2-3 is pretty stiff now.

rm
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post #16 of 36 (permalink) Old 05-27-2004, 09:36 AM
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Damn, that sucks about your car RM. Glad you got it back.
Where'd you end up getting the work done? You guys went out to Sandia ? (SMS)

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post #17 of 36 (permalink) Old 05-27-2004, 10:39 PM Thread Starter
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Its better now.
No SMS show though, that was the worst part.
I will be running street class at thisweekend's ABQ dragway .
Test n tune Friday and racing Saturday.

Got it all ready to go basically.
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post #18 of 36 (permalink) Old 06-15-2004, 09:30 PM
 
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yeah same thing just happened to my 94, not looking forward to tearing it down.
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post #19 of 36 (permalink) Old 07-08-2006, 11:01 AM
 
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I have the same problem in my 94 Mustang GT. It wont shift 3rd or 4th at all. I had no problems before i installed new tc and transgo shift-kit ( I heard about Jmod after i installed the shift-kit...) I have engine braking in manual 2nd so what could cause the problem? Please help, my hands are turning red because of the ATF
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post #20 of 36 (permalink) Old 07-08-2006, 11:15 AM
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I just read this thread the first thing I was thinking when you said it would engage but not hold was something in the 2-3 accumulator. As far as the diodes go I have seen a number of failures from them as well. I would have to assume there was a bad batch. When I came across 97/98 trucks mostly we would see the diodes broken if they had it. But still they break less than the roller clutch setups.

Melbac I would assume you have a problem in the 2-3 accumulator as well. If the bottlecap is out of place you will lose 3rd and 4th
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post #21 of 36 (permalink) Old 07-08-2006, 11:35 AM
 
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I have a new rubber type 2-3 accumulator. Is there a trick getting the bottlecap correctly in place?
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post #22 of 36 (permalink) Old 07-08-2006, 11:50 AM
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The bottlecap must be seated completely or it will cock to the side and allow the piston to travel too far

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post #23 of 36 (permalink) Old 07-10-2006, 07:50 AM
 
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I tried to install 2-3 accumulator spring and bottlecap but the spring force is too high for that bottlecap. It`s a very stiff spring. Should it be tensioned all the time when it`s properly installed? I`m starting to think i have a wrong spring..
I checked my 94 Mustang service manual and ATSG AODE manual but it didn`t help me at all.
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post #24 of 36 (permalink) Old 07-10-2006, 07:54 AM
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Remove the spring yes it sounds like you have the wrong spring.
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post #25 of 36 (permalink) Old 07-10-2006, 08:05 AM
 
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Ok, thanks for the fast reply... So it should not be tensioned?
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post #26 of 36 (permalink) Old 07-10-2006, 08:50 AM
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Not if the piston is fully seated.
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post #27 of 36 (permalink) Old 07-10-2006, 09:14 AM
 
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Ok, then there is something wrong. Thanks
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post #28 of 36 (permalink) Old 07-10-2006, 10:11 AM
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I ordered a reman Diode and drum and it came to me broke with metal peices falling out fo the bottom after I pulled it off the drum...first failure I have seen so far.

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post #29 of 36 (permalink) Old 07-10-2006, 10:24 AM
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Did you check the MLPS droping out of gear or sudden reving on the down shift are systems of a bad transmission selector switch also called the "neutral safety" "backup light" or "transmission Position switch".

i'd rather go slow than not go at all

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post #30 of 36 (permalink) Old 07-10-2006, 04:34 PM
 
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It still doesn`t work.. http://www.becontrols.com/ourfaqs/fa...orRetainer.jpg
Is that bottlecap properly installed? Any ideas?
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