Tranny problems on a 1996

Hethj7 · 04-14-2004, 01:46 PM

My buddy has a 1996 4.6L with an auto. The transmission will not shift into 3rd at all. It runs through first and second and then tries to hit 3rd, but ends up getting stuck in between gears or something. The engine just begins to rev freely and he has to manually put it back into second. Any ideas?

96_4.6 · 04-14-2004, 08:02 PM

Just happened to me a few months back and guess what you need, REBUILD cause you have shattered gear pieces in there I forgot the right expression of whats shattered but mine needed a rebuild at about 74,100.

Hethj7 · 04-14-2004, 08:42 PM

He figured that whatever happened was probably pretty major. Thanks for the reply. I'll let him know.

Mercury · 04-15-2004, 01:39 AM

Could also be, quite possibly a bent shift fork. My Friends and I a few weeks ago took out, rebuilt, and put back in a T-45 that had the same symptoms..but after a week of driving, his just croaked flat out.

Broke Shift Fork was the culprit. So, its a possibility on yours.

We had out, rebuilt and in, and the car back on the road within 8 hours.

91LX2Bfast · 04-15-2004, 07:06 PM

Two possibilites I can see from reading Jerry W's thesis:

Itermediate One Way Clutch
Symtoms: No 1-2 shift or no 3rd and 4th gear. A failing one way clutch will cause a late 1-2 shift that finishes with a big bang, or will allow the engine to run into the rev limiter at WOT.
What Models?: All AODE and 4R70W's built before 1998
Problem: This design one way clutch is not suited for this environment.
Solution: Install the mechanical diode one way clutch. This part is almost bullet proof.

OR

No 3rd or 4th gear
Problem: The direct clutch is burnt up. This could have been cause by a bad intermediate one-way clutch, or could have just burned up.
Solution: Rebuild

Have your friend read this info - It will help him diagnose problems, or can help him rebuild that trans with the right parts: Ford OD Transmissions 101 - Jerry's mod

Hethj7 · 04-15-2004, 07:43 PM

Merc - The tranny is an auto. If it were a T-45 I wouldn't hesitate as much to pull it out, but I wouldn't want the first time I pull an auto tranny out to be on someone else's car. I may never get it put back together

91LX2Bfast - Thanks for the info and the link! I am going to run this info down to him now.

Mercury · 04-15-2004, 11:06 PM

Quote:

Originally posted by Hethj7
Merc - The tranny is an auto.

Opps...now I feel like a total idiot...Yeah, might take you a while (Like infinity) to find a shift fork then. Opps again. *Blush*

Hethj7 · 04-15-2004, 11:11 PM

lol, no problem. I kind of hid the fact that it was an auto in my original post. I am sure it was easy to overlook.

04-14-2004, 01:46 PM	#1
Hethj7 Mizzou Tigers Join Date: Apr 1999 Location: weston, MO United States Posts: 1,455	Tranny problems on a 1996 My buddy has a 1996 4.6L with an auto. The transmission will not shift into 3rd at all. It runs through first and second and then tries to hit 3rd, but ends up getting stuck in between gears or something. The engine just begins to rev freely and he has to manually put it back into second. Any ideas? __________________ 2006 Mustang GT 1990 LX GT-40 motor 262 horsepower, 307ft-lbs (sold but forever loved) 1998 Contour SVT Rice Haters Club Member #244

04-14-2004, 08:02 PM	#2
96_4.6 Registered Member Join Date: Jul 2002 Location: Michigan Posts: 417	Just happened to me a few months back and guess what you need, REBUILD cause you have shattered gear pieces in there I forgot the right expression of whats shattered but mine needed a rebuild at about 74,100. __________________ 1996 Mustang GT, AODE -Trickflow Upper Plenum -BBK 70mm Throttlebody -02 PI Lower Intake -March Pulleys -BBK H-Pipe -2 Chamber Flowmaster mufflers -3000 RPM Stall -JLT CAI with special K&N -MSD Supercondutor wires -180 stat -FRPP 4:10's *FOR SALE C&L TRUE FLOW INLET PIPE WITH K&N* My Stang

04-14-2004, 08:42 PM	#3
Hethj7 Mizzou Tigers Join Date: Apr 1999 Location: weston, MO United States Posts: 1,455	He figured that whatever happened was probably pretty major. Thanks for the reply. I'll let him know. __________________ 2006 Mustang GT 1990 LX GT-40 motor 262 horsepower, 307ft-lbs (sold but forever loved) 1998 Contour SVT Rice Haters Club Member #244

04-15-2004, 07:06 PM	#5
91LX2Bfast Registered Member Join Date: Dec 1999 Location: Warrington, PA Posts: 694	Two possibilites I can see from reading Jerry W's thesis: Itermediate One Way Clutch Symtoms: No 1-2 shift or no 3rd and 4th gear. A failing one way clutch will cause a late 1-2 shift that finishes with a big bang, or will allow the engine to run into the rev limiter at WOT. What Models?: All AODE and 4R70W's built before 1998 Problem: This design one way clutch is not suited for this environment. Solution: Install the mechanical diode one way clutch. This part is almost bullet proof. OR No 3rd or 4th gear Problem: The direct clutch is burnt up. This could have been cause by a bad intermediate one-way clutch, or could have just burned up. Solution: Rebuild Have your friend read this info - It will help him diagnose problems, or can help him rebuild that trans with the right parts: Ford OD Transmissions 101 - Jerry's mod __________________ '97 T-bird LX 4.6L 2V, auto SVO heads/intake, Vortech T-trim, front mounted intercooler, blower cams, Cobra crank, Manley H-beam rods, JE pistons, Aeromotive fuel system w/ 42# injectors, and much more No times yet

04-15-2004, 07:43 PM	#6
Hethj7 Mizzou Tigers Join Date: Apr 1999 Location: weston, MO United States Posts: 1,455	Merc - The tranny is an auto. If it were a T-45 I wouldn't hesitate as much to pull it out, but I wouldn't want the first time I pull an auto tranny out to be on someone else's car. I may never get it put back together 91LX2Bfast - Thanks for the info and the link! I am going to run this info down to him now. __________________ 2006 Mustang GT 1990 LX GT-40 motor 262 horsepower, 307ft-lbs (sold but forever loved) 1998 Contour SVT Rice Haters Club Member #244

04-15-2004, 01:39 AM	#4
Mercury The Redneck James Bond Join Date: Sep 2000 Location: Fayetteville NC Posts: 1,707	Could also be, quite possibly a bent shift fork. My Friends and I a few weeks ago took out, rebuilt, and put back in a T-45 that had the same symptoms..but after a week of driving, his just croaked flat out. Broke Shift Fork was the culprit. So, its a possibility on yours. We had out, rebuilt and in, and the car back on the road within 8 hours.

04-15-2004, 11:11 PM	#8
Hethj7 Mizzou Tigers Join Date: Apr 1999 Location: weston, MO United States Posts: 1,455	lol, no problem. I kind of hid the fact that it was an auto in my original post. I am sure it was easy to overlook. __________________ 2006 Mustang GT 1990 LX GT-40 motor 262 horsepower, 307ft-lbs (sold but forever loved) 1998 Contour SVT Rice Haters Club Member #244

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