Stupid gay newbie tranny question :) - Pirate4x4.Com : 4x4 and Off-Road Forum

Keith Strong · 03-04-2003, 12:09 PM

Will an 88 YJ auto be the same auto as an 89 XJ?

Monkeyboy · 03-04-2003, 12:18 PM

should be.

Monkeyboy · 03-04-2003, 12:20 PM

The Torque Flite 999 is a medium duty Chrysler 3 speed automatic transmissions. They have an aluminum case and a 23 spline output shaft. The case is ??" long and ?? bolts hold in the pan.

Modern versions are still use the 23 spline output, but engine bolt patterns have changed and the newer ones have electronic shift control. I have conflicting information about torque converters. Some say early models did not have a lock up torque converter and some say they did. Newer models have a lock up torque converter.

Usage
The TF 999 was used in CJs from 1980-1986 only with the I6 and V8 engine. It was also used in 1984-1990 SJs and J pickups with the 4.2L engine, in the YJ from 1987-1991 with the 2.5L and 4.2L engine, and in the XJ in 1991 with the 2.5L engine. A modern version of the 999 continues to be used in Wrangler YJs and TJs to this day with the I6 engine.

Transmission 1st 2nd 3rd 4th 5th Rev
TF 999 2.74 1.55 1.00 2.20

Monkeyboy · 03-04-2003, 12:22 PM

Doesn't look like it.

The AW4 is a 4 speed automatic overdrive transmission.

Usage
The AW4 four speed automatic transmission was used in 1987 to 1990 Jeep Cherokee (XJ), & Jeep Comanche with 2.5L & 4.0L engines. The AW4 was also used in 1991 through 1992 Jeep Comanche & 1991 through 1998 Jeep Cherokee & 1993 through 1993.5 Jeep Grand Cherokee with 4.0L engines.

Keith Strong · 03-04-2003, 12:24 PM

I figured the overdrive might be an issue. Can the 999 go in as a replacement without issue?

Keith Strong · 03-04-2003, 12:48 PM

What about this. Lets say I have an 88 YJ 999/231 setup bolted together. I just need to know if I can pull the XJ setup from bellhousing back and toss in the YJ stuff without any mods (cept driveshaft). I know the computers in XJ 4.0 are different, would the system revolt the 999?

Jason R · 03-04-2003, 01:00 PM

TF999 in a YJ is also column shift...gonna have to figure that out too.

LEVE · 03-04-2003, 04:28 PM

Quote:

Originally posted by Jason R
TF999 in a YJ is also column shift...gonna have to figure that out too.

Lokar and B&M make floor shift kits for the TF999...

mtndewmaniac · 03-04-2003, 06:20 PM

Quote:

Originally posted by Monkeyboy
The Torque Flite 999 is a medium duty Chrysler 3 speed automatic transmissions. They have an aluminum case and a 23 spline output shaft. The case is ??" long and ?? bolts hold in the pan.

Modern versions are still use the 23 spline output, but engine bolt patterns have changed and the newer ones have electronic shift control. I have conflicting information about torque converters. Some say early models did not have a lock up torque converter and some say they did. Newer models have a lock up torque converter.

Usage
The TF 999 was used in CJs from 1980-1986 only with the I6 and V8 engine. It was also used in 1984-1990 SJs and J pickups with the 4.2L engine, in the YJ from 1987-1991 with the 2.5L and 4.2L engine, and in the XJ in 1991 with the 2.5L engine. A modern version of the 999 continues to be used in Wrangler YJs and TJs to this day with the I6 engine.

Transmission 1st 2nd 3rd 4th 5th Rev
TF 999 2.74 1.55 1.00 2.20

Just to add in to the confusion.
The 999 was also used behind the 84-86 XJ-chevy powered 2.8L v6s and also has the lock up torque converter. They also have the unique 60 deg v6 bell housing. (my converter locks up at 40 mph, and kicks back out at 35 mph)

Just useless info to dabble in, but shares many of the internal parts.

DE Jeeper · 03-04-2003, 06:54 PM

I should work out for you. I am using a 91 XJ engine (was mated to an auto), harness and computer in my '88 YJ w/ a 5 spd. The engine computer does not care that all of the auto wires are disco'ed. You will probably need to just ground out the Neutral/Park switch on your XJ harness. I have an FSM from a '91 if you need pin numbers and wire colors. They will probably be different though becuase your XJ has the Renix FI in it.

Keith Strong · 03-05-2003, 10:25 AM

Sounds to me like it would just be easier to find a replacement AW4

barepickler · 03-06-2003, 09:21 PM

On this same note I have a 1985 jeep waggy with a 999 torque flight in it will that set-up bolt in a 90 yj with 2.5L? also its an amc 360 in the wag with what I think is a 241 t-case.

any help for this newbie?

Kensoffroad · 03-06-2003, 09:54 PM

Blah blah blah

Hey strong how is it your threads always produce a load of usless BS

It should not be to hard to find a replacment aw-4 they go for 2-300$ up here in WA.

Keith Strong · 03-07-2003, 07:44 AM

Quote:

Originally posted by GPN Family
Blah blah blah

Hey strong how is it your threads always produce a load of usless BS

It should not be to hard to find a replacment aw-4 they go for 2-300$ up here in WA.

Because I like to annoy old time a-holes like you

I know worst case I can get one for $400. But the more I look into this it kinda sounds like a bad torque converter

Kensoffroad · 03-07-2003, 02:33 PM

did you check the fluid level in it?

welndmn · 03-07-2003, 03:27 PM

Call Steve

Don "Woody" Woodward · 03-09-2003, 06:59 PM

Dunno if you are having the same AW4 issues I am (in my 89 4.0l XJ)...but my torque convertor quit locking up after I swapped out the master cyl and power booster. I must have narfed the switch (that unlocks the TC when brakes are applied) somehow during the swap.

Friday at lunch I made the rounds - Advance & the Zone don't list it, the Jeep Stealership wanted $40 and a week to order it...I may check NAPA tomorrow, I have heard it's about $12 there.

Anyway here is a link for some cheap mods that allow full manual control over the tranny by 'outsmarting' the Tranny computer (TCU) I plan to try this one day this week at work (it's nice to have a 'wheelin' boss) and if it bypasses the lockup switch, my life will be nearly complete & I won't have to pull the seat out and climb under there no mo!

http://www.bigoffroad.com/pages/bigp...ch/2ndgear.htm

Po' riggity · 03-10-2003, 10:21 AM

Quote:

Originally posted by Jason R
TF999 in a YJ is also column shift...gonna have to figure that out too.

Thats real tough, buy a floor shifter, and hook it up.. Thats what I did when I swapped in my auto into my yj .
Scott

Keith Strong · 03-10-2003, 02:05 PM

I bought a samurai instead

I didnt wanna get into another "project" vehicle as a daily for my wife.....so she got this

http://www.rps4wd.com/cgi-bin/yabb/Y...num=1047265339

03-04-2003, 12:09 PM	#1 (permalink)
Keith Strong Registered User Join Date: Mar 2000 Member # 477 Location: The Peeplz Republik Posts: 12,256	Stupid gay newbie tranny question :) Will an 88 YJ auto be the same auto as an 89 XJ? __________________ [CENTER][SIZE="5"][URL="http://www.strong-arms.com"]Strong Arms "Survival Slings" For Sale PM me for a PBB only price[/URL] [/SIZE][/CENTER]

03-04-2003, 12:18 PM	#2 (permalink)
Monkeyboy Registered User Join Date: Jun 2000 Member # 1169 Location: Antioch, CA. Posts: 7,124	should be. __________________ It was even more of a turn on when I found out she was doing me to buy baby formula

03-04-2003, 12:20 PM	#3 (permalink)
Monkeyboy Registered User Join Date: Jun 2000 Member # 1169 Location: Antioch, CA. Posts: 7,124	The Torque Flite 999 is a medium duty Chrysler 3 speed automatic transmissions. They have an aluminum case and a 23 spline output shaft. The case is ??" long and ?? bolts hold in the pan. Modern versions are still use the 23 spline output, but engine bolt patterns have changed and the newer ones have electronic shift control. I have conflicting information about torque converters. Some say early models did not have a lock up torque converter and some say they did. Newer models have a lock up torque converter. Usage The TF 999 was used in CJs from 1980-1986 only with the I6 and V8 engine. It was also used in 1984-1990 SJs and J pickups with the 4.2L engine, in the YJ from 1987-1991 with the 2.5L and 4.2L engine, and in the XJ in 1991 with the 2.5L engine. A modern version of the 999 continues to be used in Wrangler YJs and TJs to this day with the I6 engine. Transmission 1st 2nd 3rd 4th 5th Rev TF 999 2.74 1.55 1.00 2.20 __________________ It was even more of a turn on when I found out she was doing me to buy baby formula

03-04-2003, 12:22 PM	#4 (permalink)
Monkeyboy Registered User Join Date: Jun 2000 Member # 1169 Location: Antioch, CA. Posts: 7,124	Doesn't look like it. The AW4 is a 4 speed automatic overdrive transmission. Usage The AW4 four speed automatic transmission was used in 1987 to 1990 Jeep Cherokee (XJ), & Jeep Comanche with 2.5L & 4.0L engines. The AW4 was also used in 1991 through 1992 Jeep Comanche & 1991 through 1998 Jeep Cherokee & 1993 through 1993.5 Jeep Grand Cherokee with 4.0L engines. __________________ It was even more of a turn on when I found out she was doing me to buy baby formula

03-04-2003, 12:24 PM	#5 (permalink)
Keith Strong Registered User Join Date: Mar 2000 Member # 477 Location: The Peeplz Republik Posts: 12,256	I figured the overdrive might be an issue. Can the 999 go in as a replacement without issue? __________________ [CENTER][SIZE="5"][URL="http://www.strong-arms.com"]Strong Arms "Survival Slings" For Sale PM me for a PBB only price[/URL] [/SIZE][/CENTER]

03-04-2003, 12:48 PM	#6 (permalink)
Keith Strong Registered User Join Date: Mar 2000 Member # 477 Location: The Peeplz Republik Posts: 12,256	What about this. Lets say I have an 88 YJ 999/231 setup bolted together. I just need to know if I can pull the XJ setup from bellhousing back and toss in the YJ stuff without any mods (cept driveshaft). I know the computers in XJ 4.0 are different, would the system revolt the 999? __________________ [CENTER][SIZE="5"][URL="http://www.strong-arms.com"]Strong Arms "Survival Slings" For Sale PM me for a PBB only price[/URL] [/SIZE][/CENTER]

03-04-2003, 01:00 PM	#7 (permalink)
Jason R Registered User Join Date: May 2002 Member # 11598 Location: USA Posts: 6,062	TF999 in a YJ is also column shift...gonna have to figure that out too. __________________ This space for rent.

03-04-2003, 06:54 PM	#10 (permalink)
DE Jeeper Mr. FixIt Join Date: Jun 2001 Member # 5295 Location: Wilmington, DE Posts: 518	I should work out for you. I am using a 91 XJ engine (was mated to an auto), harness and computer in my '88 YJ w/ a 5 spd. The engine computer does not care that all of the auto wires are disco'ed. You will probably need to just ground out the Neutral/Park switch on your XJ harness. I have an FSM from a '91 if you need pin numbers and wire colors. They will probably be different though becuase your XJ has the Renix FI in it. __________________ '88 YJ with not much '88 YJ left We-Rock Stock Class Team Mall Crawler #609 Sponsored by: The Drive Shaft Shop www.driveshaftshop.com Delaware Jeep Assoc. www.delawareja.com

03-05-2003, 10:25 AM	#11 (permalink)
Keith Strong Registered User Join Date: Mar 2000 Member # 477 Location: The Peeplz Republik Posts: 12,256	Sounds to me like it would just be easier to find a replacement AW4 __________________ [CENTER][SIZE="5"][URL="http://www.strong-arms.com"]Strong Arms "Survival Slings" For Sale PM me for a PBB only price[/URL] [/SIZE][/CENTER]

03-06-2003, 09:21 PM	#12 (permalink)
barepickler Registered User Join Date: Oct 2002 Member # 14601 Location: Sonora CA Posts: 68	another dunb newbie On this same note I have a 1985 jeep waggy with a 999 torque flight in it will that set-up bolt in a 90 yj with 2.5L? also its an amc 360 in the wag with what I think is a 241 t-case. any help for this newbie? __________________ I swear to god ask Donna! helmethead is an awsome dentist!

03-06-2003, 09:54 PM	#13 (permalink)
Kensoffroad Registered User Join Date: Jun 2001 Member # 5558 Location: Washington Posts: 2,400	Blah blah blah Hey strong how is it your threads always produce a load of usless BS It should not be to hard to find a replacment aw-4 they go for 2-300$ up here in WA.

03-07-2003, 02:33 PM	#15 (permalink)
Kensoffroad Registered User Join Date: Jun 2001 Member # 5558 Location: Washington Posts: 2,400	did you check the fluid level in it?

03-07-2003, 03:27 PM	#16 (permalink)
welndmn Well Done Man! Join Date: Mar 2000 Member # 398 Location: Bay Area, CA Posts: 17,433 Blog Entries: 3	Call Steve __________________ Mark 71 Bronco. 42's and bolt on goats. 47' CJ2a, 302, C4, 33's. 2012, year of the flat fender.

03-09-2003, 06:59 PM	#17 (permalink)
Don "Woody" Woodward Obtuse Join Date: Dec 2002 Member # 15436 Location: Central NC Posts: 238	Dunno if you are having the same AW4 issues I am (in my 89 4.0l XJ)...but my torque convertor quit locking up after I swapped out the master cyl and power booster. I must have narfed the switch (that unlocks the TC when brakes are applied) somehow during the swap. Friday at lunch I made the rounds - Advance & the Zone don't list it, the Jeep Stealership wanted $40 and a week to order it...I may check NAPA tomorrow, I have heard it's about $12 there. Anyway here is a link for some cheap mods that allow full manual control over the tranny by 'outsmarting' the Tranny computer (TCU) I plan to try this one day this week at work (it's nice to have a 'wheelin' boss) and if it bypasses the lockup switch, my life will be nearly complete & I won't have to pull the seat out and climb under there no mo! http://www.bigoffroad.com/pages/bigp...ch/2ndgear.htm

03-10-2003, 02:05 PM	#19 (permalink)
Keith Strong Registered User Join Date: Mar 2000 Member # 477 Location: The Peeplz Republik Posts: 12,256	I bought a samurai instead I didnt wanna get into another "project" vehicle as a daily for my wife.....so she got this http://www.rps4wd.com/cgi-bin/yabb/Y...num=1047265339 __________________ [CENTER][SIZE="5"][URL="http://www.strong-arms.com"]Strong Arms "Survival Slings" For Sale PM me for a PBB only price[/URL] [/SIZE][/CENTER]

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