'94 YJ auto, lockup or not? - Pirate4x4.Com : 4x4 and Off-Road Forum

Wes in TN · 10-21-2003, 04:47 PM

I can't find a straight answer anywhere. Does anyone know for sure if a 1994 YJ, 4.0L, TF999 auto has a lockup torque converter or not? I'm thinking it doesn't but I need to know for sure. I'm trying to complete an order with Art Carr and a quick answer would really help out. Thier books tell them it could go either way and I really haven't driven the Jeep enough since I picked it up to know (I'm not near the Jeep right now).

rock-rod · 10-21-2003, 05:03 PM

When you drive it you should be able to feel the converter lock.

Is the tranny out? If so, pull the converter and if the tip of the input shaft is machined, not spline all the way, then it is a lock-up converter.

i think every Tf is a lock-up style since the mid '70s.

Wes in TN · 10-21-2003, 05:13 PM

The tranny is in the Jeep and I'm not near it to drive it at the moment. I bought the Jeep week before last and basically parked it. I'm just trying to line up parts right now and need a firm answer. Every source I've check or contacted says it should be lockup based on the year but from the short amount of time I did drive it I don't think it is. Surely someone out there knows for sure.

The Rockslut · 10-21-2003, 05:29 PM

I have a 94 YJ with a 4.0/999. Yes it has a lock up converter.

Wes in TN · 10-21-2003, 07:40 PM

Okay, is it an electric lock up or not? The sales guy at Art Carr said a manual valve body couldn't be used with a lockup converter, anyone know why not? I can't seem to rationalize why not but this is my first slush box. Any help?

The Rockslut · 10-21-2003, 08:04 PM

Its not electronic.

10-21-2003, 04:47 PM	#1 (permalink)
Wes in TN Registered User Join Date: Aug 2001 Member # 6647 Location: Nashville, TN Posts: 839	'94 YJ auto, lockup or not? I can't find a straight answer anywhere. Does anyone know for sure if a 1994 YJ, 4.0L, TF999 auto has a lockup torque converter or not? I'm thinking it doesn't but I need to know for sure. I'm trying to complete an order with Art Carr and a quick answer would really help out. Thier books tell them it could go either way and I really haven't driven the Jeep enough since I picked it up to know (I'm not near the Jeep right now).

10-21-2003, 05:03 PM	#2 (permalink)
rock-rod Registered User Join Date: Jun 2003 Member # 20092 Location: Porker, CO Posts: 3,466	When you drive it you should be able to feel the converter lock. Is the tranny out? If so, pull the converter and if the tip of the input shaft is machined, not spline all the way, then it is a lock-up converter. i think every Tf is a lock-up style since the mid '70s. __________________ '94 Toyota Land Cruiser FJZ80 - Vortec L33 5.3l, 4L60e, elocked, 3" OME lift, 315 KM2s, Warn 8074.

10-21-2003, 05:29 PM	#4 (permalink)
The Rockslut Registered User Join Date: Jun 2001 Member # 5021 Location: Lincoln, CA Posts: 5,967	I have a 94 YJ with a 4.0/999. Yes it has a lock up converter. __________________ Don't be "THAT GUY" on the trail. www.voodoowax.com

10-21-2003, 08:04 PM	#6 (permalink)
The Rockslut Registered User Join Date: Jun 2001 Member # 5021 Location: Lincoln, CA Posts: 5,967	Its not electronic. __________________ Don't be "THAT GUY" on the trail. www.voodoowax.com

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10-21-2003, 05:13 PM	#3 (permalink)
Wes in TN Registered User Join Date: Aug 2001 Member # 6647 Location: Nashville, TN Posts: 839	The tranny is in the Jeep and I'm not near it to drive it at the moment. I bought the Jeep week before last and basically parked it. I'm just trying to line up parts right now and need a firm answer. Every source I've check or contacted says it should be lockup based on the year but from the short amount of time I did drive it I don't think it is. Surely someone out there knows for sure.

10-21-2003, 07:40 PM	#5 (permalink)
Wes in TN Registered User Join Date: Aug 2001 Member # 6647 Location: Nashville, TN Posts: 839	Okay, is it an electric lock up or not? The sales guy at Art Carr said a manual valve body couldn't be used with a lockup converter, anyone know why not? I can't seem to rationalize why not but this is my first slush box. Any help?