One To Four
Thread Starter
Cruising
Joined: Jul 2005
Posts: 12
Likes: 0
From: Whitehall PA
One To Four
Hello, first time posting here, need some help.
I currently own a 1989 zf6 L98. Runs great
but it has that one to four shifting assistance. 
I know there is a write up on this in another section of this site but Ive tried what it says and no luck, actually, couldnt even find the relay they were talking about. But I did some research and found on this site a kit you can buy to get rid of the one to four, but was wondering if there is a relay or fuse that you can disconnect to disable the one to four. If so, where and exactly what relay or fuse or easy button do you pull? Thanks. 
I currently own a 1989 zf6 L98. Runs great
but it has that one to four shifting assistance. I know there is a write up on this in another section of this site but Ive tried what it says and no luck, actually, couldnt even find the relay they were talking about. But I did some research and found on this site a kit you can buy to get rid of the one to four, but was wondering if there is a relay or fuse that you can disconnect to disable the one to four. If so, where and exactly what relay or fuse or easy button do you pull? Thanks.
Melting Slicks
Joined: May 2002
Posts: 2,670
Likes: 4
From: Severna Park MD
Originally Posted by freaky
Hello, first time posting here, need some help.
I currently own a 1989 zf6 L98. Runs great but it has that one to four shifting assistance. I know there is a write up on this in another section of this site but Ive tried what it says and no luck, actually, couldnt even find the relay they were talking about. But I did some research and found on this site a kit you can buy to get rid of the one to four, but was wondering if there is a relay or fuse that you can disconnect to disable the one to four. If so, where and exactly what relay or fuse or easy button do you pull? Thanks.
I currently own a 1989 zf6 L98. Runs great
but it has that one to four shifting assistance. I know there is a write up on this in another section of this site but Ive tried what it says and no luck, actually, couldnt even find the relay they were talking about. But I did some research and found on this site a kit you can buy to get rid of the one to four, but was wondering if there is a relay or fuse that you can disconnect to disable the one to four. If so, where and exactly what relay or fuse or easy button do you pull? Thanks. You can also turn off the function in the ECM or PCM so that the skip shift never comes on. But for an 89 that would take a chip burn and replacement.
Thread Starter
Cruising
Joined: Jul 2005
Posts: 12
Likes: 0
From: Whitehall PA
Originally Posted by FELNGR8
The relay that acts on the transmission to force you into 4th or above hangs off the left side of the ZF6. You can just unplug the wiring harness to it.
Last edited by freaky; Jul 18, 2005 at 09:50 PM.
Le Mans Master
Joined: Jul 2001
Posts: 8,183
Likes: 3
From: Santa Maria, CA
The evil 1-4 solenoid is the round cylinder in the middle there.
Up in the upper left is the back up light switch.
On the tailshaft is the speed sensor.
Welcome to the forum by the way.
