4l60e to zf6 swap problems
Thread Starter
Heel & Toe
Joined: May 2007
Posts: 19
Likes: 0
From: Georgetown Texas
4l60e to zf6 swap problems
I just finished a zf six speed in place of a 4L60e swap. It's mostly good but I can't get the speedometer to read. Does anyone know if the signal from the VSS of these two is the same or different?
The PCM was reprogramed and now one of the VSS inputs is graounded through the PCM. Sound right?
Thanks in advance.
The PCM was reprogramed and now one of the VSS inputs is graounded through the PCM. Sound right?
Thanks in advance.
Thread Starter
Heel & Toe
Joined: May 2007
Posts: 19
Likes: 0
From: Georgetown Texas
It's a 96. It's a different part number than the VSS that was in the 4l60, but has the same electrical connector. Also, the wiring diagrams that I bought for the Vette, indicate that it is a permanent magnet signal generator, same as the one in the 4l60.
The pins in the PCM are labeled VSS signal high and VSS signal low. When I checked the wiring, the signal low line showed a low resistance ground, so I assumed that I had grounded the wire during the swap. Instead, I found that the PCM is grounding that input. That does'nt seem right to me. I would have thought that the low and high would be a closed loop to the pcm and speedometer. Is this a normal condition?
The pins in the PCM are labeled VSS signal high and VSS signal low. When I checked the wiring, the signal low line showed a low resistance ground, so I assumed that I had grounded the wire during the swap. Instead, I found that the PCM is grounding that input. That does'nt seem right to me. I would have thought that the low and high would be a closed loop to the pcm and speedometer. Is this a normal condition?
Safety Car
Joined: Jun 2006
Posts: 3,629
Likes: 28
From: FL
It's a 96. It's a different part number than the VSS that was in the 4l60, but has the same electrical connector. Also, the wiring diagrams that I bought for the Vette, indicate that it is a permanent magnet signal generator, same as the one in the 4l60.
The pins in the PCM are labeled VSS signal high and VSS signal low. When I checked the wiring, the signal low line showed a low resistance ground, so I assumed that I had grounded the wire during the swap. Instead, I found that the PCM is grounding that input. That does'nt seem right to me. I would have thought that the low and high would be a closed loop to the pcm and speedometer. Is this a normal condition?
The pins in the PCM are labeled VSS signal high and VSS signal low. When I checked the wiring, the signal low line showed a low resistance ground, so I assumed that I had grounded the wire during the swap. Instead, I found that the PCM is grounding that input. That does'nt seem right to me. I would have thought that the low and high would be a closed loop to the pcm and speedometer. Is this a normal condition?
Race Director
Joined: Mar 1999
Posts: 12,597
Likes: 237
From: Bartlett Illinois
