PDA

View Full Version : 99 7.4L questions....


98SS2836
May 9th, 2007, 01:11 PM
I cant get my EFI live to read the computer. I guess I don't know how to go about it. I don't know if the controller is supported or not. I thought it was.
If I hit check status it say it's fine. If I put 99and up it doesn't work if I put vortec L31 It cam up with a vin lock. How could this be?
Doc
May 9th, 2007, 02:18 PM
Do you have the V1 or V2?
98SS2836
May 9th, 2007, 09:51 PM
I have the V1.
Doc
May 10th, 2007, 12:25 AM
I am not exactly positive but, I don't think the V1 can read that pcm? Maybe somebody can chime in.
wait4me
May 10th, 2007, 01:26 AM
v2 is needed for the vortec pcms. The communication protocal of the pcm itself was not compatible with v1. Ross tried, but it wasnt going to work.
98SS2836
May 10th, 2007, 10:48 AM
v2 is needed for the vortec pcms. The communication protocal of the pcm itself was not compatible with v1. Ross tried, but it wasnt going to work.

cool thanks. You know Ill be ordering an upgrade from you soon.
Doc
May 10th, 2007, 02:58 PM
Ya mon! Keep da V1 in yer Z and da V2 ready to roll in everybody else's ride.

:notacrook:
N0DIH
May 14th, 2007, 06:01 AM
What protocol do these PCM's use? Not CAN that old is it??

I had always thought it was the VPW.
wait4me
May 14th, 2007, 06:09 AM
It is vpw, but the v1 wasnt liking the comms.