Are you getting a speed reading in the display for vehicle speed?
CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.
1982 C/K 6.0L Caitlyn Mall Crawler (Interior time)
- Thread starter Babaganoosh
- Start date
Yes but it's pulling off the GPS speed, I can't seem to get it to go off of the vss. Does the handheld have a option to view the vss?
I believe it does but I haven't specifically tried that. I would be diagnosing using the data at this point. You should be able to see what gear its in, vehicle speed, trans temp, everything. If you can't see some of it you know where to look. I wouldn't want to use the GPS speed long term anyway, it won't work under trees or tunnels, etc. It will work well to compare tire speed to ground speed though! ha ha
I tried to datalog with the pro dash but it wasn't able to play back gave me a error.
Looking at this picture, I believe I can set the speedo to trans speed and that will pull off the vss?
Last edited:
At work, trying to plan when I get home to quickly make educated attempts.
Be interesting to see - I'd bet there's some calibration to be done there.
My lunch consists of how fast I can scarf something down and get back to work. I should be getting out of here in about a hour and a half.
I have had a trans tune before and honestly I liked it better stock with of course torque management off cause race truck.
Speaking of that, the front left likes to lift a lot more with the new cam in.
Did you read the post about the 4L60e I posted?
I did a quick skim on it and will read it now. Just not sure how some of it will transfer to the Holley ECU
You only have 2nd? Does reverse work?
Sounds like you may be in limp mode.
Sounds like you may be in limp mode.
Yes, reverse and 2nd gear, it is in limp mode.
My trans has a complete parts list from Sonnax, the only thing modified in the ECU is tire size and gear ratio from Holley.
I'm willing to bet sense it was my first weather pack connector I didn't get a contact of one of the pins. It passed a visibility test though.
My point was that you want to observe the shift pressures and timings
I see, I need to figure out how to get the data log working to do that. Two things I want to try after work is setting the speedo to pull from the vss and flip the main connector around.
What gets me is if the shift pressure and timings are off then I can't believe the Holley base tune would be that far off that one wouldn't work right out of the box.
Limp mode is usually lack of a 12v signal to the transmission, my vote is something electrical - some issue with the plug to the transmission. Do you have the old tranny plug to compare pins? I suppose you could google a pic and compare.
I'd find this hard to believe also, if it worked fine before the terminator, I would think base tune has to be close if not exactly stock for the transmission.
david
I typed it fast and didn't proof read and reading it again I agree.
I was trying to say I find it hard to believe the Holley base tune for the trans would be that far off it wouldn't shift out of the box. It certainly is possible and something I would like to learn how to properly adjust and your findings does make sense.
I typed it fast and didn't proof read and reading it again I agree.I was trying to say I find it hard to believe the Holley base tune for the trans would be that far off it wouldn't shift out of the box. It certainly is possible and something I would like to learn how to properly adjust and your findings does make sense.
