Automatic Transmission 2-Speed thru 10-Speed GM Autos | Converters | Shift Kits
Sponsored by:
Sponsored by:

4L80E Limp Mode possible causes?

Old Jan 10, 2012 | 03:57 PM
  #21  
T/A KID's Avatar
Thread Starter
TECH Fanatic
iTrader: (12)
 
Joined: Jul 2004
Posts: 1,818
Likes: 2
Default

Update: Checked Voltage of my Optima read top in the rear and showed 12.2 volts (suppose to be around 12.8).

Below is a log of parameters I ran using my trans config, something it showed was ignitino voltage was 11.0 V.


EDIT: For some reason I can't load my Config?? BUT force motor duty cylce is 4.7%, Force motor current is 0%, Line pressure 90%, Trans shift mode is Normal D2
Attached Files
File Type: hpl
trans1012.hpl (16.3 KB, 146 views)
Reply
Old Jan 10, 2012 | 05:12 PM
  #22  
T/A KID's Avatar
Thread Starter
TECH Fanatic
iTrader: (12)
 
Joined: Jul 2004
Posts: 1,818
Likes: 2
Default

Update: I talked to Frank at performabuilt and he mentioned to me just turning the key on would only show second gear regardless and that I needed to run it. Well I was hoping the solenoids would fix the problem and I believe they did look at this log

It shows first gear when instantly when the car is running (like it should), its too wet to drive so I will confirm in the morning.

looks like input and output rpms match perfectly (Is this normal)?
BTW ignition voltage jumped to 13.00V.


Sure hope I still have good news in the morning.

Big thanks to all that helped, I really appreciate it. Stay TUNE

Last edited by T/A KID; Jan 10, 2012 at 05:46 PM.
Reply
Old Jan 10, 2012 | 06:14 PM
  #23  
Jake's Performance's Avatar
FormerVendor
iTrader: (2)
 
Joined: Oct 2010
Posts: 1,774
Likes: 24
Default

Originally Posted by Jake's Performance

You aren't going to show anything but 2nd until you have pressure.
Like I said earlier, when you power up the trans, you won't show anything but 2nd until you have pressure (run the car).
Reply
Old Jan 10, 2012 | 07:04 PM
  #24  
Cam72aro's Avatar
TECH Addict
iTrader: (28)
 
Joined: Feb 2006
Posts: 2,137
Likes: 1
From: Sugar Land, Tx
Default

Jack the rear end up and put stands under it and run it through the gears. You will know if its shifting.
Reply


Thread Tools
Search this Thread

All times are GMT -5. The time now is 01:05 PM.