TRANS GURUS: Manual shift vs ECU commanded shift
#1
TRANS GURUS: 4L80e - Manual shift vs ECU commanded shift
This may be a stupid question but I am fairly close to being transmission illiterate.
(Original 4L60e cable / bracket / linkage being used on current 4L80e)
IF there were a cable / bracket / linkage binding issue that prevented trans from going into 1st gear
WOULD a commanded 1st gear be affected as well?
(Original 4L60e cable / bracket / linkage being used on current 4L80e)
IF there were a cable / bracket / linkage binding issue that prevented trans from going into 1st gear
WOULD a commanded 1st gear be affected as well?
Last edited by Superado; 05-14-2014 at 05:04 PM. Reason: added info
#5
In D as far as a I know.
My tuner is telling me that 1st is not working when he commands it from D while on the dyno.
He said, "it binds up and loads engine...when you put it in 2nd, it frees up."
He said that you can manually put it in 1st and it basically does the same thing.
He said the last time he saw this that he found "roller sprag and drum was shattered."
My tuner is telling me that 1st is not working when he commands it from D while on the dyno.
He said, "it binds up and loads engine...when you put it in 2nd, it frees up."
He said that you can manually put it in 1st and it basically does the same thing.
He said the last time he saw this that he found "roller sprag and drum was shattered."
Last edited by Superado; 05-14-2014 at 02:48 PM.
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#10
Solenoids checked and seem to be fine.
Valve body checked and seems to be fine.
Truck will not shift out of 2nd automatically at all.
Both SOLUS and efiLive can command 2nd and up...but still not 1st.
No metal in pan.
Valve body checked and seems to be fine.
Truck will not shift out of 2nd automatically at all.
Both SOLUS and efiLive can command 2nd and up...but still not 1st.
No metal in pan.
Last edited by Superado; 06-13-2014 at 01:09 PM.