4l80e wont shift WOT.

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02-05-2012, 08:14 PM

#11

JankesGTO

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Quote:

Originally Posted by Jake's Performance

Pressures should be 190-200 psi with that kit at max commanded pressure.
However you'll probably see some pressure spikes/drops.

Was it installed with the "gear command" feature, plates on the outside of the valveAnd body?

And when it doesn't shift is it only happening on a WOT 1-2 shift or all shifts, like the 2-3, 3-4 shift?
Auto shift or manual? Both?

I did a short log this morning. When I log Pressure control solenoid pressure TFMPRS. It only saying I have 93psi WOT.
Not sure on the gear command plates what do they look like? All shifts all gears no matter if i manual shift it or not.

Last edited by JankesGTO; 02-06-2012 at 01:01 PM.

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02-15-2012, 11:04 AM

#12

JankesGTO

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Bump this up to the top for more ideas. Checked for burned or broken wires yesterday and could not find any. Went for spin same thing. Im really only testing the 2-3 shift but it will do it no matter what gear its in.

kyle im not sure how to log commanded gear. Its xed out and doesnt give me a prerequisite pid.

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02-15-2012, 01:09 PM

#13

kbracing96

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In BBL, log GEAR, in the scanner, I think it GM.PRND.

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03-02-2012, 07:00 AM

#14

1BADAZZSS

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Try checking the added vss plug I had to add. Good connection at the trans, no burnt wires running to Pcm, and the pins are still in place in the connector. Might have to take red/blue cover to make sure. Also on the big trans plug, make sure the wires are I had to swap still had good connection. Will I shift if you do it manually? Could be a shift solenoid gone bad as well. Good luck!