6l80 loss of pressure on hard launch
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single digit dreamer
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Joined: Mar 2002
Posts: 9,757
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From: omaha ne
6l80 loss of pressure on hard launch check out this screen shot.
i am logging actual line pressure and aceleration. also logging the computers requested line pressure(pcs1).
you see in 1st gear how the actual line pressure crashes all the way to 50psi even though the computer isn't telling it to go down. then g's go down, then pressure goes back up, then car takes off hard again with some wheel hop.
any ideas why the line pressure would tank like that. only thing i can think of is the sump is sucking air. any issue with running some extra fluid other than maybe it pukeing it out? i was thinking about trying an extra quart.
any other ideas other than sucking air? anyone ever have a pan off of one of these?
i am logging actual line pressure and aceleration. also logging the computers requested line pressure(pcs1).
you see in 1st gear how the actual line pressure crashes all the way to 50psi even though the computer isn't telling it to go down. then g's go down, then pressure goes back up, then car takes off hard again with some wheel hop.
any ideas why the line pressure would tank like that. only thing i can think of is the sump is sucking air. any issue with running some extra fluid other than maybe it pukeing it out? i was thinking about trying an extra quart.
any other ideas other than sucking air? anyone ever have a pan off of one of these?
