TCC locks when WOT
Thread Starter
Instructor
Joined: Nov 2020
Posts: 145
Likes: 48
From: France (Britanny)
TCC locks when WOT
Hi everybody ! 
On my Vette (L98 from 1986), lock-up activates at 42mph. Good.
But often (always), lock-up comes too early.
It locks after 42mph, ok, but also in WOT when accelerating... it doesn't wait the Corvette is stabilized in speed.
I have the impression sometimes, when 2nd going to 3rd for exemple, that's clutch which makes harder shift (WOT or not). Without clutch (desactived by very light foot on brake), 2nd to 3rd is real soft.
I have to replace transmission and converter soon, but new clutch won't last if the problem is still there...
TPS voltage is good (0.52V at idle, 4,3V at WOT).
I know that one solution is a switch. But if I could find the real problem, maybe it will be more simple
Thanks for your advices.
On my Vette (L98 from 1986), lock-up activates at 42mph. Good.
But often (always), lock-up comes too early.
It locks after 42mph, ok, but also in WOT when accelerating... it doesn't wait the Corvette is stabilized in speed.
I have the impression sometimes, when 2nd going to 3rd for exemple, that's clutch which makes harder shift (WOT or not). Without clutch (desactived by very light foot on brake), 2nd to 3rd is real soft.
I have to replace transmission and converter soon, but new clutch won't last if the problem is still there...
TPS voltage is good (0.52V at idle, 4,3V at WOT).
I know that one solution is a switch. But if I could find the real problem, maybe it will be more simple
Thanks for your advices.
