lumbee1
Native American
My engine was rebuilt in the fall of 2021 and I installed a supercharger in the fall of 2022.
After installing the supercharger, normal operation has been great however under WOT the transmission shifts at 3400 rpm (PWR not engaged).
I've adjusted the throttle cable (kickdown) based on recommendations from the forum, not the FSM.
The throttle body valve throw has been set to maximize sweep and the TPS has been verified to be in spec and IAC and TPS are Toyota OEM.
FSM describes shift points too soon as being possibly
Kickdown to a lower gear has always required more foot pressue than I feel is necessary but even then it won't hold the gear to redline. I have not tried manually shifting at redline.
Any suggestions for what to look for next?
BTW, the throttle cable was a discontinued part but they are appearing on ebay again.
After installing the supercharger, normal operation has been great however under WOT the transmission shifts at 3400 rpm (PWR not engaged).
I've adjusted the throttle cable (kickdown) based on recommendations from the forum, not the FSM.
The throttle body valve throw has been set to maximize sweep and the TPS has been verified to be in spec and IAC and TPS are Toyota OEM.
FSM describes shift points too soon as being possibly
- TPS circuit
- Pattern select switch ciruit
- No. 1 vehicle speed sensor circuit
- No. 2 vehicle speed sensor circuit
- ECM
Kickdown to a lower gear has always required more foot pressue than I feel is necessary but even then it won't hold the gear to redline. I have not tried manually shifting at redline.
Any suggestions for what to look for next?
BTW, the throttle cable was a discontinued part but they are appearing on ebay again.