The patient in question is a 2003 4Runner V-8 4x4. Due to a stripped drain plug in the trans pan (spinning in hole, not backing out), I installed a new trans pan this weekend.
Now the fun begins. Engine was started when the trans was probably still a good bit low on ATF (added more than called for in a drain&fill, but apparently not enough more) and immediately threw a check engine light...also activated the VSC/TRAC Off lights, but that's probably a 4Runner specific thing. Now that the fluid is fully topped off, the lights are still there. This is a 5 speed auto, but she won't shift into 5th or lockup the torque converter in 4th. Also getting a *hard* 2->1 downshift when slowing down from speed. Otherwise behavior seems normal...no delay on P-R-N-D selection/engagement (N-D does have a bit of a jolt) and upshifts from 1->4.
Checking the DTC list in the FSM, there are a couple of conditions that can lock out 5th. I'm hoping it's as simple as the ATF temp sensor reading open on the initial start due to low fluid and the computer won't let me out of "limp" mode until the code is cleared. The other possible codes relate to various AT solenoids, which doesn't seem to be a likely scenario based on my layman's understanding...there should have been enough fluid in the pan to cover the valve bodies on the initial start.
The plan is to stop by AA/AZ on the way home and get the codes read and reset. Could I be lucky enough that it was just the temp sensor reading open? Any other thoughts?
TIA.
-Brent
Now the fun begins. Engine was started when the trans was probably still a good bit low on ATF (added more than called for in a drain&fill, but apparently not enough more) and immediately threw a check engine light...also activated the VSC/TRAC Off lights, but that's probably a 4Runner specific thing. Now that the fluid is fully topped off, the lights are still there. This is a 5 speed auto, but she won't shift into 5th or lockup the torque converter in 4th. Also getting a *hard* 2->1 downshift when slowing down from speed. Otherwise behavior seems normal...no delay on P-R-N-D selection/engagement (N-D does have a bit of a jolt) and upshifts from 1->4.
Checking the DTC list in the FSM, there are a couple of conditions that can lock out 5th. I'm hoping it's as simple as the ATF temp sensor reading open on the initial start due to low fluid and the computer won't let me out of "limp" mode until the code is cleared. The other possible codes relate to various AT solenoids, which doesn't seem to be a likely scenario based on my layman's understanding...there should have been enough fluid in the pan to cover the valve bodies on the initial start.
The plan is to stop by AA/AZ on the way home and get the codes read and reset. Could I be lucky enough that it was just the temp sensor reading open? Any other thoughts?
TIA.
-Brent