we had our truck put on tester at az code po750 said shiftsolenoid I performance on 2002 Toyota Tacoma

gave us three possible choices 1)shift cable out of ajustment 2)clogged or leaky shift solenoid 1 or 3)blocked passages in valve body could you tell us what to do next and where to start checking and how and where the shift solenoid is located

2 answers
You need to take it to a speciality shop(transmission). This is not a DIY job.
get a free diag and est from aamco then shop pricing