P1751 Honda - I had a bad torque converter and replaced it.

Question

pulled p1751 code, replace the following sensors with no change. pressure control solenoids A and B, shift solenoid valve B. Need help fast!!

New torque converter and the above sensors....not catching in 2, 3 or 4th gear. will catch second when cold, but drops out back into 1st shortly after

Answer 1

if the car is shifting hard and grinding gears the transmission will be bad, if not the solenoids may need to be replaced. if you have not replaced the transmission fluid you should also do that