I'm working on my 93 del sol with an auto d15b7 and I just want to get it working soon. I recently got it working after I bought it from someone else and got to drive it recently and have some shifting problems. The car will over rev or seemingly will not shift into gear 4. I read the code on my car and got a 19 so I replaced my shift solenoid. After replacing it I still have the same problem, any advice? Things I should try and change? Any help would be much appreciated.

 

Replace the transmission