So I bought the car at 144k miles with fresh tanny fluid and it was shifting perfectly up until not too long ago(Put 6k miles on it myself). It likes to shift just fine up until operating Temps. Then it likes to shift hard from first to second and second to third. I’ve read a lot of different things that people are doing like changing pressure switched and changing out the filter. I just wanted to get some advice personally and from someone who has gone through the same problem that I am going through now. Thanks.

 

I would change the filter and the two pressure switches.