i have an 02 f150 fx4. it has 76k miles on it. It shifts very smooth when i am driving normal. But when i get on it, when it shifts from first to second, it has a stumble to it. It is hard to explain, but it kind of feels like it is shaking from first to second. this only happens when i am getting on it though. is it normal? just wanted to look into it to make sure. Thank you!

 

Have you had the tranny flushed with a filter change? If not, might help cause thats not normal.