I was trying to figure out why my car feels like it runs good from idle to 3400 and 3600 and up but their is a little hiccup right at 3500 and as soon s you get past the hiccup then it zooms away. Just doesn’t make since you me.

 

Anyone have anyclue. its a 2000 with 146 and it runs like a scalded dog sometimes and sometimes it doesnt want to go. Its a moody car