Transmission Slipping/Shifting Hard
I recently bought a 2000 Ranger XLT with a 3.0 and automatic transmission. Shortly after I picked the truck up, I noticed it seemed like it did not want to accelerate, almost like it had a misfire. I had to hold it to the floor to get up to highway speed. I've been running premium fuel in it and have used a couple of cans of Sea Foam.
That problem seems to have pretty much gone away, but now it seems like I'm having some shifting issues. When accelerating, the RPM's go way up in first gear, and then it shifts fairly hard into second. Then, it almost immediately shifts into third. Also, sometimes when I'm already moving, if I floor it the RPM's spike and it will bounce off the rev limiter for a second or two until I back off the throttle. Any suggestions on what this could be?