My engine light has been on for a couple of years but the driving has been all good until last week when I can feel my transmission fighting to rev up. If I do a rolling stop and go, my RPM goes sky high to 4000 and I haven't top 10 mph yet! Almost every time the car switches gears, I feel the car lurch forward like it is struggling. What's going? Feels like my car is stalling when I try to accelerate too fast.

I got suckered into a diagnostic test by Kwik Kar and they told me I have 4 error codes that is causing the computer to tell the transmission to fault so I can bring it in for fixing (catalytic converter he says). Is this BS? I know jack about cars. Please help.