weird problem.....

[lilvtboigotrice]

well I posted on a thread awhile back cause I have a problem with my car going into limping mode and while im on drive I can't go past 30 mph and the car acts like its over-revving cept it was only at 2k rpm. I was told here that it was the MAF or the intake but those checked out and the mechanic changed the fuel pump and the filter cause it was going bad and thought that the car was starving on gas so the car went ok for about a week and now the problem comes up again except worse and I can barely pass 10 mph. The strange thing is that sometimes I start the car up and everything runs fine and runs smooth and other times I start it up and the problem comes up. The question is would a malfunctioning auto transmission be the problem? thats what my mechanic said but I wanted to double check and make sure before I buy another transmission to put it in.

[fantabulous]

no codes?