jerkekekekey downshift & accel.

my 89 MGM runs smooth but has that jerkey downshift and has a bad studder! at certain speeds at any time but most of the time at take off its smoooooth as can be iv'e done a complete tune up on it and cleaned all of the carbon in out and around the engine i didn't change the fuel filter yet cause did not think it was the problemo please someone help dont want to give up on this car thanks

how bout the kickdown cable??

my 89 MGM runs smooth but has that jerkey downshift and has a bad studder! at certain speeds at any time but most of the time at take off its smoooooth as can be iv'e done a complete tune up on it and cleaned all of the carbon in out and around the engine i didn't change the fuel filter yet cause did not think it was the problemo please someone help dont want to give up on this car thanks

HAVE U CHECKED THE TRANS.?

U MIGHT HAVE VALVE PROBLEMS.

SCAN THE TRANS. FOR CODES.

MAYBE AN OIL FILTER CHANGE COULD HELP.