should i be worried??

[powerhungry966]

okay my car feels slower then usual.. uhm when i'm climbing a hill and its like on fourth gear it sorta grindz, then when it down shifts it goes away?

[meteorachick]

i had a similar problem with my firebird, and it turned out i was droppin a cyllinder...not sure if thats the same problem with u, but i also had a lot of other problems with that car too....