[Ctown]

My 2001 manual PT is now at 77000miles and lately the car feels VERY weak. I constantly have to be at a gear lower than I'm used to to keep the manual transmission from jerking.........Also when I'm at stop the car occationally shocks a little from time to time like it's going to stall........u know the RPM have a quick drop and than back.

I don't know what the problem is hope some one can help

I haven't tune up for 20000miles and it eats more gas than normal

is it

1)Dirty air filter
2)old spark plugs and wires
3)dirty fuel filter
4)dying fuel pump
5)dying alternator(electrical problem?)
6)just a bad exhaust sensor?

I just don't know