please help

[90ctsho]

i have a 90 sho with and its giving me a lot of problems. it has 155k. the harder i step on the gas the more it doesnt go its hard to explain. i have to drive it at less than 1/4 throttle and shift at 3 grand or else it starts bucking and it maintains the same speed it wont go faster. if anyone has any clue what might be wrong with it please help me out. thanks a lot

 

[Mark in PDX]

Have you pulled the codes? Checked the throttle cable? Checked the secondaries & plug wires?

 

[ransnan]

Sounds like it could be time for a new fuel filter. Did you run it way low on gas lately. This same thing happend to my 96 F-150.

 

[Bizzy]

You might want to try new plugs and wires and a nice intake cleaning while you're at it. You'll be amazed at the crud that will come out of the intake, and even more surprised at how much better the car runs.