1994 Pontiac Sunbird

Engine Mechanical problem
1994 Pontiac Sunbird 4 cyl Manual 150000 miles

so I have a 94 pontiac sunbird, I drove it to work one day and it started vibrating, like the whole car did and I couldnt go over 40 without the car making a knocking noise. After work I thought it may been out of oil, no.I put new oil in, new spark plugs, new spark plug wires, and a new o2 censor. It vibrates a little less, but we tried a test drive and it died. Its acting like its not getting enough gas, like no matter how hard I press the pedal it moves like an inch and then dies. Any ideas on whats wrong with it? Thanks
April 15, 2010.

Sounds like the catalytic converter is clogged, Is the " service engine soon" light on?

Apr 15, 2010.