Pontiac Repair: loss of power, pontiac sunbird, 1991 pontiac sunbird

Question
i drive a 1991 pontiac sunbird LE. it has about 200229 miles on it now. problem is strong fuel oder, no power and bad mialage. i have replaced the plugs and wires also the fuel filter. still i have no power. it sputters  and jerks up hill and if i get down on it 70 MPH is about it will do. it is a manuel 5 speed 3.1 Maybe i should also tell you i got caught in some high water before this happend if that means any thing. please help i am at a dead end. oh i also had the catalytic converter checked and it's ok. thank you for any help

                     rickey

Answer
Hi Rickey:

well first off does this have a service engine soon light on? If sop start there. if not it sould like the engine is being over fuled "running rich" Now why? it can be for any number of reasons. If all 4 cyclinder are firing then you have to look at fuel delivery. any one of the input sensors can be bad from a map sensor to throttle sensor or even a oxygen sensor. Hoe does it start up cold
? If it runs really bad cold then it could be a coolant temp sensor. Being that this is a fuel injected car without the aid of a scan tool it's hard to say what the issue could be. Good luck:}