engine trouble

heres the deal...my engine starts up fine and runs well for a while at any
kind of speed, but after about 30-40 minutes of road driving it starts to sputter.

It starts sputtering and sounds like its running on one or two cylinders. It might level out for a little bit but if i give it too much gas at once it starts to bog down again. It has even cut off on me while driving.

Ive checked a lot of stuff out but was just wondering if anyone had any suggestions. Could it be overheating?

its a '96 with the HO 4.0 and AW4 by the way

Test the coolant Temperature Sensor, the Crankshaft Position Sensor, the O2 sensors, and the Camshaft Position Sensor.

I vote for coolant temp sensor on the thermostat housing.

yea i checked the tps and cps but ill check the therm. to

I vote fuel pump. Sounds like exactly what mine did.

i put a new one in not too long ago but with all the wheeling its definitely a possibility. I'll check that to.

It seems like there are a lot of people with this problem, but no definite solution. I hope to get it solved soon:dunno: