My 92 3.2 trooper starts and runs fine for about ten to twenty min and then looses power and almost dies pressing on the gas makes it worse. Turning off the ignition seems to reset somthing and I am able to drive for another few miles beforeit happens again. I have changed the IAC, the plugs, air and all the other filters. It runs fine at an idle. HELP!!![img]smileys/smiley6.gif[/img]

 

is ur check engine lite on ?
i would check the EGR valve
or
some sort of vacuum leak
(soapy water or Carb cleaner )with engine running listen for changes while u spray

 

I agree EGR valve or throttle position sensor.