I have a 1991 cherokee jeep with about 167000miles. My truck is having this jerking stubbering problem to where my rpm hand is jerking up and down and when I press on the gas it seems to have a low power almost like its missing. I have replaced the relays, throttle sensor, crank sensor, distributor cap and rotor and fule sensor and nothing has changed. What could this problem be?
Any applicable trouble codes? Use a gage and check fuel pressure. Are you sure it is the engine causing issue and not tranny? Without a code or something to go in the right direction, The generic list of possibilities is probably as long as your arm? I can find you a list of possibilities if you want it?