Just recently after replacing the fuel pump the truck developed an occasional misfire; it will smooth back out.
After going at expressway speeds, then going at normal intersectional road speeds the truck will begin to misfire, sometimes more than 1 cylinder, can feel it being worse at times than others.
This happens even if the truck has been turned off and/or fueled up in between the changes in load.
but only from fast to slow not from slow to fast.
over the past year it has had developed a die off after going uphill at very low speeds and stopping at top.
i have replaced all cylinder ignition electrical items: plugs, coil, wires, rotor pin and cap; sensors: throttle, map, idle-air, mani-temp, fuel pressure. have checked and replaced or stopped all vac breaks. most recently within the past 3 months the fuel filter, and within the last 2 weeks the fuel pump. it does take a second to get the truck to turn over like the fuel is not getting there immediately.
After going at expressway speeds, then going at normal intersectional road speeds the truck will begin to misfire, sometimes more than 1 cylinder, can feel it being worse at times than others.
This happens even if the truck has been turned off and/or fueled up in between the changes in load.
but only from fast to slow not from slow to fast.
over the past year it has had developed a die off after going uphill at very low speeds and stopping at top.
i have replaced all cylinder ignition electrical items: plugs, coil, wires, rotor pin and cap; sensors: throttle, map, idle-air, mani-temp, fuel pressure. have checked and replaced or stopped all vac breaks. most recently within the past 3 months the fuel filter, and within the last 2 weeks the fuel pump. it does take a second to get the truck to turn over like the fuel is not getting there immediately.
May 19, 2023 at 10:31 PM
