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Answered 2015-07-15 21:34:38

Start with a good tune up. Plugs, wires, cap, rotor air and fuel filter.

Start with a good tune up. Plugs, wires, cap, rotor air and fuel filter.

There is a small module about 2 inches by 2 inches---- actually 2 of them, one for intake, one for exhaust. They have heat dissipating fins on them with 2 wire connector assemblies (in and out). One set of wires goes to ignition coils, other side goes to power source. On mine one was malfunctioning and it took me changing the whole ignition system to figure it out. May be best to change both at the same time if you have the cash (Cheapest on line). I didn't and truck runs magnificent. The intake coil fires all the time but the exhaust coil shuts off about mid to high throttle to prevent misfire and preignition under load. when the truck cuts out under load, hard throttle or the tach. becomes inop. a malfunctioning intake control module is typically the problem.

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