A friend changed his plugs and wires, cap and rotor the other day and now the truck won't stay running. It starts fine, runs fine, but if you let off the gas and it gets down to idle it just dies. I'm wondering if anyone has ever had this problem before. I'm thinking he may have used the idle air control motor as an arm rest and egged it or something so the plunger is stuck. I checked and double and triple checked the wires and cap and rotor and everything's in order. And it runs fine, as long as it's not at idle.