Truck idle surges and dies out.
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Joined: Dec 2016
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Truck idle surges and dies out.
05 F150 5.4L 3v
I just changed COPs and plugs, cleaned the MAF and throttle body, changed fuel and air filter, and check valve. When I fire up the truck the engine, the engine runs up to about 1500rpm and then goes to a normal idle and after about a minute the idle starts to fluctuate from normal to about 450-500rpm a couple of times and then the engine dies out. Who has a clue as to what's going on? Also, Crank Position Sensor has been changed. This is frustrating.
I just changed COPs and plugs, cleaned the MAF and throttle body, changed fuel and air filter, and check valve. When I fire up the truck the engine, the engine runs up to about 1500rpm and then goes to a normal idle and after about a minute the idle starts to fluctuate from normal to about 450-500rpm a couple of times and then the engine dies out. Who has a clue as to what's going on? Also, Crank Position Sensor has been changed. This is frustrating.
