INTERMITTENT - HAVE TO HOLD KEY TO START POSITION FOR 3-5 SEC BEFORE STARTS.
2000 Ford Explorer
September, 25, 2013 AT 4:26 PM
2000 4.0 SOHC v6, starts right up most of the time then at times I need to hold the key in the start position for a few seconds before the truck starts. You can hear the fuel pump kick on and I have tested the fuel pressure which is within specs. And can always here the starter going. I have cleaned MAF sensor and have cleaned my Idle Air Control Valve. Checked the connections on the starter and all are good. New battery.
If the starter is cranking, my guess is that the fuel pump is losing its prime when the key is shut off and taking a few seconds to build pressure. When you checked it for pressure, was it within the manufacturer's specs? Did you pay attention to pressure drop off?