Secondary fuel pump circuit failure

SOURCE: 1992 ford ranger

If this speratic problem seams to happen most when it's raining or damp, it is a shorting master contol that is to blame. The master control mother board is located on the firewall. Over time, the moisture seal on the cover fails and the motherboard gets damp and meny false signals are sent. This can even happen if the truck is off and key is not in the ignition (this mother board will alwas have power going to it as long as the battery is connected). A cheap way to check this is to remove the cover, put a plastic grocery bag over the mother board and use an small elastic band to close the open end, allow the wires connected to the mother board to go out the open end. If this solves the problem, replace the seals on the master control cover. Care should be taken as if there is ANY corrossion on the mother board, it will need to be replaced.

SOURCE: tapping or knocking noise in 2009 f150 4.6 3v engine

Tell them you heard about a recall for the CAM PHASERS. When the noise is present and you rev the engine to 2000RPM the noise will fade away. This verifys the CAM PHASERS are acting up.

Usually the sound progresses to the DIESEL level. Further use can damage the engine. There is a service bulletin for this problem. Yours must be an early 2009, last I heard the problem was for 2004-2008 models with dual cams.

SOURCE: truck won't start, can't hear either fuel pump 1992 Ford F 150 5.

If you can't hear the fuel pump when you turn the key to the on position trying to build up fuel pressure, it is most likely either a voltage issue at the fuel pump or you need to replace the fuel pump. Have you checked your fuel filter? Try turning on the key without engaging the starter and see if you hear the whine of the fuel pump.

Good Luck

SOURCE: 1991 F150 5.0L, The fuel pump relay clicking

check your relay and your fuel filter should be replaced every 30,000 miles

Testimonial: "Thank you for your help! Truck decided to run good today!"

SOURCE: Fuel pump replacement on a Ford F150 truck

There are two ways to do this. One, would be to drop the tank. If the tank is full then I would remove the bed. If it is empty then dropping the tank would be easier.

To remove the bed you disconnect the tail lights, tag light, and fuel hose. then, with one person on each side, pick up the bed and set it on the rear wheels and bumper. Then you will be able to access the fuel pump which is screwed into the top of the tank. It will have a lock on it that requires a specialized tool. If you dont have it I used a flat head screwdriver and tapped on it with a hammer.