Which engine? You may have to do a throttle body reset
Ford throttle body relearn procedure Ricks Free Auto Repair Advice
SOURCE: 2002 Ford F150 Supercrew - Electrical problem! Help!
dk mak r
As a retired electrical engineer this intrigues me. If you were my neighbor I would put an ammeter in series with the batteery lead to see just how much current is being drawn by the "mystery" load.
When you disconnect or hook up the battery can you see any sparks when the cable touches the battery terminal?
If the battery can get run down over night that is a significant drain.
If there is some sign of spark when you connect/disconnect the battery lead try the following.
Selectively remove a fuse in the fuse panel, (starting with the larger fuses, 15A, 20A) and then connect the battery terminal and see if you still have a spark.
Hope this helps Good luck Loringh
SOURCE: 2001 FORD F150 ENGINE SURGES AND DIES AT IDLE
Check all of your vacume lines. If it isn't a vacume line it is most likely the O2 sensor.
SOURCE: 2006 ford expedition,r/r th ac compressor,on
no take the belt off then pull the a/c compressor out
SOURCE: I have 1990 Ford F150 with 2 gas tanks.Electric
check fuel relay under the hood..it may be blown..look in owners manual for relay location.
1Raise the front end of the F150 off the ground with the floor jack. Place the two jack stands under the front portion of the F150's frame and then lower the truck onto the jack stands.
Open the hood and disconnect the negative battery cable end from the battery using the battery wrench. Push the cable off to the side where it can't accidentally contact the battery during the repair process.
Climb under the front passenger side of the F150 with the socket set. Locate the starter, which bolts to the side of the engine, where the transmission bell housing meets the back side of the engine block.
Unbolt the starter ground wire and wiring harness using the socket set. Move the wires aside.
Hold the body of the starter with one hand while removing the two starter mounting bolts with the other, using a socket set to do so. Never let the weight of the starter bear down on the loose bolts.
Pull the starter out by hand once you have removed both of the mounting bolts. Compare the old starter to your replacement, making sure they are physically identical before proceeding with the installation of the replacement unit.
Hold the replacement starter in position and thread the mounting bolts through the starter flange and into their mounts. Tighten them down with the socket set. Remember to never let the weight of the starter hang on the loose bolts.
Attach the ground wire and starter wiring harness in reverse of disconnection.
Lower the F150 off the jack stands with the floor jack and then reconnect the negative battery cable using the battery wrench.
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Fig. 3: Oil pan bolt torque sequence-4.6L engine (click over pic fo zoom).
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