2005 Ford F-250 Repair Question
Topics covered: Crankshaft, Engine, Fuel filter.
Mileage: 125,000 miles.
Mileage: 125,000 miles.
Asked on December 8, 2012
Ford F-250 Crankshaft Problem
I'm working on a 2005 Ford F-250 4 wheel drive with 5.4L 3v gas engine. On occasion it will not start, it will crank over fine but not start. Usually after 2 or three key-off, key-on sequences it starts. More often than not it will start first time.
I have replaced the fuel filter, fuel pump, and pump driver. I listened to the bottom of the tank while a friend cycled the ignition to "on" and the pump was ...."On'.."On".."On"..off..off."On".."On".....etc. no rhyme or reason. My next point of attack is the crankshaft position sensor.. unless someone has a better idea?
Thanks
I have replaced the fuel filter, fuel pump, and pump driver. I listened to the bottom of the tank while a friend cycled the ignition to "on" and the pump was ...."On'.."On".."On"..off..off."On".."On".....etc. no rhyme or reason. My next point of attack is the crankshaft position sensor.. unless someone has a better idea?
Thanks
Asked by thomasnchyAnswer
Replied on December 8, 2012
what is the fuel pressure???
Roy
Replied on December 8, 2012
I was only able to read it with my scanner at idle and it was @40psi, after I replaced the pump. I havent hooked it back up since I installed the driver.
Replied on December 8, 2012
When the pump cycled to "on" I had him go ahead and start the truck and it ran fine at idle and wot. When I didn't here the pump kick on the truck (of course) would start but die shortly- maybe 5-6 seconds rough idle.