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TwistedMetalMan 05-22-2006 01:05 AM

Secondary Fuel pump failure
 
I have seen several fords running a secondary fuel pump failure code with no real effect on preformance. I have recently converted a v6 ranger that posted the code to a V8 and it still shows the same code. Different main harnes, computer and pump. Does anyone know what this code truely means, or what I may do to eliminate this.

TENGRAM 05-22-2006 01:16 AM

RE: Secondary Fuel pump failure
 
the one time i got this code was because i had tripped the...F, drawing a blank here, uh, the inertia switch in the back under the trim panel. showed as a continuous memory code. after i cleared codes it never came back.

TwistedMetalMan 05-22-2006 01:23 AM

RE: Secondary Fuel pump failure
 
That's the problem, the code post's as it's running. I clear all codes and then check again, the only thing is the dang same code. I can guarantee the inertia switch is not a factor.

BTW The block currently sits in a ranger that originally had a two pump system. It has been converted to one high pressure pump in tank but I don't know if the computer looks for any sort of resistance / load or anything.


TENGRAM 05-22-2006 01:47 AM

RE: Secondary Fuel pump failure
 


ORIGINAL: TwistedMetalMan

That's the problem, the code post's as it's running. I clear all codes and then check again, the only thing is the dang same code. I can guarantee the inertia switch is not a factor.

BTW The block currently sits in a ranger that originally had a two pump system. It has been converted to one high pressure pump in tank but I don't know if the computer looks for any sort of resistance / load or anything.


that is strange. it doesn't run any different? there is not a lot to that part of the fuel system. i suggest you find the proper wiring diagram and check for 12v source at the connector, as well as resistance from ground to chassis at connector and at the correct ecm connector pin. should be less than 5 ohms.

TwistedMetalMan 05-22-2006 02:00 AM

RE: Secondary Fuel pump failure
 
This is my dilemma, I have a full 12V at the fuel pump connecter and less than 0.5 ohms on the ground side. I was thinking that maybe it had something to do with only having one pump in a two pump circuit or that I had had the pristine opportunity to stumbling onto two computers with the exact same code....


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