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no voltage at the fuel pump ?????


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I've chech almost everything

the pump work

the resistor on the fender show 1.2 homs

all fuse link are ok

all relays are ok

but I get no voltage at the pump and at the conector #157 behind the kick panel on LH side

the only thing I have not check is the engine CPU

 

 

is there a sensor or something other then the ones mention above that, if it does not work, won't allow voltage at the pump?

 

 

TY

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Did you check the fuel pump relay on the right inner fender? there are 4 relays between the starter relay and the diagnostic connectors. from front to back they are oxygen sensor heater relay, fuel pump relay, power latch relay, a/c clutch relay. If all are ok it may be a broken wire.

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I've chech almost everything

the pump work

the resistor on the fender show 1.2 homs

all fuse link are ok

all relays are ok

but I get no voltage at the pump and at the conector #157 behind the kick panel on LH side

the only thing I have not check is the engine CPU

 

 

is there a sensor or something other then the ones mention above that, if it does not work, won't allow voltage at the pump?

 

 

TY

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I will check that seems resonable that a wire would be bad to the relay

 

I was about to start checking that because all components of the circuit are good

but as you know there are a lot of wires to check ............ :mad:

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all right, fault finding done and I got no power comming from the fuzelink wire

I also tested continuity between the #87 prong and the relay and the #139 connector at the fuel pump and its all good

I did replace the fuzelink with a fuse holder

 

a 20 gauge fuzelink = how many amp fuse???????

just to make sure I'm not putting a fuse to big for the circuit 20A I'm guessing

 

the prob is between the starter relay and the #30 prong on the fuel pump relay

 

tomorow I will open the wire pack and look for the faulty wire if I can't find it I will just put a new one

 

more to follow

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well the asd relay kicks in

the CPS is ok and the cam sensor to

 

any ideas to what to check next

what can cause the asd to activate ?

 

the truck is sold and I need to get it going please input on this............

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  • 3 weeks later...

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