Fuel pump wiring problem
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From: Easton,Ks
Originally Posted by Sailfish83
How would I check if it is changing states?
In one state the Red will have power and the Brown with white stripe will not.
In the other state the Brown with white stripe will have power and the Red will not.
Or have some one switch tanks in the cab while you hold your hand on the Relay or put your ear on it and see if it clicks.
How are the photos coming?
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OK. Tonight I tried to see if I could get any fuel near the carb. I un connected the starter wire on the starter relay so I could hear what pump was running. I un-did the main fuel feed line by the carb. No gas. So I thought I would experiment with those ground wires on the cut-off relay and the pump selector relay. I re-configured them. The cut-off relay has 2 black (I think they are black?) wires. One looks like it is in the same hole as the resistance wire on the cut-off relay. I butt connected that to the firewall ground. The other black wire on the cut-off relay I butt connected to the black wire that comes out of the pump selector relay. I re-tried turning the key to start to check the pumps against the tank selector switch on the dash. It now works like it is supposed to according to the selector switch. I am now getting gas to the carb. I re-connected the starter
wire to the starter relay. The truck started but will not stay running as the pumps stop once the truck is started. I tried to put a jumper wire into those 2 connector holes on the 2 wire oil pressure connector but the truck still would not stay running. Now what?
Eric
wire to the starter relay. The truck started but will not stay running as the pumps stop once the truck is started. I tried to put a jumper wire into those 2 connector holes on the 2 wire oil pressure connector but the truck still would not stay running. Now what?
Eric
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From: Easton,Ks
Originally Posted by Sailfish83
I can't find this 2 wire switch for sale anywhere. Does anyone know who may sell these? All the oil pressure switches I am finding look like the "Bell" shaped pressure sender/switch.
Here is one from NAPA.
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From: Virginia
Originally Posted by Sailfish83
I am getting 12v to one side of the 2 wire connector.
Fleet Owner
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From: Easton,Ks
Originally Posted by Sailfish83
Yes. I did that and it does click. What does that mean?
EDIT Did you hear the Fuel Pump run that the dash switch was set to every time you put the jumper in with the key on and the engine not running?
Last edited by subford; Jul 13, 2006 at 07:20 AM.
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No I did not hear the pumps run. I just heard a click from the relay. I did not have a very good connection with the jumper wire. I had to wiggle it a little. I also blew the #18 fuse after I did it a couple of times. I should have heard the pumps running in RUN and START positions? How come mine didn't?
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From: Easton,Ks
Originally Posted by Sailfish83
No I did not hear the pumps run. I just heard a click from the relay. I did not have a very good connection with the jumper wire. I had to wiggle it a little. I also blew the #18 fuse after I did it a couple of times. I should have heard the pumps running in RUN and START positions? How come mine didn't?
If so did you re-hook the Fuse Link "S" to the Battery Connection at the Starter Relay?
In other words do you have power on the Yellow wire at the "FUEL CUTOFF RELAY"?
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I don't know if the yellow wire has power. I have not checked that one. I will tonight. That wire is fuse link "S", yellow at the shut-off relay but blue at the Starter relay, correct? It should have power at all times?
edit: Could the inertia switch be tripped? Where is the inertia switch located?
edit: Could the inertia switch be tripped? Where is the inertia switch located?
Last edited by Sailfish83; Jul 13, 2006 at 12:16 PM.