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Temporary fuel pump power wire

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Old 05-18-2018, 11:27 PM
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Temporary fuel pump power wire

I'm done screwing with trying to find the source of 'no power' to my high pressure fuel pump. I need to move this truck under it's own power to satisfy the zoning ****'s who have taken over the town. Anything that is parked on the grass (in my case an overgrown gravel parking pad) is in violation and the girl in charge of enforcement visit's my sister's beauty salon across the street every two weeks. I went round and round with them for three months until I got a bonded title for my truck in March. I don't want to see their mugs anymore...

So I'm going to install an on-off toggle switch run from the fuel pump power with to the battery. I'll use 20 amp in-line fuse similar to what I replaced the 20A fusible link with last week.

Anyone see any problems with this? I'll go back to looking and repairing the real problem later...
 
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Old 05-19-2018, 08:47 AM
bdelmar2
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Race car guys do something similar all the time so it should be fine I imagine.

Shortly after I first got my truck running the computer went out and wouldn't run the fuel pump so I got by for a couple days running a ground wire to the test terminal under the hood. Plug the wire in, start the truck, shut the truck down, pull the wire. Kind of a pain, but it worked.
 
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Old 05-19-2018, 11:15 AM
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I like the way you think...
 
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Old 05-19-2018, 01:06 PM
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Could always put a momentary button on it to start the engine, and have an oil pressure switch that takes over afterwards. That way, if the engine stalls the pump cuts out and doesn't stay running.
 
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Old 05-19-2018, 05:47 PM
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Do your pumps run with the OBD test connector is jumped ? pins 2 & 6.......
 
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Old 05-19-2018, 11:31 PM
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Originally Posted by vjsimone View Post
Do your pumps run with the OBD test connector is jumped ? pins 2 & 6.......
Ill try that Sunday....
 
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Old 05-19-2018, 11:34 PM
Nikki Hampson
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Funny u mention fuel problems....

I ran a toggel for my fuel pump as well took 3 weeks and a lot of money before i ran the toggle.... Its been almost a year now and its still working lol any ideas on were to look for the power problem would be helpfull.... i have power at the silinoide but no further hence the toggle.... and if there is any way to get the fuel gauge to work ...... any replies are welcome good or bad thank you for reading...
 
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Old 05-20-2018, 12:58 AM
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Originally Posted by Nikki Hampson View Post
I ran a toggel for my fuel pump as well took 3 weeks and a lot of money before i ran the toggle.... Its been almost a year now and its still working lol any ideas on were to look for the power problem would be helpfull.... i have power at the silinoide but no further hence the toggle.... and if there is any way to get the fuel gauge to work ...... any replies are welcome good or bad thank you for reading...
Nikki , I recommend you start your own thread for your issue.
 
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Old 05-20-2018, 08:10 PM
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Originally Posted by krooser View Post
Ill try that Sunday....
Well still no power to the fuel pump. I bumped up another thread from a guy having the same problem that was resolved by replacing the PCM. Might have to pull that out to take a peek. Won't be able to get to it until next weekend... my two days per week PT schedule will be 14 hours per day this week everyday... no time for monkey business!!!
 
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Old 05-20-2018, 08:17 PM
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Originally Posted by krooser View Post
Well still no power to the fuel pump.
So, you did this;?
"Do your pumps run with the OBD test connector is jumped ? pins 2 & 6......."

and your pumps did not run?
 
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Old 05-20-2018, 08:21 PM
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Originally Posted by vjsimone View Post
So, you did this;?
"Do your pumps run with the OBD test connector is jumped ? pins 2 & 6......."

and your pumps did not run?
Did not run...
 
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Old 05-20-2018, 08:29 PM
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Originally Posted by krooser View Post
Did not run...
if that didn't work (providing you selected the correct connections) then your EECM/Computer is not the problem.

you should check for power at the Fuel Relay Socket, there is a red wire there that should have batt voltage 12v+/-, with the key on.
Also, check the Yellow wire at the Fuel Relay Socket, with the key on, you should have batt Voltage there as well.
 
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Old 05-20-2018, 08:42 PM
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Connector plug;
Pin 2 - SIG-RTN
Pin 6 - Fuel Pump
 
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Old 05-20-2018, 08:49 PM
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Are you familiar with the Inertia Switch above the brake pedal ?
 
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Old 05-20-2018, 09:16 PM
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Did you hear your FPRelay clicking when you connected/disconnected Pins 6 & 2 on the test connector ?
 
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