A few weeks back fuel pump went out ( no noise at all) changed it. Still doesn’t start no gas is being pumped The pump is buzzing so it’s working I went ahead and got a circuit tester and checked fuses while key forward to my surprise fuses 7,8,9,23,25,35,36 relays 4,6 ,202,201 have power someone please shed some light to my Situation please
Help 06 expy multiple fuses no power
- Thread starter FMP Mtz
- Start date
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stamp11127
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Welcome to the site.
Just because you hear noise from the pump doesn't indicate you have fuel pressure. You should have @35psi with KOEO(key on engine off).
By "doesn't start" do you mean the engine turns over but isn't running once cranked?
Just because you hear noise from the pump doesn't indicate you have fuel pressure. You should have @35psi with KOEO(key on engine off).
By "doesn't start" do you mean the engine turns over but isn't running once cranked?
It just cranks but it does not turn over I have no way of checking fuel pressure without a gage
stamp11127
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Most auto parts stores will rent the gauge. Check with your local stores for loaners or rentals.
Why does the title of this thread say no power to fuses and in your post you state they do have power?
Why does the title of this thread say no power to fuses and in your post you state they do have power?
There’s no power to the fuses I listed according to the circuit tester...I just don’t know where to start
1955moose
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I know this is going to sound stupid, so don't shoot me, but did you test test light before starting. I've had my regular test lights that blew a bulb.
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Sent from my N9131 using Tapatalk
stamp11127
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Fuses per 2006 user manual:
7 - radio
8 - rear window defrost
9 - not used
23 - rh low beam
25 - lh low beam
35 - cluster high beam indicator, high beam headlights
36 - trailer tow right turn/stop
These have nothing to do with a no start condition.
7 - radio
8 - rear window defrost
9 - not used
23 - rh low beam
25 - lh low beam
35 - cluster high beam indicator, high beam headlights
36 - trailer tow right turn/stop
These have nothing to do with a no start condition.
Really wow so what can it be? I was reading that these models have a fue relay inside the fuse box that goes bad you think that’s what I’m dealing with? Because it turns over with starting fluid (only sprayed it once) but it dies like in a 5 seconds.
Yes I did test light but what was odd and had me all panicked was that I took the fuse out and checked for power and still had none. Had me scratching my head... but those fuses have nothing to do with the truck not starting so I’m still scratching my head lol
stamp11127
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Look at the sticky in the electrical section for the proper way to check fuses with a test light.
I'll look at the wiring diagrams this afternoon and let you know the next step.
I'll look at the wiring diagrams this afternoon and let you know the next step.
What do you mean the sticky?
stamp11127
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https://www.expeditionforum.com/threads/fuse-testing-101.24587/
If you can read & understand wiring diagrams I've included 2 for the engine controls. The items to check in the fuel pump circuit are the driver module and fuel pump relay.
If you can read & understand wiring diagrams I've included 2 for the engine controls. The items to check in the fuel pump circuit are the driver module and fuel pump relay.
View media item 6737I got to it this afternoon I checked the green and yellow wire at the fuse box it had power ( key switch was to ON position) went to the rear by the spare tire I unplugged the fuel pump module and only wire that had power was the white wire which according to the diagram comes from the fuel shut off valve.. what’s the next step
Vancouver Bob
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This is going to sound even stupid'er (ok... dumber
)... but when you say you replaced the fuel pump... you dropped the fuel tank and replaced the fuel pump inside, right?Yes that is correctThis is going to sound even stupid'er (ok... dumber
stamp11127
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Check continuity from the fuel pump driver module to ground - shown in 2006.2, pin 3 to ground point G403
Check power output on pins 2 and 4 to ground. We don't know which is positive so check each to the ground point with the meter. If it isn't using pwm signals the meter should show something(12v). If it is a pwm signal the meter may not respond fast enough to get a reading.
Test while someone cranks the engine. The signal may only be present for 1-2 seconds.
Check power output on pins 2 and 4 to ground. We don't know which is positive so check each to the ground point with the meter. If it isn't using pwm signals the meter should show something(12v). If it is a pwm signal the meter may not respond fast enough to get a reading.
Test while someone cranks the engine. The signal may only be present for 1-2 seconds.
stamp11127
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Looks like the fuel pump driver module went south. To verify you would need to scope the signal/voltage to the pump or toss a new module in and see if it starts. Rock Auto has two brands of them for less than $75.
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