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FUEL PUMP DEAD?

This is a discussion on FUEL PUMP DEAD? within the Grizzly Engine & Transmission forums, part of the Grizzly Forums category; how to do you find out if the fuel pump is dead or not? I went riding this weekend, we stoped for lunch, and cranked ...


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#1
09-06-2009, 10:32 PM
FUEL PUMP DEAD?

how to do you find out if the fuel pump is dead or not?

I went riding this weekend, we stoped for lunch, and cranked back up for another ride. I rode for 20 yards and the POD went black, then blinked, then lit up just solid green, nothing else. Now, I replaced the 15 amp that blew on the starter solenoid, and now it just turns over, and over. the fuel pump is not priming/turning on.

I checked the small fuse box that holds about 6 fuses and nothing. I checked the relays and they are all clicking and working. I turn the ingition key and it shoots a signal to the pump and shuts off as its supposed to, to set the prime.

I got no codes on the pod. so I am lost. I pulled the relay for the fuel system and touched the blue/red wire with the light tester to see if it gets power, it shoots a code 43, then goes away when I let go.

Can the fuel pump go out this quickly?
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#2
09-06-2009, 11:41 PM
Fault code No. 43 Symptom Power supply to the injector and fuel pump is not normal.
Diagnostic code No. D09 Fuel system voltage
Order Item/components and probable
cause
Check or maintenance job Reinstatement
method
1 Connections
Fuel injection system relay

Main wire harness-ECU coupler

Check the coupler for any pins
that may be pulled out.

Check the locking condition of
the coupler.

If there is a malfunction, repair it
and connect the coupler
securely.
Starting the
engine and
operating it at
idle.
2 Open or short circuit in the wire
harness.

Repair or replace if there is an
open or short circuit.

Between fuel injection system
relay coupler and ECU coupler.
(blue/red
blue/red)
(red/blue
red/blue)

Between fuel injection system
relay coupler and starter relay
coupler.
(brown/black
brown/black)

Between fuel injection system
relay coupler and left handlebar
switch coupler.
(red/black
red/black)
3 Malfunction or open circuit in fuel
pump relay.

Execute the diagnostic mode.
(Code No.D09)

Replace if defective.

If there is no malfunction with the

relay unit, replace the ECU.
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#3
09-07-2009, 06:40 AM
you can put a fuel pressure gauge in line and check pressure or if ya don`t have a guage disconnect the fuel line and see if any fuel comes out (not the right way but works) that won`t give you a pressure reading but will let you know if the pump is working. You can try spraying carb clean in the throttle body and see if it starts then you will know it has spark if it starts. You can also put a noide light in the injector harness and see if it flashes when you crank it.
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#4
09-07-2009, 08:07 AM
ok, since im not ridding today, I will try all these options and see where it leads me.
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#5
09-07-2009, 09:33 AM
well crap.... I got a hunch...I had the harness unplugged from the fuel pump, I took my light tester and got power to the red wire as discribed before. I got a low light on the little green/yellow wire. SO, I pluged the harness back in, and the hit the key, the fuel pump primed, now I hit the little green button and it kicked over.

now it wont prime again and I get no voltage to the green/yellow wire.

I pulled the ECU/brain ( Im thinking she is a blonde now) and reconnected it, still no prime...

I have talked sweet/dirty and still no go.
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#6
09-07-2009, 09:55 PM
anyone got a ECU laying around?
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#7
09-07-2009, 10:07 PM
I had a problem with the relay for the fuel pump. It would work on and off. What was different than your problem is that mine would work fine, I would shut the bike off and it wouldn't restart due to the pump not working.

The relay was like $30 so you may want to try this option first if you don't find the problem.
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#8
09-08-2009, 08:23 PM
ok, its not relay related! relay does its job. sends the pump a signal and when you hit the start button, its sends a constant signal to the pump...HOWEVER, the pump is not coming on.

so, anyone got a good lead on a new pump assembly less than 300?



BTW, the green wire thats on the plug goes to the fuel gage, if anyone is interested in what it does.
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#9
09-09-2009, 06:28 AM
theres a aftermarket automotive fuel pump that works for the King quads.If you have a good parts store around they should have a specs book for fuel pumps that will give you measurements and psi ratings. E-bay is your friend I have seen a few 700`s being parted out on there.


Make sure your ground at the fuel pump is good.

Last edited by Mad Mike; 09-09-2009 at 06:29 AM..
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#10
09-10-2009, 09:00 AM
THANK YOU EVERYONE!!!! Its nice to see that there is always help out there without paying $65 an hour to let your bike sit for 2 weeks!

This site ROCKS !!!

I am up and running with a new fuel pump.....
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#11
09-10-2009, 04:31 PM
were and how much
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#12
09-10-2009, 09:48 PM
$100 used. came off a bike with 178 miles, I found it through word of mouth.
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