Fuel Pump Comes On When Charging Battery
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this has been talked about early on and i think its to do with once it starts to charge above a certain voltage it activates the pump.
the trick that alot use is just to disconnect the big plug that goes into the relay under the seat.
i was worried about this but have found the optimate 4 charger that my '09 is always hooked up to when in the shed doesnt activate the pump.
the trick that alot use is just to disconnect the big plug that goes into the relay under the seat.
i was worried about this but have found the optimate 4 charger that my '09 is always hooked up to when in the shed doesnt activate the pump.
You have to disconnect the black (-ve) battery terminal. You have to read the owners manual really carefully to pick up this vital little bit of info.
Also, when you are disconnecting the terminal, don't let the little nut fall into the battery box...
Also, when you are disconnecting the terminal, don't let the little nut fall into the battery box...
Okay,
I have a "battery tender". I take my seat off when I put it on, and just pop off the fuel pump connector to keep the fuel pump from cycling. I personally don't see the need to disconnect the ground on the battery.
These types of chargers using a rising and descending level of voltage until it sees the voltage it wants to before going into "float" mode, to the best of my knowledge this is called "peaking" and helps in cleaning the plates. RC people do this to keep their batteries to keep from getting a memory. You can see this if you put a good volt meter on it. This causes the power relay to pick up and when that happens the fuel pump comes on. On the battery tender you can see when it's doing this b/c the little green light is flashing. Once it goes to solid green this doesn't happen anymore. On my bike it will only cycle the fuel pump once, but, I disconnect it anyway.
Once the battery tender goes into float, it rarely goes into this cycling as it holds right around 13 volts.
I have a "battery tender". I take my seat off when I put it on, and just pop off the fuel pump connector to keep the fuel pump from cycling. I personally don't see the need to disconnect the ground on the battery.
These types of chargers using a rising and descending level of voltage until it sees the voltage it wants to before going into "float" mode, to the best of my knowledge this is called "peaking" and helps in cleaning the plates. RC people do this to keep their batteries to keep from getting a memory. You can see this if you put a good volt meter on it. This causes the power relay to pick up and when that happens the fuel pump comes on. On the battery tender you can see when it's doing this b/c the little green light is flashing. Once it goes to solid green this doesn't happen anymore. On my bike it will only cycle the fuel pump once, but, I disconnect it anyway.
Once the battery tender goes into float, it rarely goes into this cycling as it holds right around 13 volts.
ahoolsema said:
Right next to the fuel outlet from the tank is a connector, it is the fuel pump power supply. Just lift up on the tab slightly and push down, the plug will come right out. I pull up slightly on the connector and leave it laying there so that when I disconnect the battery tender I see that I need to put the plug back in.
The power relay is on the down tube and is kind of hard to get to. Much easier to just disconnect the fuel pump power supply.
I had the same thing happen to me , i bought my charger from Supa Cheap Auto and the fuel pump would come on , i just take the fuse out when charging ,, I am led to believe if you buy the charger from the Husa Berg hard parts catalogue that the pump does not come on when plugged in ... here in australia the berg charger is about $ 90.00 the Supa Cheap Auto charger was only $ 45.00.
I use an intelligent multi phase wall mountable 'Battery Fighter' on the bike for the last 2 weeks and havent had a problem at all. I keep a short lead permanently connected directly to the battery terminals, and plug my GPS or battery charger in to that when required.
http://webcache.googleusercontent.com/s ... clnk&gl=au
Regards
fizz
http://webcache.googleusercontent.com/s ... clnk&gl=au
Regards
fizz
Hi all ...been lurking here for many months and picked up an 2010 fe450 yesterday and this will be the first of a few questions
Can someone please confirm that the negative terminal on an fe450 (yuasa) is on the left hand side looking from the rear of the bike ?
Also which is the plug that people are unplugging rather than disconnecting the negative batt terminal lead ?
Thanks
Mdc
Can someone please confirm that the negative terminal on an fe450 (yuasa) is on the left hand side looking from the rear of the bike ?
Also which is the plug that people are unplugging rather than disconnecting the negative batt terminal lead ?
Thanks
Mdc
I hooked up a Battery Tender today on my fe390 and was planning to leave it plugged in with the quick connect wiring whenever not riding. I unplugged the fuel pump as described on these forums and it stopped making noise, but the EFI light still cycles every second or so. Is there something else I need to disconnect to avoid having to disconnect the negative battery terminal? I read the efi light will stop lighting when the battery is charged and goes to float mode. Can anyone confirm if this is true and that it won't hurt anything to ignore it? Thnx
I think it had been connected about 10 minutes when I still saw it happening. That was an hour ago so I checked it again just now and confirmed it isn't doing it anymore. I just wasn't sure if there was any risk when it is doing that, even if only for a short while. Sounds like rhe answer is there is nothing to worry about though.
- Joined
- Jun 30, 2005
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- Kings Farth
Does it happen by chance or is the EFI designed to dump some battery charge to keep the voltage down?, by starting the pump?
Even if your battery voltage as read on a voltmeter is reasonable, the ripple peak voltage from the charger might be higher, depending on charger, especially when the battery is fully charged or gone bad. If you disconnect the pump it wont start but then it will not dump any charge either...
:?:
Even if your battery voltage as read on a voltmeter is reasonable, the ripple peak voltage from the charger might be higher, depending on charger, especially when the battery is fully charged or gone bad. If you disconnect the pump it wont start but then it will not dump any charge either...
:?:
DaleEO said:
I rode 40 miles yesterday before hooking it up to the charger. I just bought the charger this week though and this was only the second time hooking it up. I've been riding about once a week since getting the bike earlier this year so I think the battery is strong.
Right on,
I was just curious if the bike had been sitting for a while. After I've ridden mine for extended periods, and then disconnected the fuel pump, and I hook up the charger, the power relay will pick up once as the battery tender starts it's charge cycle, and then it doesn't do it anymore.
Dale
I was just curious if the bike had been sitting for a while. After I've ridden mine for extended periods, and then disconnected the fuel pump, and I hook up the charger, the power relay will pick up once as the battery tender starts it's charge cycle, and then it doesn't do it anymore.
Dale
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