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BMW GS Fuel Pump Controller
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TOPIC: BMW GS Fuel Pump Controller

BMW GS Fuel Pump Controller 9 years, 2 months ago #315

  • Outsider
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Guys,

As some of you may know my fuel pump controller died a few weeks ago. I really wanted a proper fix for a number of reasons (buying a new one isn't a fix) so I thought I'd take a look-see.

I'm sharing what I find on my little-used blog and you're welcome to take a gander. I was going to wait until I had a conclusion, but hell, someone may be able to provide some insights or take something useful from what I've done so far. I have some stuff to get out of the way and when done I'll get back on to it.

For the last week or so I've been running a bodged bypass cable, but I'm not happy risking it. After speaking to GB yesterday, I've ordered a replacement and this will allow me to investigate further in my own time. Anyhoo, if you're interested, my first post is here: outsider-hub.blogspot.com/2012/02/bmw-r1...pump-controller.html

(Mods: feel free to re-categorise)
The following user(s) said Thank You: East Coast

Re: BMW GS Fuel Pump Controller 9 years, 2 months ago #318

Wow, that's what i like reading, great blog, a genuine big thank you and thumbs up for that mate

Is that a lead free PCB I wonder? You would need to go some to lift the legs off on that FET, it would normally pull the pad off the board, not the lead off the pad?
The following user(s) said Thank You: Outsider

Re: BMW GS Fuel Pump Controller 9 years, 2 months ago #319

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East Coast wrote:
Wow, that's what i like reading, great blog, a genuine big thank you and thumbs up for that mate

Is that a lead free PCB I wonder? You would need to go some to lift the legs off on that FET, it would normally pull the pad off the board, not the lead off the pad?

Thank you. I really want to solve this.
I think I saw 2007 on the board, was lead-free mainstream by then?
It's probably not clear in the pic, but the pad had come away from the board. It looked intact as it was still attached to the lead. I couldn't imagine I'd done it either, but can't be sure

Re: BMW GS Fuel Pump Controller 9 years, 2 months ago #356

Outsider wrote:
East Coast wrote:
Wow, that's what i like reading, great blog, a genuine big thank you and thumbs up for that mate

Is that a lead free PCB I wonder? You would need to go some to lift the legs off on that FET, it would normally pull the pad off the board, not the lead off the pad?

Thank you. I really want to solve this.
I think I saw 2007 on the board, was lead-free mainstream by then?
It's probably not clear in the pic, but the pad had come away from the board. It looked intact as it was still attached to the lead. I couldn't imagine I'd done it either, but can't be sure


Funny, I can never throw anything away or replace it without either trying to fix it, or at least working out why it broke in the first place, I seem to spend hours against all reasonable economics, still I'm not as bad as some, a mate of mine once spent a whole day doing something along the lines of building a new charging circuit for a £5.99 dust buster . I would probably draw the line at that but what you're doing is right up my street

I would say that 2007 was probably still in the change over period to lead-free though some companies were started using it as early as around 2001, maybe even slightly before that. An electronics assembly company in Cambs that I used to use were changing over in around 2005 and I think the PCB manuf. were also starting to tin the boards with led-free. (I hate the stuff BTW )

Ah ha, that, makes sense, with a sharp screwdriver you would still need some real brute force though un-potting something sometimes requires it .

If the PCB is con-formally coated, I think that's the term?.. coated to resist moisture or is that to insulate it, I can't remember now?, then my money would probably be on the power side being at fault and those FETS can get pretty hot in the transition phase between on and off if that makes sense. They can also fry pretty easily with even a very short over current.

Good luck and I will look forward to your next update
The following user(s) said Thank You: Outsider

Re: BMW GS Fuel Pump Controller 9 years, 2 months ago #405

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Here's an interesting link for those with a GS1200 fuel pump worries www.advrider.com/forums/showthread.php?t=453119
Rather be loud than lazy......
Last Edit: 9 years, 2 months ago by GB.

Re: BMW GS Fuel Pump Controller 9 years, 2 months ago #406

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GB wrote:
Here's an interesting link for those with a GS1200 fuel pump worries www.advrider.com/forums/showthread.php?t=453119

I saw that thread when looking into the issue, but I really wanted a fix rather than a work-around. Now that I've had to order a replacement controller, I'll have the connectors to use on a small bypass cable if I can't repair it.
I'm surprised no one has found a fix yet.
Last Edit: 9 years, 2 months ago by Outsider.

Re: BMW GS Fuel Pump Controller 9 years, 2 months ago #473

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New controller arrived today, so now good as new. Pump connector well was full of water though and still running fine!
A few pics and a little more info here: Water water everywhere
The following user(s) said Thank You: Trevor Pastrami

Re: BMW GS Fuel Pump Controller 9 years, 2 months ago #485

Great write up,
So how did the bike run with the by pass, what if any would be the long term consequences?
THE END OF THE ROAD IS THE START OF THE FUN

Re: BMW GS Fuel Pump Controller 9 years, 2 months ago #488

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Was the one you took out one of the first generation silver ones or the later black one?
Rather be loud than lazy......

Re: BMW GS Fuel Pump Controller 9 years, 2 months ago #490

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Trevor Pastrami wrote:
Great write up,
So how did the bike run with the by pass, what if any would be the long term consequences?

Thanks Trev
Can't say I noticed any difference but, as GB pointed out, there's a risk of damaging the fuel injection system if running at full pressure the whole time . Better safe... I must have done over 1000 miles without issue (fingers crossed!).
The following user(s) said Thank You: Trevor Pastrami

Re: BMW GS Fuel Pump Controller 9 years, 2 months ago #491

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GB wrote:
Was the one you took out one of the first generation silver ones or the later black one?

Silver one out, black one in. New one has additional sealing too.

Re: BMW GS Fuel Pump Controller 9 years, 2 months ago #495

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Mine had the original silver lasted 28000m, the spare I carried was a black, I think the black dissipates heat better, but I really don't know. The 8 runs one as well but there seems less documented failures than the 12 whether this is down to sales volume or the 8 running maybe less pressure, again I don't know.
Rather be loud than lazy......
The following user(s) said Thank You: Trevor Pastrami, Outsider

Re: BMW GS Fuel Pump Controller 9 years, 2 months ago #540

Outsider wrote:
New controller arrived today, so now good as new. Pump connector well was full of water though and still running fine!
A few pics and a little more info here: Water water everywhere



I'd better get on with that assignment...


Fixing the old one is that??

Re: BMW GS Fuel Pump Controller 9 years, 2 months ago #547

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East Coast wrote:
Fixing the old one is that??

No, unfortunately. For the last 4 years I've been doing part-time studies and I have assignments to do
The following user(s) said Thank You: East Coast
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