FUEL PUMP RELAY POSSIBLE FIX

parkys100

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This problem seems to be happening on a very regular basis,as I became aware of the problem approx 1 year ago , am I correct in thinking this is due to corrosion? .A possible fix is that I filled the pump controller bowl and relay apature with melted warm finnigans wax oil.And after 1 year, on heating the wax with heat gun I removed the relay in a near immaculate condition, so reheated the wax installed the original relay topped the relay bowl with new warm wax to the brim, so as water is unable to settle in bowl as it,s already full of rust preventitive wax oil.Hopefully this all makes sense.Will report back next year if this works or is it just cr*p made relays?Rgds :type
 
Trouble is only about 1/3 of riders had had one fail IIRC on a recent poll. So you might be one of the lucky 2/3rds, but I'd guess you'll have improved your chances, like I cover mine in ACF50 and have one in the boot :(
 
There is also a theory, posted on here by some clever bods, that the problem is not caused by corrosion, but is caused by overheating. The never version has a different heat sink.


If that is really correct, then filling the lot with wax will indeed prevent corrosion, but will also increase the risk of overheating :nenau

Might be a clever idea or might be doomed to failure :thumb
:D
 
GrinningGSer said:
If that is really correct, then filling the lot with wax will indeed prevent corrosion, but will also increase the risk of overheating :nenau
Click to expand...

I would have though that the wax would help to dissipate any heat. First off heat would be absorbed by the wax, resulting in it becoming more liquid, the heat would then be spread to a larger volume by convection and a larger surface area presented for dissipation to the surrounding air :nenau

Sounds like a cunning plan :thumb2
 
CityBum said:
I would have though that the wax would help to dissipate any heat. First off heat would be absorbed by the wax, resulting in it becoming more liquid, the heat would then be spread to a larger volume by convection and a larger surface area presented for dissipation to the surrounding air :nenau

Sounds like a cunning plan :thumb2
Click to expand...

why not fill it with water,
water has 27x more heat dissipation:hapybnce:lol
 
GrinningGSer said:
There is also a theory, posted on here by some clever bods, that the problem is not caused by corrosion, but is caused by overheating. The never version has a different heat sink.


How can you tell the dirrerence between an old and newer controller, I have bought a spare recently and presumed its a new one.
Jim
Click to expand...
 
Fins go in a different direction... got to go ... Heroes is on... back later and I'll find a pic :D
 
This was the 'new controller' in 2007 and is the spare that I carry.
146289389-L.jpg

Things may have changed again. The pre 2007 controller had cooling fins that ran in a different direction:
http://www.ukgser.com/forums/showthread.php?t=104361&highlight=spare+controller&page=2
 
GrinningGSer said:
This was the 'new controller' in 2007 and is the spare that I carry.
146289389-L.jpg

Things may have changed again. The pre 2007 controller had cooling fins that ran in a different direction:
http://www.ukgser.com/forums/showthread.php?t=104361&highlight=spare+controller&page=2
Click to expand...


OK so thats a pic of the new one.
The old one has the cooling fins parallel to the black socket.

Does anyone know if there have been failures on the new type? IE have they fixed the issue or just re-designed for the hell of it?
 
Had it happen on my june '05 bike. Sold it after 40000miles/60000km.
Bought new R12GS december '07. Same problem occurred 2 weeks ago at 6000miles/9000km.
So, no improvement there.:(
 
Nippy Normans supply Touratech, Wunderlich, Desert Fox and many other makes of accessories.
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