Electrical gremlins on melted ’08 1200GSA

[Anonymous]

#4475

Hi GuysI'm looking for some technical help. I'm sick of posting help questions on open web forums as they inevitably end up with a thread hijack. Anyways... I bought the bike damaged, 9600km, was left idling until electrical equipment melted and failed, tank melted. BMW Lower Hutt have helped enormously and have supplied parts as needed. Bike is now running after replacing BMSK, crank sensor, ignition coil, battery, oil sight glass, I have serviced the bike. Mechanic's comment is the engine sounds fine and anyway they are strong as hell.The wire loom has 3 areas of melting that we have separated the melting and insulated with tape. I've brought a wire loom from an inmate in Canada, but post appear to have lost it. GrrrrrrI'm an engineer, I have a GS911, and service my own bikes.Ok the faults....Cam chain(s) are flapping and making a lot of noise. I've disassembled the hydraulic tensioner and spun them in a lathe to ensure they slide together properly. I'll live with this in the hope that they refill with oil, if not I'll buy new.Bike won't idle and gets super hot super quick. Plugs are now oiled. I've balanced the injectors and throttle bodies but are yet to put in my second hand plugs. Cables are correctly positioned. Any other areas to check?GS911 is showing fault fuse for the O2 sensor. How do I reset this fuse?I can't get the bike to run in gear. GS911 test shows the switches for sidestand and clutch are working. The 911 shows sidestand 1 switch is working, sidestand 2 switch is extended, calculated switch is extended. Where are these switches? I've tried bypassing the side stand switch, I've had the bike running and with a push and stuff it into gear but it dies straight away. Gear position sensor is working fine.  What do I do next?Thanks in advance,  Ralph Rackstraw

[Anonymous]

#18226

any signs of serious disassembly? running with no power CAN BE a function of both electrical/spark and cam timings. a really coarse assessment of compression relative to piston position (pull a spark plug. either thumb or screwdriver in the hole!) MIGHT give some insight into cam timing positions. spark timing CAN cause running with no power and overheating. Are timing marks/flywheel readily accessible on your BMW?supposition and telegraphic diagnostics are to be taken with all due care. :-

[Anonymous]

#18227

Thanks.The mechanic spent a few days trying to get it running then gave him the expected bill to repair as new. The engine is untouched (in fact the whole bike) before being abandoned for 4.5yrs by the PO. Cam timing appears to be ok - when the engine was at TDC both cam arrows appeared to be horizontal (pointing back to the engine) correct position. I have a compression tester here, somewhere, so i'll try to get a test done.Ralph

[Anonymous]

#18228

Sorry I can't help (I didna touch it either!) but otherwise, I'd also suggest posting in GS Boxers over on advrider.com (provided Brucie doesn't slap me for posting other forums).Lot of experienced guys over there, work on their own bikes, good knowledge. Problem with melting, you don't know how far it's gone until you find yourself replacing everything...

[Anonymous]

#18229

(provided Brucie doesn't slap me for posting other forums).

Am I that unreasonable?

[Anonymous]

#18230

(provided Brucie doesn't slap me for posting other forums).

Am I that unreasonable?

Your quoted yourself within myself?  😮Wasn't sure... but I feel unslapped, so all good  ;D

[Anonymous]

#18231

I'd also suggest posting in GS Boxers over on advrider.com .

Posted there ..... i get a little help then inevitably the thread gets hijacked and ends up as a bitch fight between others over nothing, i get sick of it, so I'm inclined to stay away with technical questions now.

[Anonymous]

#18232

Hey there, Im guessing you have probably already done this since you have a GS 911, but have you gone and tested the throttle body stepper motors?, these have a effect on idle control and mixture/cold start conditions. I think from memory there is a function somewhere on the GS 911 software to both test and synchronise the stepper motors in the throttle bodies, you should be able to hear a feel each electric motor on the body being tested as it goes through a few cycles.

[Anonymous]

#18233

Hi Guys just an update on what went wrong and how i fixed it.The over heating melted the wire loom in a few places.The shorting out of the loom fried PARTS of the BMSK (the was one funky black area on the circuit board).Some of the wire loom was repaired. Major failure on my part to not get a new loom!.A replacement BMSK was ordered and fitted.The still damaged wire loom fried parts of this new BMSK. FFS. However many many items on the bike worked just fine, so while chasing what i thought were remaining faults i replaced many parts i needn't have.New wire loom fitted and another BMSK fitted. Broooooooom, brooooooom. Runs well. Software update and the bike is fine.And really the bike is fine. I did a full service, a hell of a lot of loving to the bike mechanically, and a few oil changes that kept coming out clear. It ran very smooth and powerful. Happy camper.In the mean time my mate brought around his '12 GSA1200 and asked if i want to buy it. Newer bike, must resist, nothing wrong with the '08. Bugger, bought it...... and sold the '08. Motomart are a great team out front and especially in the workshop. I can't say enough good things about them.Ralph

[Anonymous]

#18234

Motomart are a great team out front and especially in the workshop. I can't say enough good things about them.Ralph

Feel free to say that here, Ralph: http://bmwor.org.nz/forum/index.php?board=27.0Motomart also support BMWOR very well through their advertising and encouraging BMW buyers to become members.

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