BMW K bikes (Bricks)

You are not connected. Please login or register

View previous topic View next topic Go down  Message [Page 1 of 1]


1Back to top Go down   Won't start & now it won't stop Empty Won't start & now it won't stop Wed Feb 09, 2011 4:49 am

Ramadge

avatar
active member
active member
Hi guys

I am having a problem on my 89 K75s. Bad starting etc. Eventually traced it down to a bad connection from the battery positive terminal (good at the terminal, but bad about 2 inches down which was covered with insulation tape). Fixed that, but it created another problem. Started first time, but the starter motor doesn't turn off (even with the key out and the kill switch in off position). Indicators and horn don't work either. Checked the Starter Relay since I have heard this is often the problem if it sticks. Relay is fine, can see it going on and off when i hit the starter button. But problem persists. Any ideas? I thought perhaps the starter motor itself, or the load sharing relay (but these are just the first 2 that come to mind). It's been quite a while since I did fault diagnosis on a BM (back in the 70s when the electronics weren't as sophisticated as they are on a late 1980s bike.




Ramadge
New member

    

2Back to top Go down   Won't start & now it won't stop Empty Re: Won't start & now it won't stop Wed Feb 09, 2011 5:40 am

Crazy Frog

Crazy Frog
admin
admin
Can you remove your relay and clean the contacts?
As K-bike said on your other post, the relay is the only path between the battery and the starter. If the contacts are open, the starter cannot turn. When the starter is spinning, lights, horns and flashers are disabled (the load shed relay is deactivated).


__________________________________________________
Won't start & now it won't stop Frog15Won't start & now it won't stop Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

3Back to top Go down   Won't start & now it won't stop Empty Stranger and stranger (to me anyway) Thu Feb 10, 2011 5:06 am

Ramadge

avatar
active member
active member
I have removed the relay and cleaned up the contacts. they seemed pretty good to me, but now they are gooder (attampt at joke here), no pits or anything like that.

I put a volt meter across the battery. It drops from 12.5v to 11.4v under load. I put the volt meter on the relay contacts. 0 voltage. Under load (starter motor running) it gets up to under a volt (0.6 or thereabouts) with the starter running. I would have thought that if the starter relay was the problem I would see 11.5 to 12.5 volts going through it???? 🇳🇴

    

4Back to top Go down   Won't start & now it won't stop Empty Re: Won't start & now it won't stop Thu Feb 10, 2011 8:55 am

Ajays

Ajays
Life time member
Life time member
Won't Go...Pull your starter motor and replace the brushes...wierd things happen when the brushes are worn...
Ajays



Last edited by Ajays on Thu Feb 17, 2011 7:47 am; edited 2 times in total

    

5Back to top Go down   Won't start & now it won't stop Empty New relay Wed Feb 16, 2011 6:15 am

Ramadge

avatar
active member
active member
New relay. Same problem

    

6Back to top Go down   Won't start & now it won't stop Empty Re: Won't start & now it won't stop Wed Feb 16, 2011 10:06 am

charlie99

charlie99
VIP
VIP
good luck ram ...sounds like some weird stuff going on ......i would be rechecking all the positive power feed cables and making sure that there is no insulation breakdown withing the "electrics box" ie copper touching copper somewhere ...
your original problem of bad cable and fix up may be a clue to damaged cables sometime in the past that has come back to haunt you .

whilst you have the tank off ..have a good look around for accessory cables that may have been added or spliced in at some stage .
hope this helps some


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%OWon't start & now it won't stop Au-log10

'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
    

7Back to top Go down   Won't start & now it won't stop Empty Re: Won't start & now it won't stop Thu Feb 17, 2011 7:05 am

Adiwan Djohanli

Adiwan Djohanli
Silver member
Silver member
This is very strange. Have you tried to pull the fuse one by one from 1 - 7 to see if the starter motor will stop?

You may want to check the wiring connection and trace the connection / relay / kill switch. There may be a "modified connection / wiring".

Regards.


__________________________________________________
Adiwan Djohanli
Jakarta-Indonesia[i]
    

8Back to top Go down   Won't start & now it won't stop Empty Re: Won't start & now it won't stop Thu Feb 17, 2011 7:48 am

Ajays

Ajays
Life time member
Life time member
renew your brushes mate.


__________________________________________________
Won't start & now it won't stop Th_Kengine_gif

AJAYS
    

9Back to top Go down   Won't start & now it won't stop Empty Re: Won't start & now it won't stop Sun Feb 20, 2011 3:07 am

Ramadge

avatar
active member
active member
thanks guys. A systematic track down of gremlins will now begin. I still think it may be haunted though. Perhaps the ghost of K75s realises that it just missed out on the ABS option by a year or two.

    

View previous topic View next topic Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum