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   '85 K100 HES Empty '85 K100 HES on Thu Jan 18, 2018 10:04 am

kcdman

kcdman
active member
active member
Howdy folks,
My K100 wants a Hall Effect Sensor (probably)
I believe this is the itch that keeps my brick from running.
Not pleased with the $400+ Ebay new price
Less so with the $600 OEM price.

Saw one get away from me at a $40 price.  '85 K100 HES 177381

Any goodness out there?

Thanks


__________________________________________________
'85 k100c
    

2Back to top Go down   '85 K100 HES Empty Re: '85 K100 HES on Thu Jan 18, 2018 10:15 am

92KK 84WW Olaf

92KK 84WW Olaf
Life time member
Life time member
I am not sure where the thread is but there is one here somewhere about changing the sensors themselves for small money. Apart from that there are places like beemerboneyard or motorworks.co.uk or jamessherlock.co.uk to pick up used ones. I don't think any of us would really suggest spending $600 on a new one. Spend a small few $ more and buy a parts bike would be a better option.


Out of curiosity does you K fire up at all?


__________________________________________________
1992 K100LT 0193214 Bertha Alaska Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 58,645 now 98,780 miles
1983 K100RS 0011171 Fricka 29,495 miles Damn K Pox Its a Bat outta Hell No 32,600 miles
    

3Back to top Go down   '85 K100 HES Empty Re: '85 K100 HES on Thu Jan 18, 2018 10:38 am

Laitch

Laitch
Life time member
Life time member
@kcdman wrote:My K100 wants a Hall Effect Sensor (probably) . . .
Why "probably", kcdman? What are the symptoms?


__________________________________________________
1995 K75 73,000 miles
'85 K100 HES Usa-lo10
    

4Back to top Go down   '85 K100 HES Empty Re: '85 K100 HES on Thu Jan 18, 2018 2:17 pm

kcdman

kcdman
active member
active member
Thanks for the interest folks.
The "Probably" comes from the symptoms.
For a while ~1 yr or so, she would run fine (occasional lag at low revs with a decided pick up at 2500 - 3000, but otherwise bullet proof)
then...
motor cut out underway, nap for a bit with a short cycle of  -starter turn for a second, nothing for a second, then starter again for a second, etc.... all while holding the button
after a bit of roadside spectating, she would start right off and run again.
Now she just does the fuel pump-starter on-off shuffle.

I've pulled every relay, cleaned every obvious connector (and start switch), jumper wired the collective ground from the frame to the NEG connection on the trans, pulled and cleaned the starter.

The forums suggest the HES is the culprit so....


__________________________________________________
'85 k100c
    

5Back to top Go down   '85 K100 HES Empty Re: '85 K100 HES on Thu Jan 18, 2018 6:40 pm

robmack

robmack
Life time member
Life time member
Those symptoms sounds like flat battery. For example, there's enough battery terminal voltage to turn on the systems and engage the start relay but, as soon as the starter kicks in, the current draw drops the terminal voltage below the drop-out voltage for the starter relay and the starter dies.


__________________________________________________
Robert
1987 K75 @k75retro.blogspot.ca
http://k75retro.blogspot.ca/
    

6Back to top Go down   '85 K100 HES Empty Re: '85 K100 HES on Thu Jan 18, 2018 7:17 pm

kcdman

kcdman
active member
active member
OK robmack,
I like the thought process.
I have tried this with the charger hooked up and "green light".
I can concede that batteries have internal quirks that can look green at first blush and still fail a guy.
I can try a swap and another attempt.

I'll get back to ya.

Thanks


__________________________________________________
'85 k100c
    

7Back to top Go down   '85 K100 HES Empty Re: '85 K100 HES on Thu Jan 18, 2018 7:54 pm

RicK G

RicK G
VIP
VIP
When you are starting the icu gives an earth to the starter relay and the FI relay for 1.5 sec then if the hall sensor is not giving a signal that earth is removed as a safeguard against the fuel pump running all the time the ignition is on whether the engine is running or not. So I put my money or what there is of it on it being a hall sensor, probably the 2-3 sensor. 
The sensors are available by themselves http://hiem.com/hall-effect-switches/vane-sensor-bbhme56/  these are not cheap and there are places which are much cheaper so have a hunt around the forum and you will find quite a few places that members have bought them for around $10.


__________________________________________________
"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats."  from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

8Back to top Go down   '85 K100 HES Empty Re: '85 K100 HES on Fri Jan 19, 2018 7:40 am

92KK 84WW Olaf

92KK 84WW Olaf
Life time member
Life time member
This can also happen with a dodgy plug to FICU [unit under the seat] connection. Have had it on 2 different Ks, clean up the pins and sorted. I have a feeling the technical explanation is one of the pin connection was breaking contact and the bike would cut out. I cleaned up the plug and pins and swapped the FICU unit with another bike thinking the unit might be the problem. All was good. About a month later swapped the FICU unit back in and all was still good.

On a K75 the same issue, the plug wasn't seating properly in the FICU.


__________________________________________________
1992 K100LT 0193214 Bertha Alaska Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 58,645 now 98,780 miles
1983 K100RS 0011171 Fricka 29,495 miles Damn K Pox Its a Bat outta Hell No 32,600 miles
    

9Back to top Go down   '85 K100 HES Empty Thanks folks on Sat Feb 03, 2018 8:46 pm

kcdman

kcdman
active member
active member
Got an E-bay HES for $75 and the girl runs again.Rick, your assessment of the timing of things sold me on the HES and the price was a reasonable experiment. cheers


__________________________________________________
'85 k100c
    

10Back to top Go down   '85 K100 HES Empty Re: '85 K100 HES on Sun Feb 04, 2018 9:04 pm

Dai

Dai
Life time member
Life time member
For anyone else hunting round the forum looking for the link that Rick is referring to:

http://www.hallsensors.de/Hall-Vane.htm

I knew saving huge numbers of bike-related bookmarks would come in useful one day!


__________________________________________________
'83 K100 upgraded to K100RS spec
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California,
'03 Suzuki Blandit GSF600SK3 (NFS any more because wifey has claimed it)
    

11Back to top Go down   '85 K100 HES Empty Thanks everyone on Mon Feb 12, 2018 11:52 pm

kcdman

kcdman
active member
active member
I replaced the HES and she runs. I want to thank everyone who participated in the dialogue. Now that we're up and at 'em again I've run into other problems but that would be another thread. I have fuel delivery issues now (probably due to the months of sitting idle while deciding what to do) but she runs with throttle input but won't Idle for love nor money.
I'm going to hunt the forum for answers and, failing any satisfaction, will post another question to the collective wisdom.


__________________________________________________
'85 k100c
    

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