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1Back to top Go down   Bosh Electronic Ignition unit Empty Bosh Electronic Ignition unit Thu Feb 07, 2013 1:31 pm

88

88
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When Tidying up (I use the term loosely) in the workshop last night I found the old Bosch electronic/Ignition Control unit for my k100.

Bosh Electronic Ignition unit Img_1010

Does anybody know of a repair service for these or are they useless once they have failed?

It would be good to have it repaired if possible and keep it for a spare.

88


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Bosh Electronic Ignition unit Ir-log11 88....May contain nuts!Bosh Electronic Ignition unit Ir-log11

"The world is a book and those who do not travel read only one page." - St. Augustine from 1600 years ago & still true!

K1100LT 1992 - AKA Big Red
K1100RS - 1995. AKA Rudolf Von Schmurf (in a million bits)
K1/RS - AKA Titan (unique hybrid by Andreas Esterhammer)
    

2Back to top Go down   Bosh Electronic Ignition unit Empty Re: Bosh Electronic Ignition unit Thu Feb 07, 2013 1:40 pm

charlie99

charlie99
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dont know who does them 88

i still havent looked inside one yet

perhaps someone has an idea ? good luck mate


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

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%OBosh Electronic Ignition unit 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 ..
    

3Back to top Go down   Bosh Electronic Ignition unit Empty Re: Bosh Electronic Ignition unit Thu Feb 07, 2013 5:15 pm

Crazy Frog

Crazy Frog
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They usually don't break unless they are the first generation (1984-1985).
They have been replaced under warranty (recall valid for 10 years) because they were not waterproof.
It would be cheaper to find a used one online than paying somebody to fix it.


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Bosh Electronic Ignition unit Frog15Bosh Electronic Ignition unit Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

4Back to top Go down   Bosh Electronic Ignition unit Empty Re: Bosh Electronic Ignition unit Thu Feb 07, 2013 6:21 pm

Themason

Themason
Platinum member
Platinum member
I've never heard of one failing. What does cause problems is the insulating wrap around the harness connecting the ignition module to the Hall Effect Sensor (HES for brevity). There is a conductive mesh in the insulation surrounding the wires that if disturbed can allow RFI to cause problems with the signal from the HES. It is especialy common at the locations where the harness is zip tied to the right frame down tube (zip tied too tight) and where the wires enter the harness at the ignition module, where it makes a 180 degree bend.

I would test it in your bike before tossing it out. They are not cheap, even used.


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I live in a parallel universe but have a vacation home in reality :arrow:

1984 K-100RS Alaska Blue w/Parelever and 16V wheels.

1984 K-100RS Metallic Madison stock

1986 R-80G/S w/1000 cc engine

2007 Harley Davidson Street Rod Mirage Orange w/XR1200 wheels, Race Tech, True Track, Works Performance shocks

2007 Harley Davidson Street Rod Vivid Black stock

1993-ish K-100/1100RT/LT hemaphrodite frankenbike thingy to be painted satin black from a rattle can eventually
    

5Back to top Go down   Bosh Electronic Ignition unit Empty Re: Bosh Electronic Ignition unit Thu Feb 07, 2013 6:32 pm

Hover K100

Hover K100
Silver member
Silver member
I have a spare and a couple of damaged ones, one got wet with some interesting results, the water lodged in the bottom and if you turned the unit sideways it worked!! and another got "spiked" by voltage from the charging circuit of my Briggs engine. I know one that we suspect was damaged by not using a diode protected relay for the injection pump. We have come across damaged shield cable too, as said cable tie damage.
Keep an eye on fleabay and dont pay too much for one, they are not worth much, there seems to be a few about.

https://www.youtube.com/user/HoverIreland?feature=mhee
    

6Back to top Go down   Bosh Electronic Ignition unit Empty Re: Bosh Electronic Ignition unit Thu Feb 07, 2013 6:43 pm

88

88
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Life time member
@Themason wrote: I would test it in your bike before tossing it out.
.

Interesting comments guys, thanks. I was half expecting that it would be uneconomical to repair as CF suggests.

It was diagnosed faulty by a local mechanic who looked over the bike for me when I got it first, it would start but conk out if any throttle was applied. He told me that after trying lots of things he brought the bike to a wreckers yard and swapped out various components until he got it running. The unit that is now in the bike came from that yard at a cost of €60 which seemed reasonable to me at the time. It could be that all the plugging and unplugging he did cleaned some contacts and solved the problem.

I'll definitely test it before passing sentence!

88


__________________________________________________
Bosh Electronic Ignition unit Ir-log11 88....May contain nuts!Bosh Electronic Ignition unit Ir-log11

"The world is a book and those who do not travel read only one page." - St. Augustine from 1600 years ago & still true!

K1100LT 1992 - AKA Big Red
K1100RS - 1995. AKA Rudolf Von Schmurf (in a million bits)
K1/RS - AKA Titan (unique hybrid by Andreas Esterhammer)
    

7Back to top Go down   Bosh Electronic Ignition unit Empty Re: Bosh Electronic Ignition unit Thu Feb 07, 2013 6:57 pm

Hover K100

Hover K100
Silver member
Silver member
Thats not a symptom of a dud ignition unit, more like stuck airflow meter. When the fail they just stop although I have one thats down on one coil only. 60 is not bad but I have bought several for less that 30.

https://www.youtube.com/user/HoverIreland?feature=mhee
    

8Back to top Go down   Bosh Electronic Ignition unit Empty Re: Bosh Electronic Ignition unit Thu Feb 07, 2013 7:04 pm

Crazy Frog

Crazy Frog
admin
admin
[quote="88KE"]
@Themason wrote:The unit that is now in the bike came from that yard at a cost of €60 which seemed reasonable to me at the time.

Price at the dealer is approximately $1,500 Twisted Evil affraid . €60 is a fair price as a used one usually sells for an average of $125 or €100.


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Bosh Electronic Ignition unit Frog15Bosh Electronic Ignition unit Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

9Back to top Go down   Bosh Electronic Ignition unit Empty Re: Bosh Electronic Ignition unit Thu Feb 07, 2013 7:31 pm

tio Jaimito

tio Jaimito
Platinum member
Platinum member
88KE wrote:
@Themason wrote: I would test it in your bike before tossing it out.
.

It was diagnosed faulty by a local mechanic who looked over the bike for me when I got it first, it would start but conk out if any throttle was applied. He told me that after trying lots of things he brought the bike to a wreckers yard and swapped out various components until he got it running. The unit that is now in the bike came from that yard at a cost of €60 which seemed reasonable to me at the time. It could be that all the plugging and unplugging he did cleaned some contacts and solved the problem.

I'll definitely test it before passing sentence!

88
This is the exact problem that Peggy's (me wifey) K75 has. I am fiddling with her (the K75) now. There is hope.
UJ


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Krazy Kat. 1985 K100RS Alaskablau 13000miles 8valve "Black Belly"

Peggy's 1987 K75s Columbia Grey 9500miles 6 valve.

Bosh Electronic Ignition unit K100_m12

Bosh Electronic Ignition unit K75_po12
Bosh Electronic Ignition unit Basil_10
http://www.nachicagonorth.com
    

10Back to top Go down   Bosh Electronic Ignition unit Empty Re: Bosh Electronic Ignition unit Fri Feb 08, 2013 9:21 am

88

88
Life time member
Life time member
@tio Jaimito wrote:This is the exact problem that Peggy's (me wifey) K75 has. I am fiddling with her (the K75) now. There is hope.
UJ

There is indeed! It seems a recurring theme on the Forum that people who suspected this unit to be at fault ultimately found that the cause on there problems lay elsewhere. Work your way through the fault finding/troubleshooting guides carefully before chucking out the electronics.

88


__________________________________________________
Bosh Electronic Ignition unit Ir-log11 88....May contain nuts!Bosh Electronic Ignition unit Ir-log11

"The world is a book and those who do not travel read only one page." - St. Augustine from 1600 years ago & still true!

K1100LT 1992 - AKA Big Red
K1100RS - 1995. AKA Rudolf Von Schmurf (in a million bits)
K1/RS - AKA Titan (unique hybrid by Andreas Esterhammer)
    

11Back to top Go down   Bosh Electronic Ignition unit Empty Re: Bosh Electronic Ignition unit Fri Feb 08, 2013 11:28 am

Themason

Themason
Platinum member
Platinum member
In my own experience the few times I have had the described symptoms, engine starts and then conks as soon as given any throttle has been tied to two things. I have either neglected to fully seat or fully tighten the clamp on the 90 degree tube from the air flow meter to the plenum, or the bike had old fuel and/or Stabil in the fuel. Old fuel can make them a real devil to start.


__________________________________________________
I live in a parallel universe but have a vacation home in reality :arrow:

1984 K-100RS Alaska Blue w/Parelever and 16V wheels.

1984 K-100RS Metallic Madison stock

1986 R-80G/S w/1000 cc engine

2007 Harley Davidson Street Rod Mirage Orange w/XR1200 wheels, Race Tech, True Track, Works Performance shocks

2007 Harley Davidson Street Rod Vivid Black stock

1993-ish K-100/1100RT/LT hemaphrodite frankenbike thingy to be painted satin black from a rattle can eventually
    

12Back to top Go down   Bosh Electronic Ignition unit Empty Re: Bosh Electronic Ignition unit Sat Feb 09, 2013 12:59 am

K75cster

K75cster
Life time member
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by my recconing 88 if you declare it a dud then you can peak inside without fear Wink


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Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt 1992 K1100LT a blue one

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

13Back to top Go down   Bosh Electronic Ignition unit Empty Re: Bosh Electronic Ignition unit Sat Feb 09, 2013 10:51 am

92KK 84WW Olaf

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I also have one of these units. I had trouble in early 2012 and it was solved when I replace dthis unit. The pointers were to other things but in the end I suspect it may have bene some oft he connections as 88KE says. It was as new inside with no sign of any water entry. O didnt even bother testing it.


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1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 40,490 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 42,640 miles.

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

14Back to top Go down   Bosh Electronic Ignition unit Empty Re: Bosh Electronic Ignition unit Sun Feb 10, 2013 5:33 am

RicK G

RicK G
admin
admin
There is a guy in Sydney that can fix them and my advice is don't throw them out even if they are cactus.
They may be easy to get now but in another 10 years there may well be a lot of people regreting the big heave ho they gave one.
They dont make them anymore.
How often do we hear things like gee my mate had heaps of them and threw them out (whatever them is).
These Ks are going to be around for a long time and bits will become very difficult to get we should make sure we don't contribute to the items becomming scarse.



Last edited by Rick G on Sun Feb 10, 2013 8:22 pm; edited 1 time in total (Reason for editing : senior moment)


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"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 2004 K1200GT 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

15Back to top Go down   Bosh Electronic Ignition unit Empty Re: Bosh Electronic Ignition unit Sun Feb 10, 2013 5:05 pm

Hover K100

Hover K100
Silver member
Silver member
If any of you are every down my way I can check them in seconds by plugging them into the craft's loom. I'm not sure how hard it is to swap over in the bike but my "new" wiring box is designed to allow for quick diagnosis of wiring problems.

https://www.youtube.com/user/HoverIreland?feature=mhee
    

16Back to top Go down   Bosh Electronic Ignition unit Empty Re: Bosh Electronic Ignition unit Sun Feb 10, 2013 8:41 pm

Halo

Halo
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Send it to me and I will have a look it is right up my alley, only problem is I'm in Aus
Halo


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84 K100RS 0014803
93 FZR1000 EXUP
    

17Back to top Go down   Bosh Electronic Ignition unit Empty Re: Bosh Electronic Ignition unit Sat Feb 16, 2013 3:30 pm

K-BIKE

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You guys are magnificent, helping hands being extended to other forum members - Good on ya.
Regards,
K-BIKE

    

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