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#1000668 - 11/11/17 12:06 AM 98 R1100RT won't run.  
Joined: Jun 2007
Posts: 128
Reecehk Offline
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Reecehk  Offline
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Joined: Jun 2007
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South Australia
Hi, having a bad run atm, on Thursday a truck threw a rock up and cracked the windscreen on the car so I have to organize getting that fixed.
Friday our refrigerator died and had to get a new one delivered, that cost a bit!!!
Now Saturday the wife and I thought we'd get away from it all for the day and take a small trip, didn't get far and the bike just died, had to push it back home, cripes that pooped us out some!!! tongue
What happened was the choke was still on and the bike was in first gear slowly up a dirt road toward the main bitumen road. Suddenly it just died and the bike jumped out of first gear into neutral. Cranking over doesn't start it unless I turn the ignition off then on, then it runs for a second or so and dies again. This repeats, only after the ignition is turned off then on will it even kick over. After doing this a few times the bike cranks over but not even a kick now.
Not sure what to do now, at a guess I'd say the fuel pump or some kind of blockage, I did just clean the bike the day before so maybe water got in somewhere. Anyone have any ideas? confused

#1000669 - 11/11/17 12:17 AM Re: 98 R1100RT won't run. [Re: Reecehk]  
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SKYGZR Offline
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SKYGZR  Offline
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Posts: 614
Planet Earth, Orion Spur, Milk...
do a search for "HES" or Hall Effect Sensor


As of SEPT-2017,
'85K100RS,OrigOwner,DOWN@*200,620*mi
'96R1100RS,3rd Owner,76,570mi.
'03K1200GT, 4th Owner,52,990mi.
'02Hayabusa,3rd Owner,28,655mi.
'07 650 V-STROM, 2nd Owner, 32,255mi.
#1000679 - 11/11/17 02:24 AM Re: 98 R1100RT won't run. [Re: Reecehk]  
Joined: Jun 2007
Posts: 128
Reecehk Offline
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Reecehk  Offline
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Joined: Jun 2007
Posts: 128
South Australia
I just went out to check things out, couldn't see anything so before pulling it all apart thought I'd try starting it again, I turned the key on and the whir noise sounded as usual and there is like a relay click that follows normally but this started clicking erratically, not sure if the headlight was going on and off as well and not really sure what was happening to the instruments. When I was on the road I had my helmet on so may not have noticed the erratic clicking. When this settles down it still won't start. I checked the side stand switch and kill switch but they seem ok.
I may have to pull all the tupperware off and check other connectors etc.

#1000680 - 11/11/17 03:11 AM Re: 98 R1100RT won't run. [Re: Reecehk]  
Joined: Jun 2007
Posts: 128
Reecehk Offline
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Reecehk  Offline
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Joined: Jun 2007
Posts: 128
South Australia
I tried again to record what happens when the ignition is turned on, the whir goes but there is no ignition click only the ABS indicator clicking. If I had to guess I'd say the ignition relay is not coming on. Is there an ignition relay? Should there be a click after the whir? (I assume the whir is the fuel pump, maybe not.

Edit: I checked the Motronic relay and it is ok, I checked and there is power to the relay when ignition is on, so it looks like I will have to take the cover off the alternator belt and check the HES, I was kinda hoping it would be the relay!!! smirk

Last edited by Reecehk; 11/11/17 04:44 AM.
#1000688 - 11/11/17 05:28 AM Re: 98 R1100RT won't run. [Re: Reecehk]  
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Posts: 128
Reecehk Offline
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Reecehk  Offline
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Joined: Jun 2007
Posts: 128
South Australia
I think I remember when the ignition was clicking eratically (relay I think) the tacho was jumping around!!

#1000689 - 11/11/17 10:41 AM Re: 98 R1100RT won't run. [Re: Reecehk]  
Joined: Dec 2000
Posts: 2,836
Jim Moore Online
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Jim Moore  Online
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Joined: Dec 2000
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Jax, FL
"Tacho jumping around" is a pretty good indication of a HES problem. Especially on a nineteen year old bike.


Jim Moore Jax, FL '99 R1100S '02 R1150GS
#1000696 - 11/11/17 12:41 PM Re: 98 R1100RT won't run. [Re: Reecehk]  
Joined: Jun 2007
Posts: 128
Reecehk Offline
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Reecehk  Offline
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Joined: Jun 2007
Posts: 128
South Australia
I have all service records, the bike has only done 54,000 miles even though it is nearly 20 years old, but heat stress over 19 years would still be pretty bad. It is starting to look like the HES, the only thing that confuses me is the erratic clicking of a relay making the tacho jump around, that has stopped now, hopefully it hasn't damaged the Motronic unit, I dread to think what that would cost to replace!! frown

#1000711 - 11/11/17 04:34 PM Re: 98 R1100RT won't run. [Re: Reecehk]  
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Roger C Offline
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Roger C  Offline
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Kernersville, NC
A couple simple tests you can do. Try removing one of your spark plugs, attach the wire, ground the plug against the cylinder head and try to crank. Look for spark. Replace plug and remove a fuel injector. Position it so you can see if there is any fuel being delivered when cranking. If both these tests fail, the HES is probably bad. It is a pain to remove, but there are plenty of videos out there.

Used motronics are available on ebay for much, much less than the $2700-2800 new price from BMW. If you have some jumper wires, disconnect the HES plug and run jumper wires to each terminal. Hook a volt meter set to 12V DC to the power and ground terminals and crank. If no reading on the volt meter, the motronic is fried. Once it is removed, you can smell if it is burned. It is a hideous odor.


'96 R1100RT, '95 K75, '14 CB1100, '08 Goldwing
Kernersville, NC
#1000730 - 11/12/17 12:57 AM Re: 98 R1100RT won't run. [Re: Reecehk]  
Joined: Jun 2007
Posts: 128
Reecehk Offline
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Reecehk  Offline
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Joined: Jun 2007
Posts: 128
South Australia
Thanks, I will begin working on it!!

#1000742 - 11/12/17 06:03 AM Re: 98 R1100RT won't run. [Re: Reecehk]  
Joined: Jun 2007
Posts: 128
Reecehk Offline
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Reecehk  Offline
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Joined: Jun 2007
Posts: 128
South Australia
I just went to test the spark and turning the ignition on started the erratic clicking noise and the spark plug was firing without the motor being cranked and tacho jumping around, I haven't tried testing the fuel injector but I don't think I need to, plus this erratic behavior may damage the Motronic unit. I shall proceed to check the HES unit. Must be a bad join or something.
Any other advice certainly welcome. smile

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