Engine stops when encountering a bump at slow speeds


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Lynnmarn
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Engine stops when encountering a bump at slow speeds

Postby Lynnmarn » Wed Nov 13, 2013 1:32 pm



I have a 1984 GL1200 Interstate with 15,000 miles. Sometimes when I come into my driveway the engine stops. It will start up again immediately. I am in first gear and going slow because right after the rolling curb my driveway angles up pretty steep so don't want to tip over. The first time I didn't pay any attention but it has done it several times and last night it did it again when coming home from a ride with my adult daughter on the back. I have owned it 3 months and have replaced spark plugs, flushed the cooling system, replaced the stator wiring with Electrical Connections wire harness, replaced fork seals and front and rear brake pads. Does anyone know it could be.



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Re: Engine stops when encountering a bump at slow speeds

Postby virgilmobile » Wed Nov 13, 2013 3:14 pm

assuming your just not stalling the engine,look at 2 things.
Replace the dogbone fuse and clean the 4 wire connector to the left of the battery.
At a low rpm the charging system won't quite run the bike and it relies on power from the battery.A comprimised/crumbling/fractured fuse can kill the engine when jarred.Same for rhe pulse coil plug(4 wires).

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Re: Engine stops when encountering a bump at slow speeds

Postby dingdong » Thu Nov 14, 2013 8:00 am

You may have a failing bank angle sensor.
Tom

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Re: Engine stops when encountering a bump at slow speeds

Postby Lynnmarn » Thu Nov 14, 2013 11:12 am

I have replaced the stator wiring with the Electrical Connection harness.

Does this model have a bank angle sensor. (84 GL1200 Interstate). Couldn't find reference to one in my manual. Where is it located.

When I started it up this morning it ran really rough like it was only hitting on two cylinders. So I rode my other ride to work (2008 RSTD). I remember Monday when I installed the EC wiring harness one of the coil wires was not connected and it ran the same way until I connected it. I was thinking maybe it had come lose or some how the wire has been severed. I run the wire under the frame and over top of the coils. I will check that out tonight since getting it running is the first order of business.

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Re: Engine stops when encountering a bump at slow speeds

Postby Fatwing Chris » Thu Nov 14, 2013 12:12 pm

Are the coil connectors part of the new harness?If they're not then I would say that the spade connectors at the coils have lost their tension(ability to grip and make a good connection).My 85 Aspy used to drop a couple of cylinders after going over bumps and that's what it ended up being.Relacing them would be the best bet,but you could just try cleaning them up and squeezing them a bit to fit tighter.
If I'da known it would last this long,I'da taken better care of it.
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Re: Engine stops when encountering a bump at slow speeds

Postby Lynnmarn » Thu Nov 14, 2013 5:41 pm

I think you are right on. It sounds exactly like Monday when I started it up and one of the coils was not connected. The EC wiring harness hooks directly to both coils. I bet one of then is loose or came off. I will check it tonight. :D

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Re: Engine stops when encountering a bump at slow speeds

Postby Lynnmarn » Thu Nov 14, 2013 7:19 pm

Just checked the EC wires to the coils and they were great. Then a thought hit me. Check the fuel petcock. Sure enough I had started turning it off a couple of days ago when I read that leaking fuel into the carbs can cause problems. Boy am I embarrassed. Runs great now.

That still doesn't expain why it shuts off on occasion when I am going slow into my driveway. Something that might be related is sometimes when I turn the handlebars hard to the right it will shut off. It did it just this evening. It starts right back up but won't repeat it. When I back out of my garage in the mornings, it is necessary to turn them all the way to the right. Sometimes it just shuts off but it will start right up again, but it doesn't do it every time.

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Re: Engine stops when encountering a bump at slow speeds

Postby virgilmobile » Fri Nov 15, 2013 10:31 am

Turning the handlebars to the right sometimes kills the engine....Whew...combined with intermittent dying at a bump.....We might be narrowing it down a bit...

There was mention from dingdong about a bank angle sensor....As far as I can determine,the bike should have one...Maybe...can't verify...conflicting information...etc..
HOWEVER....If it does,its located up front...
As I remember,the lowers have to come off and you can see it from the right side..It's in the upper framework front of the coils about center of the bike...The other part there is the fuel pump relay...

I can't find it on a schematic but if it's there..it can be bypassed for testing...The device should have 3 wires...One 12 volt switched,one 12 volt output and a ground...A test light would ID them quick.
Bypassing is simply unplugging the BAS,connect the switched 12 volt wire to the 12 volt output wire...Leave the ground loose.....

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Re: Engine stops when encountering a bump at slow speeds

Postby Lynnmarn » Sat Nov 16, 2013 12:16 am

I am going to to replace the dog bone fuses Tomorrow then go from there. All that I have read indicates it doesn't have a bank angle sensor. But who knows. Thanks to all of you who made suggestions. I will keep you updated.

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Re: Engine stops when encountering a bump at slow speeds

Postby LloydB » Sat Nov 16, 2013 12:33 am

At one time there was a recall on bank angle sensors, I can't remember which model it was. But I do remember that it involved the wing that I was riding, and it shut off the engine as I was making a left turn once, causing me to drop the bike in the middle of the intersection, not good. The recall involved the dampening oil leaking, allowing the pendulum to move too easily and shutting off the engine on bumps and slow curves. I can't remember where it is located, but changing it should not be too expensive, and it may solve your problem.
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Re: Engine stops when encountering a bump at slow speeds

Postby Fatwing Chris » Sat Nov 16, 2013 9:08 am

LloydB wrote:At one time there was a recall on bank angle sensors, I can't remember which model it was. But I do remember that it involved the wing that I was riding, and it shut off the engine as I was making a left turn once, causing me to drop the bike in the middle of the intersection, not good. The recall involved the dampening oil leaking, allowing the pendulum to move too easily and shutting off the engine on bumps and slow curves. I can't remember where it is located, but changing it should not be too expensive, and it may solve your problem.


Almost positive that the BAS Recall was on the early 1500's.
If I'da known it would last this long,I'da taken better care of it.
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Re: Engine stops when encountering a bump at slow speeds

Postby Lynnmarn » Sun Nov 17, 2013 9:17 am

All indications are that the 84 GL1200 interstate doesn't have a BAS. I changed the dog bone fuse out yesterday (dog bone fuse had me a little confused. It is the bus fuse under the seat right). I will pick up a a main fuse and install it Tuesday.

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Re: Engine stops when encountering a bump at slow speeds

Postby Lynnmarn » Mon Nov 18, 2013 12:44 pm

I replaced the "dog bone" fuse under the seat and just to the left of the tank (It is in the white capsule in the attached pictures). It was a 10amp buss fuse. Can anyone tell me What this controls?

Fuse is in White Capsule
Fuse is in White Capsule

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Re: Engine stops when encountering a bump at slow speeds

Postby virgilmobile » Mon Nov 18, 2013 12:58 pm

not off the top of my head but thats not the dogbone fuse.
it hides behind a trap door on the front of the start solenoid.It is a fues link thats rated for 30 amp.
unplug the 4 wire plug on the solenoid to get the door open.

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Re: Engine stops when encountering a bump at slow speeds

Postby Lynnmarn » Mon Nov 18, 2013 1:33 pm

Is it this one behind the battery. Is this also the main fuse. If so I am going to pick one up today and install it. So what is the one under the seat next to the tank.
Main Fuse Cover
Main Fuse Cover

Dog Bone Fuse Under Cover
Dog Bone Fuse Under Cover

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Re: Engine stops when encountering a bump at slow speeds

Postby WingAdmin » Mon Nov 18, 2013 1:46 pm

Lynnmarn wrote:Is it this one behind the battery. Is this also the main fuse. If so I am going to pick one up today and install it. So what is the one under the seat next to the tank.
photo(7).JPG

photo(8).JPG


That's it. Replace it with a 30 amp blade fuse and holder, and you won't have a problem with it ever again. See: viewtopic.php?f=4&t=1350&p=4396#p4396

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Re: Engine stops when encountering a bump at slow speeds

Postby Lynnmarn » Mon Nov 18, 2013 2:46 pm

Thanks. Do I connect the wires to the screws where the dog bone fuse connects or do I remove the plastic parts. I am not sure what to expect.

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Re: Engine stops when encountering a bump at slow speeds

Postby virgilmobile » Mon Nov 18, 2013 3:38 pm

that will depend on the condition of the screws.If all are bright and shiny,the plug and pins are spotless,just mouse hole out the side of the door and ring connect the new fuseholder.I prefer soldering the rings if possible.
I have had to go as far as cutting the wires loose and soldering the fuse holder then connecting it to the battery lug.Lots of corrosion bypassed.
Did you positivly confirm your bike does not have the kill sensor(BAS) .?

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Re: Engine stops when encountering a bump at slow speeds

Postby virgilmobile » Mon Nov 18, 2013 3:42 pm

Oh,by the way,don't go cheap.get the large fuseholder with the large auto fuse not the mini one.
The mini's have a tendancy to go bad.Not very much contact on the fuse blades.

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Re: Engine stops when encountering a bump at slow speeds

Postby Lynnmarn » Mon Nov 18, 2013 5:12 pm

Good advice. I looked at the one I was going to get at radio shack and it is a mini blade inline fuse holder. Where do I find an auto one. Don't see them at autozone.
Here are some discussions I looked up on the BAS.
http://www.goldwingfacts.com/forums/2-g ... ensor.html
http://www.goldwingfacts.com/forums/2-g ... moval.html
http://www.goldwingfacts.com/forums/2-g ... l1200.html

The sensor on the GL1200I is for the turn signals. That is also the only sensor that is listed in my pdf service manual.

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Re: Engine stops when encountering a bump at slow speeds

Postby virgilmobile » Mon Nov 18, 2013 5:28 pm

Here's a AFTER picture of a mini fuseholder with crimp connectors..

I have a local electrical supplier that I got mine from...I always solder..
Check Napa,and every one else...If you cant't find one,let me know....The large one is just my preference....you know,bigger is better. :D

Ok about the sensor....and were still guessing why a bump kills the bike...Got to be electrical tho.

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Re: Engine stops when encountering a bump at slow speeds

Postby Lynnmarn » Mon Nov 18, 2013 5:43 pm

I will change the fuse out this week. I was told I could find one at the trailer supply where I have to go this evening so I will pick one up. I will solder the fuse to the connectors then connect them to the dog bone screws.

I think I won't worry about the engine shutting off when going over a bump to see if I can recreate it. Now that it is up and running and I can drive it most everyday maybe it will happen again.

This morning when backing out of the garage I turned the handle bars a bit to the right and it shut right off. It started up immediately but wouldn't do it again.

It was 34 degrees when I left for work and about a mile from home I this noise like a fan blade that is squeaking on a computer when the bearing are going out. Or a car air conditioning compressor with bearing going out. It quit when I slowed down but started again when I hit 5th gear. Of course it is hard to define since I had my helmet on with wind and road noise. It quit after a while. At work I started the bike about 12 noon and let it heat up until the radiator fan came on but no noise. Now what could that be.

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Re: Engine stops when encountering a bump at slow speeds

Postby virgilmobile » Mon Nov 18, 2013 6:12 pm

2 things.
The noise can be the spedo cable.Lube it.
It's more interesting that it quit when you turned the handlebars rather than a bump.

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Re: Engine stops when encountering a bump at slow speeds

Postby Lynnmarn » Tue Nov 19, 2013 11:32 pm

Lubed the cable and it does fine now.

The Emgo air filter I bought doesn't fit very well. It is 1/8 inch shallower in the recessed center than the current installed filter. Because of being more shallow the lid of the case doesn't fit snug around the edges. Is that a problem. I expected it to fit just like the one I am removing. I Have verified it is the right filter at least the number on the box is correct and it is exactly the same dimensions except for the center recessed area.

New one is on the right
New one is on the right

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Re: Engine stops when encountering a bump at slow speeds

Postby Lynnmarn » Wed Nov 20, 2013 4:18 pm

Something new this morning. When I went to start it the starter motor just spun. When I hit the button again it started. The engine killed as usual when backing out of the garage. The starter spun again until I hit the button again. In all the time I have had it this has never happened. From reading posts, the starter motor is dirty/clogged and does this when very cold. It was 44 degrees this morning. The solution is to run it carefully for 100 miles with some Seafoam in it to unclog the starter motor parts. I have been running Mobil I synthetic since I bought it about 800 miles ago. Would that bother it. I have read that Rotella Diesel engine oil from walmart is good for cleaning internal parts. They say it is good for everyday use too.

I got out of the driveway and 200 feet to the main road. When I pulled right away from the stop sign the engine stopped again. I almost laid it down on the side of the road. Lucky for me I didn't go down but have a sore right leg from catching myself. It has never done that before especially after it has been running a couple of minutes. Anyone have ideas as to what happened.




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