gl1200 backfiring,quitting running


Information and questions on GL1200 Goldwings (1984-1987)
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hotwire
Posts: 42
Joined: Mon Sep 05, 2011 8:57 pm
Location: mosheim,tn
Motorcycle: 1985 gl1200 aspencade

gl1200 backfiring,quitting running

Postby hotwire » Tue Aug 14, 2012 9:20 pm



Hi,guys, my 85' Aspy has started to do some weird stuff, maybe someone else could point me in the right direction. At first, the bike would just suddenly quit, like maybe when coming to the stop sign about two miles from the house, might even backfire thru the exhaust, but would immediately start back up again, and not do it again for several rides. But then it would happen again at road speed, lurching and backfiring like a rear firing cannon, ha, ha! But most always, just leaving it in gear and easing out on the clutch, it will start to run again, and may not happen for a while.
The other day,after a ride of about 10 miles, I parked at home, the bike sat for about an hour or more, then wouldn't start. It would crank good, but backfire thru the exhaust, and not hit. Let it set for a bit longer, and it started right up. After it does this, it may run good to town, (about 18 miles and back without a hitch. Just don't wanna waste a lot of time lookin when somebody could help troubleshoot, thanks everyone.



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WingAdmin
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Posts: 17046
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: gl1200 backfiring,quitting running

Postby WingAdmin » Tue Aug 14, 2012 11:24 pm

Just a thought, but because of the intermittent state of the problem, check the master (dogbone) fuse for cracks. Don't just look at it, remove it and check its condition. If it's bad (or even if it's good) you can replace it with a 30-amp fuse holder and blade fuse.

If it is cracked, heat can cause intermittent electrical problems that can manifest themselves the way you have described.

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rono24
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Joined: Sun Jul 10, 2011 7:22 am
Location: west milton ohio
Motorcycle: 1992 gl1500SE

Re: gl1200 backfiring,quitting running

Postby rono24 » Wed Aug 15, 2012 11:26 am

Had the same problem replaced the pulse generators and fixed it

hotwire
Posts: 42
Joined: Mon Sep 05, 2011 8:57 pm
Location: mosheim,tn
Motorcycle: 1985 gl1200 aspencade

Re: gl1200 backfiring,quitting running

Postby hotwire » Wed Aug 15, 2012 9:48 pm

Thanks, guys for your input, I have already replaced the original main "dogbone" fuse with 30 amp automotive fuse holder, but some other corrosion or bad connection could be possible, a good path to follow, maybe. And on the pulse generators, where are they, is there any way to diagnose them, etc?
Any foreknowledge on the subject will be greatly appreciated, as I'd like to get some ride time in this year, it has been so rainy here! And now, my wing is sick, yuk!!! nuff said !

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rono24
Posts: 123
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Location: west milton ohio
Motorcycle: 1992 gl1500SE

Re: gl1200 backfiring,quitting running

Postby rono24 » Thu Aug 16, 2012 4:20 am

The pulse generators set behind the timing belts if you have changed the timing belts also a good time to do that there is a ohm value for them you can find that on this forum. I have a pair of oem pulse generators if you are interested

hotwire
Posts: 42
Joined: Mon Sep 05, 2011 8:57 pm
Location: mosheim,tn
Motorcycle: 1985 gl1200 aspencade

Re: gl1200 backfiring,quitting running

Postby hotwire » Sun Aug 19, 2012 9:50 pm

I Removed the pulse generators from the bike, ohmed them myself, and took them to our local Honda shop and had the Honda mechanic check them as well, he o.k.ed them too. Put the bike back together and rode one trip without a glitch, ( while I had all the fairing and top cover off, I cleaned most all the wiring connectors), but rode today and problem reoccurred. Surely somebody has had this happen before???? I hear that the gearshift sensor has something to do with the ignition????? maybe the engine timing????? Acts just like a loss of fire and will completely stop (now), and after a few minutes start again, (sometimes after a good while), left me out on the road in the dark tonight. I'm at a loss. All the lights and everything else stays on o.k. Did notice while I was taking my foot and moving the shifter back to neutral, the starter acted like it wanted to operate, just a little???
Don't have a clue as to why that would happen. Maybe I need to take up horseback riding !!

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rono24
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Location: west milton ohio
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Re: gl1200 backfiring,quitting running

Postby rono24 » Mon Aug 20, 2012 4:31 am

Just because the pulse generators ohmed out does not mean that are good,they get hot and then will shut down . I bet if you change them you will solve your problem.

thesaint
Posts: 2
Joined: Mon Aug 13, 2012 9:09 am
Location: Sunbury,Pa.
Motorcycle: 1986 honda goldwing 1200 Aspencade
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Re: gl1200 backfiring,quitting running

Postby thesaint » Mon Aug 27, 2012 7:41 pm

[i]hello i also have the same problem, i have a 1986 GL1200 goldwing took it for a ride and while rideing the idle went sky highafter it warmed up, when i took it home and shut it off while it was at a high idle that wouldn't go down, it also backed fired and stopped running now i have nothing when i turn on the key i checked the fuses in the tank, checked the main fuse looks ok ...............HELP I NEED TO GET MY RIDE RUNNING AGAIN.... help please

richard s.
Posts: 2
Joined: Tue Sep 04, 2012 3:26 pm
Location: almena,wi.
Motorcycle: 1987,honda,gl1200i interstate

Re: gl1200 backfiring,quitting running

Postby richard s. » Tue Sep 04, 2012 3:51 pm

Had trouble with my 87 interstate backfiring and cutting out. Turned out the plug from the main harness to the reg/rectifier had several wires burned off so wasn't charging battery. I cut plug off and soldered the wires which alleviated the backfiring but, now I get 15.2v at battery ,running. Talked to honda mech.. He said rec/regulator was bad, ordered new one, same thing.

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WingAdmin
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Posts: 17046
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: gl1200 backfiring,quitting running

Postby WingAdmin » Tue Sep 04, 2012 4:53 pm

richard s. wrote:Had trouble with my 87 interstate backfiring and cutting out. Turned out the plug from the main harness to the reg/rectifier had several wires burned off so wasn't charging battery. I cut plug off and soldered the wires which alleviated the backfiring but, now I get 15.2v at battery ,running. Talked to honda mech.. He said rec/regulator was bad, ordered new one, same thing.


The problem is usually voltage loss on the black "sense" wire on the regulator. It sees reduced voltage coming from the ignition, so it tries to "boost" the voltage to compensate. Have a look at this thread for information on diagnosing and easily fixing it.

Calvin Bell
Posts: 1
Joined: Sun Sep 09, 2012 8:13 am
Location: Bessemer, AL
Motorcycle: 1986 Goldwing Aspencade

Re: gl1200 backfiring,quitting running

Postby Calvin Bell » Sun Sep 09, 2012 1:22 pm

rono24 wrote:The pulse generators set behind the timing belts if you have changed the timing belts also a good time to do that there is a ohm value for them you can find that on this forum. I have a pair of oem pulse generators if you are interested


Hello My 1986 gl 1200 aspencade is doing the exact same thing. It cuts off randomly when I'm driving down the road. It usually cranks up within seconds after I cut the switch off and turn it back on. I initially thought that is was my fuel filter restricting the fuel causing the backfiring and light miss in the engine. I installed a new filter and also check the fuel pump to insure that it was working properly. I rode down the interstate yesterday and it put me down again. The thought occured to me that it seems like a pick-up coil of something that is getting hot and then cooling down. I believe that its the pulse generator as you have describe.

Where can I purchase this item as Honda has discontinued it. Can some one help me with this. The weather is calling me and the wife and I are ready to ride. HELP!!!




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