Pulse Generator/coil shutting down engine on highway!


Information and questions on GL1200 Goldwings (1984-1987)
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djfassero
Posts: 3
Joined: Mon Nov 13, 2017 4:28 pm
Location: San Rafael, CA
Motorcycle: 1985 GL1200A Aspencade

Pulse Generator/coil shutting down engine on highway!

Post by djfassero » Mon Nov 13, 2017 5:09 pm



Hello, Im a newbie to the Goldwing world. Owned several Silverwing 500's, never left shut down on highway like this!

I just purchased my 85 Aspencade GL1200 and whilst riding it home, it stalled out after warming up to 4 bars on the LCD gauge and after about 15 miles on the road. Shut down, let cool to 2 bars on temp gauge, it fired back up. THis time it ran for about 5 miles down the road. Same thing, shut down, and cooled to 2 bars before it would restart. Would not start at 3 bars on Temp guage, repeated this 3 more times before getting home.

I've heard the pulse generators are culprit. Any other things besides this? Anyone? I plan to replace the pulse generators, and have heard it's not too hard. Just remove radiator and 'float' outward. Has anyone done this job before? Do you have to disconnect hoses, etc?

to sum up, I had two questions, when the 85 Aspencade GL1200 shuts down like this after heating up all of a sudden on the highway, and won't restart until cooled down...
1. Besides pulse generators, what else should I look into replacing, adjusting cleaning, etc?
2. Has anyone replaced pulse generators? Any photos, videos would be helpful!

Thanks everyone, looking forward to learning and sharing information on this forum

Cheers,
John F. :D



User avatar
Ohara
Posts: 44
Joined: Mon Nov 16, 2015 9:05 am
Location: Ontario Canada
Motorcycle: 1986 Interstate
1986 Aspencade

Re: Pulse Generator/coil shutting down engine on highway!

Post by Ohara » Tue Nov 14, 2017 5:02 am

The symptoms you are describing certainly indicate your pulse generators are bad. You can check them by disconecting them, they plug in under the tank right in front of the 8 in plug for the voltage regulator. When cold,you should see around 320 resistance with your multimeter, if that is the case plug,them back in and run (idle it in place) until it shuts down. Now unplug them and check,resistance again, if you see 0 ohms now they are no good.
I bought a new set off eBay, Partzilla sells new ones as well.They are inside the front timing cover and you really should replace the timing belts while,you are at it. Good luck.

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Rednaxs60
Posts: 1336
Joined: Wed Nov 18, 2015 12:44 pm
Location: Victoria, British Columbia, Canada
Motorcycle: 1985 GL1200 LTD, 2008 GL1800

Re: Pulse Generator/coil shutting down engine on highway!

Post by Rednaxs60 » Tue Nov 14, 2017 10:27 am

Check the coils as well. Do you have the service manuals?
"When you write the story of your life, don't let anyone else hold the pen"

Ernest

djfassero
Posts: 3
Joined: Mon Nov 13, 2017 4:28 pm
Location: San Rafael, CA
Motorcycle: 1985 GL1200A Aspencade

Re: Pulse Generator/coil shutting down engine on highway!

Post by djfassero » Tue Nov 14, 2017 12:46 pm

Hey thanks to both of my new Canadian friends out there for your helpful replies,
always count on the Canadians for friendly assistance :)

Ill check out all the associated electrical components and the belts, too.
Thinking of bringing into shop for this service as well as the coolant change, anyway.
The rated shop service charge is .6 hours for the pulse generators, BTW. which is $60 here.
Just called yesterday...

Thanks again!
John

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bellboy40
Posts: 246
Joined: Fri Nov 27, 2009 1:13 pm
Location: Brewton, AL
Motorcycle: 2000 GL1500SE
Candy Spectra Red

Re: Pulse Generator/coil shutting down engine on highway!

Post by bellboy40 » Tue Nov 28, 2017 11:14 am

djfassero wrote:
Tue Nov 14, 2017 12:46 pm
snip...
The rated shop service charge is .6 hours for the pulse generators, BTW. which is $60 here.
Just called yesterday...

Thanks again!
John
That service tech will have to be quick to get those pgs replaced in 36 minutes.

User avatar
Rednaxs60
Posts: 1336
Joined: Wed Nov 18, 2015 12:44 pm
Location: Victoria, British Columbia, Canada
Motorcycle: 1985 GL1200 LTD, 2008 GL1800

Re: Pulse Generator/coil shutting down engine on highway!

Post by Rednaxs60 » Tue Nov 28, 2017 3:06 pm

I think bellboy40 is correct. Should do a video showing us how to do it in 1/2 hour. Get it in writing I would think.
"When you write the story of your life, don't let anyone else hold the pen"

Ernest

djfassero
Posts: 3
Joined: Mon Nov 13, 2017 4:28 pm
Location: San Rafael, CA
Motorcycle: 1985 GL1200A Aspencade

Re: Pulse Generator/coil shutting down engine on highway!

Post by djfassero » Tue Nov 28, 2017 4:25 pm

Hey guys, the pulse generators were the problem, bought new ones through Patzilla, $89. It took 2.5 shop hours, which at $120 an hour totaled $360. This job is best left with a qualified tech as it was a bear to get at, and required lots of patience. So the total for repair was about $450.

My 85 Aspencade Gl1200A has 95,000 miles on it, so if you are reaching this mileage, you should strongly consider timing belts if needed and pulse generators as its all the same disassembly. The previous owner had just replaced timing belts at 93,000 and should have done the PGs as preventive medicine.
He gave me break on purchase price that covered this expense tho.
Happy riding...



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