Pulse Generator Pickup coils


Information and questions on GL1100 Goldwings (1980-1983)
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PsjrS
Posts: 13
Joined: Sat Jul 11, 2015 2:32 pm
Location: livonia,michigan
Motorcycle: 1980 gl1100 interstate 1977 gl1000 1997 st1100

Pulse Generator Pickup coils

Postby PsjrS » Wed Sep 02, 2015 4:48 pm



Dose anyone have a source for new pulse generator coils? I have a 1980 interstate and I have replaced every component in the ignition system because it appears the plugs are only being fired intermittently .



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oldishwinger
Posts: 171
Joined: Sun Jul 14, 2013 11:26 pm
Location: New Zealand
Motorcycle: 1986 GL1200 Aspencade

Re: Pulse Generator Pickup coils

Postby oldishwinger » Wed Sep 02, 2015 5:07 pm

a OEM search at cyclemax may help.

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virgilmobile
Posts: 7660
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Pulse Generator Pickup coils

Postby virgilmobile » Wed Sep 02, 2015 5:30 pm

Not new but I think I have a set off a 81...
you mentioned that you changed every part and you have intermittent spark.
is this on both sets?
before you change the pulse coils.. (I'm sticking my nose in your business)..have you verified that the coils are receiving enough battery volts to make them work?The 2 ignition modules do have to be properly grounded at the frame too.
The entire ignition system (per side) has only 3 parts...pulse generator coil..ignition module and the ignition coil...-2 volts and a ground..
altho not unheard of, its rare for these pulse coils to go bad...I usually see corrosion on the pulse coil connector plug,corroded ground lug,corroded kill switch or ignition switch...

Here's a bit more info...viewtopic.php?t=17547
And here too...viewtopic.php?f=16&t=17049

PsjrS
Posts: 13
Joined: Sat Jul 11, 2015 2:32 pm
Location: livonia,michigan
Motorcycle: 1980 gl1100 interstate 1977 gl1000 1997 st1100

Re: Pulse Generator Pickup coils

Postby PsjrS » Thu Sep 03, 2015 5:04 am

Thanks for the quick reply. I believe the grounds are good. The bike will run but poorly. The frustrating thing is I've even had the pulse generator apart and got it to advance properly. It seems like back plugs don't fire as well as the front. I'm just wondering if the pickups ever partially fail.
Thanks again

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virgilmobile
Posts: 7660
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Pulse Generator Pickup coils

Postby virgilmobile » Thu Sep 03, 2015 6:28 am

Its possible if the wiring at the coil is corroded but you would be able to measure the resistance and compare it to the good one.There the only parts that can't be swapped.The coils and modules can be reversed to see if the problem follows either part.

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Right Winger
Posts: 278
Joined: Sun Nov 15, 2009 6:46 pm
Location: Pittsburgh
Motorcycle: 85 ltd
84aspy

Re: Pulse Generator Pickup coils

Postby Right Winger » Thu Sep 03, 2015 8:27 pm

I don't know about new but you ought to keep checking E-bay for used ones . I just bought a (spare) pair for my 1200s with only 15K on them for less than 90 bucks SHIPPED :?:

They are parting out a wrecked 85 LTD with 15k on it. I bought a few other things as well . Prices pretty decent too

PsjrS
Posts: 13
Joined: Sat Jul 11, 2015 2:32 pm
Location: livonia,michigan
Motorcycle: 1980 gl1100 interstate 1977 gl1000 1997 st1100

Re: Pulse Generator Pickup coils

Postby PsjrS » Fri Sep 04, 2015 4:06 am

I get 500 ohms on both pickup coils. It's possible I'm sparking up the wrong tree here. I'll look at connections and grounds again. If anyone else has dealt with a wired misfire I'd appreciate any input.




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