85 LTD no spark no fuel

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Posts: 2
Joined: Fri Nov 04, 2011 1:24 pm
Location: newalla,ok
Motorcycle: 1985 gl1200 ltd

85 LTD no spark no fuel

Post by kennyigo » Sun Sep 02, 2012 10:04 pm

I have a 85LTD that suddenly shut down on me while riding. The previous owner had hardwired the stator wires,but I've noticed one of them has been getting hot. I've also been having a lot of intermittent electrical problems, such as, buzzing in the radio,speedo going haywire, voltmeter sometimes normal, sometimes 11.4, sometimesflashing 16.0,radio changes stations. Since it shutdown, it has no spark or fuel. I'm leaning toward the ECU,but I know there are a lot of sensors, and relays as well. Any help with your opinion, or wiring diagrams, or the location of these components, would be appreciated

Thank You Kenny Igo

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Joined: Thu Jun 14, 2012 8:25 am
Location: Toronto, Ontario, Canada
Motorcycle: 1985 GL1200 Limited Edition

Re: 85 LTD no spark no fuel

Post by goldwngr » Mon Sep 03, 2012 10:15 pm

Hello Kenny...I've had my LTD for 17 years now...220,000 kms.
Having had a few issues like yours...my experience is that even though it's
human nature to suspect the big things...it's more likely the little things that gets to these bikes.
I would check your main fuse first...if that's okay and it swings over, the fuel pump relay
could be the culprit.
I've had that relay go out, and so did a buddy with an SEi.
You can check it by switching one of the other relays in the fuse box.
Good luck and keep us posted...it's helps us all keep these bikes on the road.
And by the way...I've never read of anyone's ECU going out.

Posts: 2
Joined: Fri Nov 04, 2011 1:24 pm
Location: newalla,ok
Motorcycle: 1985 gl1200 ltd

Re: 85 LTD no spark no fuel

Post by kennyigo » Thu Sep 06, 2012 6:31 am

Thanks for the reply Goldwngr. I did switch the relays on the side of the road. Ended up bringing it to my brothers house in the truck. While I had to work for a few days ,he foud the main fuse,and got the bike running. The irratic electical problems still remain. Somtimes the voltmeter reads 16.0 flashing. I think the too many amps is what blew the fuse. Sounds to me like the regulator, but with all the other crazy symtoms, I just don't know.

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Re: 85 LTD no spark no fuel

Post by virgilmobile » Thu Sep 06, 2012 7:40 am

It seems like the single most common problem with electrical issues ends up being corroded connectors and grounds.A fellow in the north,after purchasing a $450 ECU,simply unplugged his and plugged it back in to "fix" his bike.Now he has a spare.
It probably just made a better electrical connection.
I found this when I was "servicing" my 86 interstate.

Here's the link to the whole process.viewtopic.php?f=5&t=12522
Overheating wires usually indicate a corroded connection.Mine were both at the stator plug and the regulator.
With all the mods,I idle at 900 rpm,showing 13.8v and at 3000 rpm it maxes out at 14.3v.The temp of the regulator reaches about 165* after 15 minutes of running.

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