GL1500 Won’t start


Information and questions on GL1500 Goldwings (1988-2000)
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DJPrototypikal
Posts: 4
Joined: Mon Jun 01, 2020 8:52 am
Location: Toronto Canada
Motorcycle: 1990 Gold Wing 1500 SE

GL1500 Won’t start

Post by DJPrototypikal »



Hi all. Looking for advice. 1990 GL1500SE

Bike was running. Wouldn’t start after a ride in rain and sitting a couple days.

- Cleaned all electrical connections on right side of bike.
- Replaced 3x important Relays and checked all fuses.

- Did ECM test from workshop. Everything in spec.

- Checked fuel pump. Works.

- Getting strong spark from all cylinders.

Bike is getting fuel, air and electrical. Turns over, won’t catch, but will backfire after 6 or so seconds cranking.

I’m thinking this is a timing issue and the source is the ECM. Any way to confirm this? Any other suggestions?

Thanks. Niall


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Tamresnier
Posts: 15
Joined: Tue Jul 11, 2023 1:45 pm
Location: Estonia
Motorcycle: 1989 GL1500
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Re: GL1500 Won’t start

Post by Tamresnier »

Measure pick-up coils ohms. You can do it from ECU, do not waste youte time by measuring from the coils as I did.
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JustSomeITguy
Posts: 4
Joined: Wed Apr 17, 2024 2:11 am
Location: Canada
Motorcycle: 1997 gl1500 Aspencade
2002 ST1100

Re: GL1500 Won’t start

Post by JustSomeITguy »

You could have a look through viewtopic.php?f=6&t=21972
Just Some IT Guy
1997 1500 Aspencade
2002 ST 1100
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Rambozo
Posts: 3698
Joined: Sun Apr 01, 2018 8:36 pm
Location: Disneyland
Motorcycle: 1992 GL1500 Aspencade
Ducati Monster

Re: GL1500 Won’t start

Post by Rambozo »

Could be old coils and plug wires. They get hairline cracks in the insulation and don't like water. Once it dries out they usually come back. The spark will arc to ground or an adjacent wire. Mine does this from rain or if I get too aggressive washing it. Just been too lazy to take care of it yet.
Also be sure to check battery voltage when cranking. The 1500 is very picky about voltage. (Bad design in my opinion.)
DJPrototypikal
Posts: 4
Joined: Mon Jun 01, 2020 8:52 am
Location: Toronto Canada
Motorcycle: 1990 Gold Wing 1500 SE

Re: GL1500 Won’t start

Post by DJPrototypikal »

Hi guys. Got it started. Two issues - I cleaned the plugs again…they were fouled quickly.

Bike started then died again.

We checked the wires around the ecm - and wiggled the connector for the ignition coils by the ecm. Bike cut out immediately. We played with this connector and the bike started again - cut out again when wiggled.

Cut that 4pin connector out and replaced each of the 4 wires with bullet connectors.

Bike runs great.
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Charlie1Horse
Posts: 777
Joined: Mon Sep 16, 2013 9:35 pm
Location: Jacksonville, Florida
Motorcycle: 1986 GL1200A Aspencade
1992 GL1500I Interstate

Re: GL1500 Won’t start

Post by Charlie1Horse »

Glad you found the trouble. I always put some dielectric grease in these connectors any time I disconnect one and reconnect it. It helps to keep moisture out so you don't get corrosion on the pins. Honda should have used all waterproof connectors on these bikes to keep adequate power flow to each accessory.
Russell


Those who say it cannot be done should try not to interrupt those who are doing it.
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