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Discussion Starter · #1 ·
My recently purchased 1200 LTD ran fine until today, when it would not start. It would turn over but has no spark at the plugs. The battery is new, and turns the bike over fine. Any ideas on what to check? it is the fuel injected model and has a lot of electronics on it, but everything seems to be working.
thanks
 

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1985 GL1200 A
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My recently purchased 1200 LTD ran fine until today, when it would not start. It would turn over but has no spark at the plugs. The battery is new, and turns the bike over fine. Any ideas on what to check? it is the fuel injected model and has a lot of electronics on it, but everything seems to be working.
thanks
The first thing I'd check is your main fuse, located to the right of the battery, at least on my '85 Aspy. If that's fine, I'd check the other fuses in front of the gas tank under the front compartment of the faux gas tank cover. Don't worry, the smart guys will show up shortly!:ROFL:
 

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Just Winging It
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The kill switch on the right side handle bar is in the on position right?????????????????? It is ok if it is not then you fix and start it you can tell us.
 

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Vintage Rider
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I had that problem with my LTD. I remember it was caused by a broken connection in a wire that went to the ECU under the trunk. The connection was broken INSIDE the factory wrapped harness, and is not shown in the schematic in my Clymer manual. I'll go back and see if I can find the old thread on it. Are you getting any trouble codes on the ECU? There is also a resistor mounted on the back fender under the seat. Make sure the connection to it is good.
 

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Discussion Starter · #5 ·
Ok, i don't seem to have any power to the ECU, no lights on it. Fuses seem ok, I checked the Kill switch and it was ok, now I am trying to find the tilt sensor and check it out. The instrument panel lights up except for the fuel light.
 

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If you don't have power to the ecu, check your second 30 amp fuse. It provides the power to the main relay, which in turn, powers the ecu and fuel pump relays.
 

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Just had a similar thing happen and it was the pulse generators that stopped working. There is a way to test them with an ohmmeter at the connector under the false tank (at least that's where it is on mine- make sure you test the correct 4 pin connector (not like I did). My Haynes manual had a troubleshooting page that walked me through the testing.
 

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Discussion Starter · #8 ·
Well, i spent this afternoon taking the seat off and getting to the ECU, I had found that I had power through all the fuses, and the kill switch was ok, never did check out the tilt sensor, but after disconnecting the ECU cord, and finding power to it, and reattaching it, I discovered that I had power to it again. The bike started!! The connection didn't seem to be corrosive or anything, but it had to be a bad connection I would think. Now its running again. Thanks for all the ideas.
 
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