Engine stops and restarts by itself


Information and questions on GL1500 Goldwings (1988-2000)
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rexles
Posts: 53
Joined: Thu Sep 03, 2009 7:47 pm
Location: Holland, OH
Motorcycle: 1995 GL1500 Aspencade

Engine stops and restarts by itself

Postby rexles » Mon Sep 10, 2012 7:06 am



After reading the post from Rob I need to post my own problem.
My 95 1500 quit running on me yesterday after being on the hiway for about 15 mi. Backfired and sputtered and quit. Pulled over and checked kill switch and put it in neutral and it started right back up.
Rode 50 mi to destination without any further problems. Stopped for maybe 1/2 hr and headed back. Rode another 50 mi, sometimes at speeds around 85mph and stopped again for another 1/2 hr before heading home. About 1o mi into the ride home it backfired and spit and quit again. I would start it and it would run for a few seconds and quit. Did this several times, then I started riding down the berm of the turnpike. Could get going but it would backfire and quit then start back up and go for a while them backfire and die then start again by itself going down the road. Did this most of the way home until I got about 4 mi from home and started running pretty good again.
Fuel tank was about 1/4 when I left home and reserve light was on by the time I left for home. Ran good when it was running.
Maybe a bare wire some where?



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dingdong
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Re: Engine stops and restarts by itself

Postby dingdong » Mon Sep 10, 2012 7:28 am

Try running with the fuel cap loose or off. The cap has a vent that can get clogged and will stop the flow of gas.
Tom

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RBGERSON
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had every year from 75 to 83

Re: Engine stops and restarts by itself

Postby RBGERSON » Mon Sep 10, 2012 8:09 am

Clogged fuel filter? but the backfiring doesn't fit with that..backfire equals fires when a valve is open and shouldn't' be..timing off???
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

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virgilmobile
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Re: Engine stops and restarts by itself

Postby virgilmobile » Mon Sep 10, 2012 9:21 am

The timing won't be off.you can get a bike to backfire by killing the ignition for 3 seconds while driving, the engine run some fuel into the exhaust ,light up the ignition again.it will backfire.I tried it.Pretty loud too :D
I suspect the ignition system failed intermittently.you can rig up a test lamp to the ECM 12 volts and watch it to verify the problem or suspect the bank angle sensor,kill switch,ignition relay,etc.

rexles
Posts: 53
Joined: Thu Sep 03, 2009 7:47 pm
Location: Holland, OH
Motorcycle: 1995 GL1500 Aspencade

Re: Engine stops and restarts by itself

Postby rexles » Mon Sep 10, 2012 9:24 am

I do not believe it is a fuel problem. It runs good when it is running.

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WingAdmin
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Re: Engine stops and restarts by itself

Postby WingAdmin » Mon Sep 10, 2012 9:37 am

I agree with dingdong - try loosening the fuel cap and see if the problem reoccurs. Or, wait for the problem to occur, then remove the gas cap and see if there is a sudden rush of air (due to vacuum in the fuel tank). The fuel cap vent may be partially clogged, restricting air getting into the tank to replace the fuel being used. Eventually the vacuum will overwhelm the ability of the pump to pull gas, and you'll "run out of gas".

You said that it "sputtered and quit" - which to me is saying fuel, not ignition. Ignition generally causes the engine to stop like it was shut off.

The backfiring can be from a couple causes: If the mixture is too lean to ignite (due to fuel starvation), it will then push the unburned mixture into the exhaust. If a subsequent cycle ignites its charge, and that hot mixture is then pushed into the exhaust, it will ignite the unburned mixture from the previous cycle, causing a backfire. This can damage both the exhaust and exhaust valves (which aren't designed to handle large backpressure from the exhaust).

This can also happen if the mixture doesn't ignite for another reason, like intermittent ignition (electrical). You can try this yourself - while running the engine above idle, switch off the kill switch, then quickly turn it back on. You should be rewarded with an ear-splitting backfire. I wouldn't recommend doing this a lot - for the above mentioned reasons.

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robb
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Re: Engine stops and restarts by itself

Postby robb » Mon Sep 10, 2012 10:06 am

Could be a fuel pickup issue due to low fuel and uneven riding conditions. When I ride the twistied I make sure the tank is full as skipping has been noted going up and down hills. Could even be water collected in fuel filter that can intermittently impede flow.

rexles
Posts: 53
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Motorcycle: 1995 GL1500 Aspencade

Re: Engine stops and restarts by itself

Postby rexles » Mon Sep 10, 2012 11:33 am

Put in a couple gl of premium fuel and need to get some dry gas just incase.
When I start the engine it fires right up. It runs for 7-10 seconds just fine then dies. It will start right back up and do the exact same thing.
I do this with the gas cap tight or off and it does the same thing.
I checked my kill switch by jumpering across the 2 wires that feed it and it makes no difference in how long it stays running.

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virgilmobile
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Re: Engine stops and restarts by itself

Postby virgilmobile » Mon Sep 10, 2012 2:24 pm

Another easy test to see if it's spark or gas.pull 1 plug wire and lay a spare plug from it.watch the spark as it dies.if it is still sparking as the engine dies off it's fuel related.

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robb
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Re: Engine stops and restarts by itself

Postby robb » Mon Sep 10, 2012 7:29 pm

Before pulling panels might want to check the fuel filter. Even in a car if filter is blocked it will use fuel faster than it can arrive. The initial pressure of pump can push fuel but rapidly clog and stop. Can remove filter, clean and replace. If it fires every time I would rule out an electrical issue.

rexles
Posts: 53
Joined: Thu Sep 03, 2009 7:47 pm
Location: Holland, OH
Motorcycle: 1995 GL1500 Aspencade

Re: Engine stops and restarts by itself

Postby rexles » Mon Sep 10, 2012 7:37 pm

robb wrote:Before pulling panels might want to check the fuel filter. Even in a car if filter is blocked it will use fuel faster than it can arrive. The initial pressure of pump can push fuel but rapidly clog and stop. Can remove filter, clean and replace. If it fires every time I would rule out an electrical issue.

I can run the engine at high RPMs and it still runs the same amount of time as if it's at idle. About 7-10seconds. I am thinking if it is a fuel flow problem it would run less time at high RPMs than it does at idle. Am I wrong?

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robb
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Re: Engine stops and restarts by itself

Postby robb » Mon Sep 10, 2012 9:16 pm

All depends, 10 seconds at idle, 7 seconds high rpm. Too short a time to make a judgement call. Fuel pump maintains a certain amount of pressure and it may be it takes 7-10 seconds to build to it. Either way it is easier to rule out the simple servicable parts first.

rexles
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Joined: Thu Sep 03, 2009 7:47 pm
Location: Holland, OH
Motorcycle: 1995 GL1500 Aspencade

Re: Engine stops and restarts by itself

Postby rexles » Tue Sep 11, 2012 8:25 pm

OK today I tested the fuel pump output with and without the fuel filter on and everything checks out OK fuel wise.
I removed the cover to allow access to the ECM and the plug for the ECM was loose. Seems the plug and cover was kind of buggered up and when I held the plug in tight it would run fine and when I moved it ever so slightly it would stop running. If I jiggled it as it was stalling it would backfire and start up again.
Just need to find some way to make the plug stay tight in the socket.
At least I found the problem.
Thanks for the suggestions

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robb
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Re: Engine stops and restarts by itself

Postby robb » Tue Sep 11, 2012 10:39 pm

Can use plastic Tyraps.

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WingAdmin
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Re: Engine stops and restarts by itself

Postby WingAdmin » Wed Sep 12, 2012 8:44 am

If the plug is loose, and you "fix" it by moving it to a point where it works and rigging it to stay there, you're only fixing it temporarily - you're fixing the symptom, rather than the cause.

Take the plug off, clean both the plug and the connector very well with a high-quality contact cleaner. Inspect the female connectors to see if any of them are widened - if so, pull those connectors and crimp them tight again. Chances are, cleaning it with contact cleaner will be enough to solve your problem.

rexles
Posts: 53
Joined: Thu Sep 03, 2009 7:47 pm
Location: Holland, OH
Motorcycle: 1995 GL1500 Aspencade

Re: Engine stops and restarts by itself

Postby rexles » Wed Sep 12, 2012 12:17 pm

While running the engine with the wires to the ECM exposed I gently wiggled one wire at a time until I found the wire that was stalling the engine when moved. I then looked closely at the offending terminal and saw the clip on the plug looked spread apart and crimped it down slightly and it took care of the problem. Took it for a ride with all the engine covers and tank cover off( boy does it ever throw out alot of heat that way) and every thing worked ok. Purposely hit all the bumps in the road I could. Still Ok
Put everything back together and cleaned it up and as soon as I eat some lunch I am going for a ride to see if it's still OK




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