Howling noise


Information and questions on GL1500 Goldwings (1988-2000)
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dlfierce
Posts: 23
Joined: Thu May 03, 2012 9:28 pm
Location: Glenboro, Manitoba, Canada
Motorcycle: 1989 GL1500

Howling noise

Postby dlfierce » Mon Oct 12, 2015 10:31 am



Hi all, hoping I can get a few suggestions before ripping and tearing.. On Saturday I took my 89 1500 for about a 400 km ride from my place in southwest Manitoba into Winnipeg and back. When I got into Winnipeg I noticed a slight howling noise when decelerating. This noise just kept getting louder but only on deceleration, When accelerating or at a constant speed there was no noise. As each shift was made you could also hear the howling. I thought maybe a wheel bearing but then I think it should be making the noise all the time whether speeding up or slowing down. The noise is most prominent between about 40-80 kph but only when decelerating. The only thing I have done to the bike recently is to change the Timing Belts but that shouldn't have anything to do with it unless one of the belt tensioner bearings is starting to go maybe. By the time I got back home late a night it was quite loud, again only on deceleration. Other than that the bike ran fine. I'm at a bit of a loss and any suggestions would be appreciated.



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virgilmobile
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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: Howling noise

Postby virgilmobile » Mon Oct 12, 2015 11:02 am

Start with the easy stuff.Disconnect the spedo cable at the front wheel,secure and test again.
Decelerating will position the cable slightly different.

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WingAdmin
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Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Howling noise

Postby WingAdmin » Mon Oct 12, 2015 1:18 pm

Also try pulling the clutch lever in and let the engine fall to idle while decelerating to see if anything changes.

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bntyhntr6975
Posts: 134
Joined: Tue Sep 15, 2015 2:14 pm
Location: Fredonia, Ks
Motorcycle: 1995 GL1500A
2005 VTX1300C

Re: Howling noise

Postby bntyhntr6975 » Mon Oct 12, 2015 3:18 pm

My '95 has been doing some howling too. I know its in the speedo system, and pretty sure its in the speedo itself. New cable (and lubed), lubed sender unit at tire change. Kinda hard to pinpoint noises tho. Mine would start in on hard bumps, then go away after about 30 seconds, usually. But it has done it on accel or decel also. I can see the speedo needle bouncing a little while the growling is going on. Not real sure if I can get the can of lithium grease up behind the speedo unit to spray it, but Im gonna try.
Lube the cable first, its easiest. Then move on to the other components if need be.

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dlfierce
Posts: 23
Joined: Thu May 03, 2012 9:28 pm
Location: Glenboro, Manitoba, Canada
Motorcycle: 1989 GL1500

Re: Howling noise

Postby dlfierce » Mon Oct 12, 2015 3:22 pm

I tried pulling the clutch lever in during deceleration and it eliminates the noise while doing so. Does this indicate a clutch or transmission issue or might I get away with bleeding the clutch system?

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bntyhntr6975
Posts: 134
Joined: Tue Sep 15, 2015 2:14 pm
Location: Fredonia, Ks
Motorcycle: 1995 GL1500A
2005 VTX1300C

Re: Howling noise

Postby bntyhntr6975 » Mon Oct 12, 2015 3:24 pm

Pretty much rules out the speedo system then. Good luck.

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WingAdmin
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Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
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1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Howling noise

Postby WingAdmin » Tue Oct 13, 2015 9:30 am

Can you tell if the noise is coming more from the engine or the rear wheel area?

If you have the bike on the center stand, is the rear wheel loose at all - moving from side to side? Checking for worn wheel bearings here.

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dlfierce
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Joined: Thu May 03, 2012 9:28 pm
Location: Glenboro, Manitoba, Canada
Motorcycle: 1989 GL1500

Re: Howling noise

Postby dlfierce » Tue Oct 13, 2015 10:07 am

I will try it on the center stand and check the rear bearings however when I took it for a short ride on the street and pulled in the clutch while going about 50 - 60 KPH there was no more noise other than regular engine noise. If it was the rear wheel bearing would it not continue to make noise even if clutch was pulled in?

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dlfierce
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Joined: Thu May 03, 2012 9:28 pm
Location: Glenboro, Manitoba, Canada
Motorcycle: 1989 GL1500

Re: Howling noise

Postby dlfierce » Tue Oct 13, 2015 1:32 pm

Ok, so I put the bike on the center stand and grabbed the rear wheel and tried to pull it back and forth without any movement but when I rotate the wheel while in neutral I am getting a slight clicking noise which I don't believe should be there. I started the bike and put it into gear and gave it some gas with no noise, second gear was the same but third gear started the noise again. I had my wife hold the throttle open a bit and then release it while I crawled around on the floor and it appears to be coming from toward the rear wheel or just before, hard to tell exactly. I also noted that the noise actually starts when put into third gear whereas when I was driving on the street it couldn't be heard until you decelerated. Could a U-Joint cause this problem. I had the back end apart two years ago when changing tires and lubed the rear end but never touched the other end of the drive shaft.

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tyrevere
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Location: milford pa
Motorcycle: 1988 gl1500

Re: Howling noise

Postby tyrevere » Thu Oct 15, 2015 12:00 am

mine was the speedo cable......within about a week later it broke...got a new one and noise is gone

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dingdong
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Motorcycle: 1976 gl1000
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Re: Howling noise

Postby dingdong » Thu Oct 15, 2015 7:37 am

Yes, all signs point toward the u-joint. If you decide to get a new one also get a new boot. The new joints are larger and will rub with the old boot. Plan on lubing the drive splines so you will need a can of Moly paste. If you have it done make sure the shop does this.
Tom

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WingAdmin
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Posts: 17045
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Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Howling noise

Postby WingAdmin » Thu Oct 15, 2015 8:46 am

dingdong wrote:Yes, all signs point toward the u-joint. If you decide to get a new one also get a new boot. The new joints are larger and will rub with the old boot. Plan on lubing the drive splines so you will need a can of Moly paste. If you have it done make sure the shop does this.


And have a read through How to replace your universal joint (and driveshaft)

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dlfierce
Posts: 23
Joined: Thu May 03, 2012 9:28 pm
Location: Glenboro, Manitoba, Canada
Motorcycle: 1989 GL1500

Re: Howling noise

Postby dlfierce » Thu Oct 15, 2015 11:34 am

Thank you for the information and I did read through the universal joint how to, I think I may have to wait for a little warmer weather to strip the bike down as it is starting to get cold here (-6 C tonight) and I don't have any heat in my garage.




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