erratic idle 1994 GL1500se

Information and questions on GL1500 Goldwings (1988-2000)
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Posts: 1
Joined: Thu May 12, 2011 4:44 pm
Location: Rexburg, Idaho
Motorcycle: 1994 gl1500se

erratic idle 1994 GL1500se

Post by dirtuser » Wed Nov 16, 2011 3:42 pm

This bike has always idled smooth & perfect. Recently the idle is surging about 200 rpm-nuetral just sitting or at a stop sign. Other than that it is running strong & smooth. I havn't even looked for the carbs yet. Soon it will be snowing & I will have a few days to do some looking & inspections. Any ideas, or is there a problem area--vacuum lines or intake gaskets??
Dave S

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Joined: Thu Oct 27, 2011 9:56 am
Location: Dalton, Georgia
Motorcycle: 1995 GL1500I

Re: erratic idle 1994 GL1500se

Post by Mosko » Wed Nov 16, 2011 4:25 pm

I'm working on a '95I that has the same problem. This one has been sitting for a while. I've figured how to fix most of the problems thus far by reading the older posts here, (couldn't have done it otherwise, thanks!) At times, I've heard a slight whistle (vacuum leak sound). Earlier today, I stuck the spray straw of a WD40 can up under the rubber mat that covers the intake manifold and gave it a couple of squirts and the idle increased. I'm sure there is a vacuum leak under there somewhere. I couldn't see naturally, where all I sprayed the stuff, so I can't identify where the leak is exactly, yet! But I'm now sure there is one.

Best Regards... Mosko

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Re: erratic idle 1994 GL1500se

Post by detdrbuzzard » Thu Nov 17, 2011 9:02 am

i get that too this time of year with the outside air tempature going from cold to warm. the temp outside is about 35f and my 1500 wing will idle just over 1000 rpm but as the temp warms up the idle will surge between 900 and 1000 rpm. eventually it will settle at 900 rpm unless the temp changes
'99 ST1100, '93 se
'75 cb750k, '79 cb 750f, '79 cb750 superK
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.... william

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Re: erratic idle 1994 GL1500se

Post by robb » Sat Nov 19, 2011 9:40 am

Pull the side covers to access the plugs and check the head vacumn tubes. They usually crack in the sharp bend leaving the head.

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Motorcycle: 1988 GL1500 I
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78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: erratic idle 1994 GL1500se

Post by virgilmobile » Wed Dec 14, 2011 11:49 pm

Check this post.It may pertain to your problem as well as mine....viewtopic.php?f=6&t=9356

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