GL 1500 has a high idle but only sometimes

[Swayze]

Hi all. I bought my first goldwing last summer. It's a 91 interstate. Serial #000001. Anyway I found when riding if I came to a stop it would sometimes idle high ( around 2000 rpm ). But only sometimes. I would guess around 25% of the time. Bike runs perfect otherwise. Any ideas? Thanks.

[offcenter]

Mine would do that "occasionally", when the outside temps were below 40 degrees.
Never does it in warm weather.
Damned if I know what causes it.
But since I rarely ride when temps are below 40, it hasn't really been
a problem.

[MikeB]

My first thought is that you have an intermittent vacuum leak. Cracked and deteriorating vacuum hoses could be the cause.

[Swayze]

Ok I will look for that. Thanks

[ct1500]

Hi all. I bought my first goldwing last summer. It's a 91 interstate. Serial #000001. Anyway I found when riding if I came to a stop it would sometimes idle high ( around 2000 rpm ). But only sometimes. I would guess around 25% of the time. Bike runs perfect otherwise. Any ideas? Thanks.

Absent a binding throttle cable and to a lesser extent enrichment cable the most likely cause would be from a carb sync problem where it was adjusted compensating for a carb problem.
If I had a dollar for every poster who said "other than this problem it runs great" I would be comfortably retired. When an engine does not run right there is always a shortfall.

[Swayze]

Can I get to all the vacum lines by removing the top plastic and air filter? Thanks

[bellboy40]

No. There are some under the air filter housing, some under the carbs and some more under the rubber mat below the carbs.

[Swayze]

Crap that's not what I wanted to hear

[WingAdmin]

The vacuum hose routing is pretty much spaghetti. It's buried, and it's extensive.

Vacuum hose routing