[N5HQ]

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Greetings,

I’ve been searching the archives and I haven’t run across what I need. My 1989 Goldwing with 35,000 miles has developed a problem and I think maybe a second symptom that is related. About three weeks ago I noticed that when I would let off the throttle the RPM’s would not fall like they should. They fall to about 2,000 to 2,200 RPM and just hang there for three or four seconds then slowly drop to idle.

I have also noticed that the cruse control seems to wonder up and down more that it use to. It seems to want to run around 70 to 72 MPH no mater what speed I set it to. I don’t think that would be a very good defense in court so I have to use it much less lately.

I was at Wing Ding 31 in Tulsa last week and talked to Stu in his seminar and his diagnosis was collapsing and/or leaking vacuum lines. I stopped by the local Honda Dealer and spoke with the shop foreman and he provided a schematic of the vacuum lines and I looked at a GL1500 that was in the shop getting the very same thing done to it. Looks like a major teardown and I’m not looking forward to it. I asked how much to have them do it for me and he told me that they weren’t allowed to take in any bike older than a 1993. He also said that they had waited for three weeks for some of the lines to come in for the bike they were working on.

OK, here is my question:

Does anyone know which lines on that age of bike are the problem lines?

I would like to get them on order before I take the bike apart. I really hate the idea of it being laid up for a month or so. I’m planning a cross country trip in September so I need to get this addressed soon.

Thanks for any and all help.

N5HQ

 

[N5HQ]

imported post

I looked at some of the hoses that were taken off the bike they were servicing and there is just no way a stright vacuum line could be used. It also seems that every hose was a different diamature. There were some very sharp bends and from what I saw not much room to take the long way around a corner.

I'm sure some of the hoses can be from the local auto parts store but with my luck those hoses will be fine. It will be the ones I have to wait three weeks for that will be the bad ones. I was just hoping that someone had some incite on the ones that are more likely to be needed. I hate to order the complete set. I would rather get a new bike. Hey, not a bad idea!

 

[N5HQ]

imported post

I had an appointment today for a diagnosis with a Honda dealer. The mechanic didn’t have the manual for the 1989 so he was working from a 1988 manual. He admittedly was a GL1800 mechanic but he had resources. He tore it down to the carbs and couldn’t find anything wrong. One vacuum line was a little soft in a bend but wasn’t bad. He just cut about a half an inch off and it was fine. The vacuum slides were in perfect condition. He just couldn't find anything mechanical wrong.

He thinks it is electrical but the controls and connectors are under the carbs so he didn’t go any further. He spent over three hours and only charged me for one. He ordered a 1989 manual and will confer with senior techs before I bring it back for more troubleshooting.

I did notice another symptom on the way home. I can’t even begin to understand how this is possible but if I hold the clutch and shift from second to third the RPM’s will increase about 1K RPM and when I shift back to second the RPM’s will fall to idle. I had no idea that there were sensors to detect gears other than neutral.

He told me that he had a few other 1500’s that were acting the same and he wanted to figure it out since he thinks it may be a common problem. He stated that he will spend some of his own time researching. I will be taking the bike back later and leaving it so that he can tear it down, remove the carbs and figure this thing out.

N5HQ