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Old 11-27-2010, 09:41 PM   #1 (permalink)
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Hi,

I'm a new member and I have a serious problem, or at least for me it is. I have a 2005 Goldwing Trike, 33,124 miles, that I was getting 42/44 mpg highway riding @ 67 mph. Last Aug my mileage dropped to 33/35, same riding conditions. Since that time I've been buying fuel at the same station, NO alcohol. I've changed air filters, changed plugs (gapped correct) used sea-foam, used injector cleaner, checked tire pressure, no winter additives added to fuel. In short, I've checked all the obvious things throughly. I noticed the drop right away because I was getting 42/44, the next tank it had dropped to 28 mpg. After doing all the above, my mileage increased to 35 mpg at best. That doesn't leave any room for playing with my Trike and having fun with it. We travel a lot during the spring, summer and fall months and this really bites into cheap traveling mileage. Everything looks good and the Wing runs good, but you can't play with the throttle. Some people say the Wing doesn't get good mileage, but the member of our club are all getting 42/48 with their Trikes. Now I'm looking at putting the Wing in a shop this winter to see if my mechanic can't find the problem, but I feel like I'm missing something. Like I've said, I've checked ALL the obvious things. Has anyone else had this problem?
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Old 11-27-2010, 09:54 PM   #2 (permalink)
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If you disconnected the battery for a while, you need to reset the ECU. To do that, start the bike up but don't touch the throttle. Let the bike fully warm up and the fans come on. Wait about 2 minutes more AFTER the fans come on, then you can shut it off.

That should do it.
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Old 11-27-2010, 10:01 PM   #3 (permalink)
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That's what I'd do first. Clear the ECU, ride it awhile and then check for fault codes to give a hint on what's going on.
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Old 11-27-2010, 10:51 PM   #4 (permalink)
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Welcome to the forum icu2. Let us know if resettting ecu works out.

Just a thought for you to check, are the brakes dragging on any of the wheels, jack each wheel up off the ground and spin in both dirrections, listen for dragging/grinding, check before and after hitting apppropiate lever/pedal for that wheel. Drag will also cut down your miliage. Hope it helps.
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Old 11-27-2010, 11:16 PM   #5 (permalink)
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Wing-Rider wrote:
Quote:
If you disconnected the battery for a while, you need to reset the ECU. To do that, start the bike up but don't touch the throttle. Let the bike fully warm up and the fans come on. Wait about 2 minutes more AFTER the fans come on, then you can shut it off.

That should do it.
Will this work the same on a 1500?
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Old 11-27-2010, 11:26 PM   #6 (permalink)
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No ecu on the 1500, sorry dude. Just gotta keep er under 3000 rpm. Or else you are just opening the fuel dump valve. Happens to me every time I turn the switch on.
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Old 12-01-2010, 09:14 AM   #7 (permalink)
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icu2 wrote:
Quote:
Hi,

I'm a new member and I have a serious problem, or at least for me it is. I have a 2005 Goldwing Trike, 33,124 miles, that I was getting 42/44 mpg highway riding @ 67 mph. Last Aug my mileage dropped to 33/35, same riding conditions. Since that time I've been buying fuel at the same station, NO alcohol. I've changed air filters, changed plugs (gapped correct) used sea-foam, used injector cleaner, checked tire pressure, no winter additives added to fuel. In short, I've checked all the obvious things throughly. I noticed the drop right away because I was getting 42/44, the next tank it had dropped to 28 mpg. After doing all the above, my mileage increased to 35 mpg at best. That doesn't leave any room for playing with my Trike and having fun with it. We travel a lot during the spring, summer and fall months and this really bites into cheap traveling mileage. Everything looks good and the Wing runs good, but you can't play with the throttle. Some people say the Wing doesn't get good mileage, but the member of our club are all getting 42/48 with their Trikes. Now I'm looking at putting the Wing in a shop this winter to see if my mechanic can't find the problem, but I feel like I'm missing something. Like I've said, I've checked ALL the obvious things. Has anyone else had this problem?
Well, how 'bout it? Get your problem solved?
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Old 12-01-2010, 10:08 PM   #8 (permalink)
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Every 1500 I have owned gets the same exact fuel mileage.

33.5 mpg all day long, on just about every tank of fuel. Maybe I should recalibrate the tachometer and move the 3,000 RPM point clockwise about 90 degrees.
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Old 12-05-2010, 03:22 PM   #9 (permalink)
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Sorry I haven't answered anyone sooner, but my computer blew up and it is deer season. I'm home today so I'm cranking up the wing today and I will do as you say. Tomorrow I'll ride on a full tank and will see what the mileage says. Sure hope this works because if it doesn't, I'll have to put it in the "bike hospital" while it's too cold to ride because this spring we'll going across country again. Sometimes, when something goes a little wrong it's a sign something big is about to go wrong. I'll keep you informed of my findings. Thanks for the information.

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Old 12-09-2010, 09:28 PM   #10 (permalink)
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Ok, today was the first day I've had a chance to ride. This morning I cranked the Wing not using the throttle and let it idle until the fans came on, and let it idle for two or three minutes more before shutting down. Then I filled up with GAS and rode, 55/65 mph, until I was so cold my body was numb! Then I filled up again at the game station and checked my mileage. 35.8 mpg!! I was easy on the throttle and most of the riding was highway riding, about 95%. Did I not reset the ECM correct? I was hoping this would correct my problem, but it didn't. I know that gas mileage decreases as it get colder, but gas also contracts with cooler weather. If anyone has anymore ideals, please feel free to let me know. Like I said before, I've already tried all the obvious things.

Thanks in abvance.
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