Hot weather vs cold weather


Information and questions on GL1500 Goldwings (1988-2000)
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Charlie1Horse
Posts: 567
Joined: Mon Sep 16, 2013 9:35 pm
Location: Jacksonville, Florida
Motorcycle: 1986 GL1200A Aspencade
1992 GL1500I Interstate

Hot weather vs cold weather

Post by Charlie1Horse »



When it's hot (summer) my 92 GL1500 Interstate will run rough when accelerating from about 1200 to 1500+ rpm like when coming out of a turn from a corner. But when it gets cold, below 50 degrees for our 3.5 days of winter, it runs very well and smooth at that acceleration. Is there a sensor that monitors the ambient temperature when it gets hot weather to keep it from running badly?
Thanks, Russell

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C-dub
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Re: Hot weather vs cold weather

Post by C-dub »

I'm not the most knowledgeable person for this topic, but here's what little I do know.

The 1500 is carburated, right? I think this means it is affected by temperature more than the fuel injected models like my 1800. For combustion engines in general, when it is cold they make more horsepower. I can't articulate why, but remember that for whatever reason they do. So, when the temperature is hot they make less and 1200-1500 rpm is a little on the low side for a Wing. Although, it is something of a torque monster, for a bike this heavy I don't expect much pull at those lower rpms in any temperature. However, it will pull better in the cold just because of that horsepower thing.

One of the experts will be along shortly. Hopefully!
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Rambozo
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Motorcycle: 1992 GL1500 Aspencade

Re: Hot weather vs cold weather

Post by Rambozo »

There is an intake air temp sensor and a coolant temp sensor for the ECM. (At least in 1994) I do not know what the software does with that info as to engine management settings.

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DenverWinger
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Re: Hot weather vs cold weather

Post by DenverWinger »

Cold air is more dense. Like going down in altitude.

In certain places on very hot days some models of helicopters can't fly. It's like reaching their altitude limit.
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ct1500
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Re: Hot weather vs cold weather

Post by ct1500 »

Charlie1Horse wrote:
Fri Nov 15, 2019 11:39 pm
When it's hot (summer) my 92 GL1500 Interstate will run rough when accelerating from about 1200 to 1500+ rpm like when coming out of a turn from a corner. But when it gets cold, below 50 degrees for our 3.5 days of winter, it runs very well and smooth at that acceleration. Is there a sensor that monitors the ambient temperature when it gets hot weather to keep it from running badly?
Thanks, Russell
The usual problem with a 1500 is lean running and the symptoms would be compounded in cooler weather, yours is doing the opposite. Coming out of a corner with leaning involved when the problem appears with yours? Nothing on the MC would know or be affected by a leaned over condition except maybe fuel level in the bowls. If fuel level is a little high in hot weather it could richen the mixture enough to stumble it, then in cooler weather when an engine could use a little more it sucks it up running good. Is your engine mat in place? Check that the hot air door in air cleaner snorkel is open in hot weather which allows outside air into engine. With engine hot at idle after a good run, stand MC straight up then let it drop by itself having the kickstand break the fall, any RPM change/stumble?
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AZgl1800
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Re: Hot weather vs cold weather

Post by AZgl1800 »

In Phoenix, Arizona, the commercial air traffic is shut down at 127*F on the tarmac.

the Density Altitude is so high, the airlines cannot clear the mountains on take off going east, and going west they can't get above the metro area above minimum FAA rules for ground clearance....

If they had any kind of minor power issue, they would crash into the high rise buildings in downtown Phoenix.


~John

'02 GL1800
2009 Piaggio MP3 250cc

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