2008 GL1800 surge issue" cold or warm"


Information and questions on GL1800 Goldwings (2001-2017)
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redwing50
Posts: 1
Joined: Tue Aug 28, 2018 2:05 pm
Location: Halifax, Nova Scotia, Canada
Motorcycle: "2008 GL1800 Goldwing"

2008 GL1800 surge issue" cold or warm"

Post by redwing50 » Tue Aug 28, 2018 3:03 pm



Hi,
First of all I'm so glad I just joined this sight.
I hope someone may have some insight to my problem
because Honda doesn't seem to know.
Just a little history about myself and the bike.
I live in Nova Scotia, Canada. I bought this bike in late
Sept. 2016 it only had 8200 miles on it (US Bike).It now has 15000 miles
not even broke in yet. I bought it from a older man in New Brunswick
that could not ride it anymore for med. reasons.
My bike always seemed to have a stumble in it starting off but I
got somewhat ok with it. About 2 months ago I put some injector cleaner
in it along with the rest of the things lawn mower ect. The bike idles perfect
but!!!! if I turn the throttle slowly to 1000 rpm it starts to run a little rough
and when I turn it up to 1500 rpm this is where it surges. If I hold my throttle
steady it will continue for ever up to 1500 back down to 1000. This may have
been acting this way from new and even the other owner may not known.It
is very dangerous in slow speed turns because you don't know if the bike is going to
stumble or not. I almost dropped it a few timed because of this. I had a few people
look at it here but know one know how to fix it. I talked to someone at Guhl Motors
that does remapping on the ECU he believes that may be the problems. Any thoughts
Thanks,
redwing50



DaveO430
Posts: 1056
Joined: Fri Jan 02, 2015 7:28 pm
Location: Amity. Ar
Motorcycle: 2010 GL1800
2004 Suzuki DR200

Re: 2008 GL1800 surge issue" cold or warm"

Post by DaveO430 » Tue Aug 28, 2018 5:10 pm

I think it may be misadjustment of the throttle position sensor. Not an easy job. Of course Guhl would want to remap your ECU, they make a killing doing it and probably won't guarantee it will fix it.

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bstig60
Posts: 1040
Joined: Sat Jun 29, 2013 9:14 pm
Location: Sharpes, FL.
Motorcycle: 2003 GL1800
2007 ST1300
1999 Virago XV1100LC
Luggage Trailer, 2014 Home Made
1987 Honda TLR 200
Contact:

Re: 2008 GL1800 surge issue" cold or warm"

Post by bstig60 » Wed Aug 29, 2018 8:26 am

Might be a vacuum leak. I had a similar problem on my 88 1500. Turned out to be a cracked vacuum line.
Bill

User avatar
AZgl1800
Posts: 1386
Joined: Thu Oct 30, 2008 2:46 pm
Location: Lake Oologah Indian Territory USA
Motorcycle: '02 GL1800

Re: 2008 GL1800 surge issue" cold or warm"

Post by AZgl1800 » Wed Aug 29, 2018 2:21 pm

From my perspective, that is "normal".

here is my reasoning why.

at idle, hands off, all is okay.

but touch that throttle just a smidge, like while setting at the Red Light, you "think you have backed off the throttle" but you actually are pushing it forward ever so little.

my 2002 does exactly what you describe.
So, try this. Take your hand off the throttle and leave it alone.
I am will to bet that surging you talk about disappears.

or, if you really need to feel the throttle, run it up to 1200 rpm, and it will be just fine.

the reason is lack of airflow to allow the ECM to measure how much fuel/lack of fuel meters out with the incoming airflow. so, it hunts back and forth trying to 'balance it out'.
~John

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mrbreeze
Posts: 10
Joined: Sun Oct 01, 2017 8:32 am
Location: Columbia TN
Motorcycle: 2012 Honda GL1800 Goldwing

Re: 2008 GL1800 surge issue" cold or warm"

Post by mrbreeze » Tue Sep 11, 2018 3:29 pm

My 2012 model does the same thing, and it seems to be getting worse. It is particularly noticeable when the bike is cool/cold. Once it warms up really well, it's fine. I have NOT used any fuel injector cleaner or any other fuel additive. I mostly run E10 87 octane. I will fill up with E0 when I can get it, but haven't in a while.

It stumbles just off idle, and I have to compensate with the clutch and the throttle. If I am not REAL careful, it will surge like it's been hit from behind. It can be quite disconcerting. I am supposed to drop it off at my mechanic's place in late September, so I will ask him to look at it and see what he thinks.

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bstig60
Posts: 1040
Joined: Sat Jun 29, 2013 9:14 pm
Location: Sharpes, FL.
Motorcycle: 2003 GL1800
2007 ST1300
1999 Virago XV1100LC
Luggage Trailer, 2014 Home Made
1987 Honda TLR 200
Contact:

Re: 2008 GL1800 surge issue" cold or warm"

Post by bstig60 » Tue Sep 11, 2018 7:43 pm

Suspect a broken or cracked vacuum line or the idle speed set wrong.....
Bill

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Asphaltmaniac
Posts: 124
Joined: Wed Oct 11, 2017 11:57 am
Location: Sparks Nevada
Motorcycle: 2006 1800 bought new out of the box...Now has 196K Love this bike!!!!!

Re: 2008 GL1800 surge issue" cold or warm"

Post by Asphaltmaniac » Sun Oct 07, 2018 10:01 am

mrbreeze wrote:
Tue Sep 11, 2018 3:29 pm
My 2012 model does the same thing, and it seems to be getting worse. It is particularly noticeable when the bike is cool/cold. Once it warms up really well, it's fine. I have NOT used any fuel injector cleaner or any other fuel additive. I mostly run E10 87 octane. I will fill up with E0 when I can get it, but haven't in a while.

It stumbles just off idle, and I have to compensate with the clutch and the throttle. If I am not REAL careful, it will surge like it's been hit from behind. It can be quite disconcerting. I am supposed to drop it off at my mechanic's place in late September, so I will ask him to look at it and see what he thinks.
I dont think our wings were designed for anything but regular unleaded. That extra ethanol will do things to rubber parts you may not want it too..Just sayin.

User avatar
Asphaltmaniac
Posts: 124
Joined: Wed Oct 11, 2017 11:57 am
Location: Sparks Nevada
Motorcycle: 2006 1800 bought new out of the box...Now has 196K Love this bike!!!!!

Re: 2008 GL1800 surge issue" cold or warm"

Post by Asphaltmaniac » Sun Oct 07, 2018 10:06 am

redwing50 wrote:
Tue Aug 28, 2018 3:03 pm
Hi,
First of all I'm so glad I just joined this sight.
I hope someone may have some insight to my problem
because Honda doesn't seem to know.
Just a little history about myself and the bike.
I live in Nova Scotia, Canada. I bought this bike in late
Sept. 2016 it only had 8200 miles on it (US Bike).It now has 15000 miles
not even broke in yet. I bought it from a older man in New Brunswick
that could not ride it anymore for med. reasons.
My bike always seemed to have a stumble in it starting off but I
got somewhat ok with it. About 2 months ago I put some injector cleaner
in it along with the rest of the things lawn mower ect. The bike idles perfect
but!!!! if I turn the throttle slowly to 1000 rpm it starts to run a little rough
and when I turn it up to 1500 rpm this is where it surges. If I hold my throttle
steady it will continue for ever up to 1500 back down to 1000. This may have
been acting this way from new and even the other owner may not known.It
is very dangerous in slow speed turns because you don't know if the bike is going to
stumble or not. I almost dropped it a few timed because of this. I had a few people
look at it here but know one know how to fix it. I talked to someone at Guhl Motors
that does remapping on the ECU he believes that may be the problems. Any thoughts
Thanks,
redwing50
Never heard anybody getting a wing ECU re-mapped so I dont believe its possible. Your bike did sit for long periods without being exercised...I'm wondering if its a fuel regulator issue?

User avatar
bstig60
Posts: 1040
Joined: Sat Jun 29, 2013 9:14 pm
Location: Sharpes, FL.
Motorcycle: 2003 GL1800
2007 ST1300
1999 Virago XV1100LC
Luggage Trailer, 2014 Home Made
1987 Honda TLR 200
Contact:

Re: 2008 GL1800 surge issue" cold or warm"

Post by bstig60 » Sun Oct 07, 2018 10:34 am

Very possible a vacuum leak. Check your vacuum lines for cracks.
Bill

User avatar
Asphaltmaniac
Posts: 124
Joined: Wed Oct 11, 2017 11:57 am
Location: Sparks Nevada
Motorcycle: 2006 1800 bought new out of the box...Now has 196K Love this bike!!!!!

Re: 2008 GL1800 surge issue" cold or warm"

Post by Asphaltmaniac » Thu Oct 25, 2018 10:25 am

redwing50 wrote:
Tue Aug 28, 2018 3:03 pm
Hi,
First of all I'm so glad I just joined this sight.
I hope someone may have some insight to my problem
because Honda doesn't seem to know.
Just a little history about myself and the bike.
I live in Nova Scotia, Canada. I bought this bike in late
Sept. 2016 it only had 8200 miles on it (US Bike).It now has 15000 miles
not even broke in yet. I bought it from a older man in New Brunswick
that could not ride it anymore for med. reasons.
My bike always seemed to have a stumble in it starting off but I
got somewhat ok with it. About 2 months ago I put some injector cleaner
in it along with the rest of the things lawn mower ect. The bike idles perfect
but!!!! if I turn the throttle slowly to 1000 rpm it starts to run a little rough
and when I turn it up to 1500 rpm this is where it surges. If I hold my throttle
steady it will continue for ever up to 1500 back down to 1000. This may have
been acting this way from new and even the other owner may not known.It
is very dangerous in slow speed turns because you don't know if the bike is going to
stumble or not. I almost dropped it a few timed because of this. I had a few people
look at it here but know one know how to fix it. I talked to someone at Guhl Motors
that does remapping on the ECU he believes that may be the problems. Any thoughts
Thanks,
redwing50
Did you figure the stumble out? Have you checked your coils perhaps one is weak?

User avatar
DonP.
Posts: 17
Joined: Sun Apr 24, 2016 1:53 pm
Location: Florida
Motorcycle: 2015 Honda GoldWing audio/nav/abs

Re: 2008 GL1800 surge issue" cold or warm"

Post by DonP. » Sun Nov 11, 2018 9:22 am

My 2015 has done it since new so I don't think is an issue of poor fuel, pressure regulator or vacume leaks. Many posts on other forums on this issue too. They all seem to agree it's an ECU fueling issue coming just off idle.

I have never seen a post where someone has had the ECU worked on or installed a Power Commander or Bazzaz fuel controller that claims to fix this problem.
I guess we all just live with it.

Has anyone fixed it? And how?



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