1989-89 honda gl 1500 carb fix


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cuyler2
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1989-89 honda gl 1500 carb fix

Postby cuyler2 » Mon Dec 01, 2014 3:12 pm



i findly resolved my 88 goldwing carb issue by adding more gas to them. about a gallon and a half , lit a match and voila! no problem!
not really. just a pipe dream. i did make an adapter to add the 34 pict 3 vw carb on it and it runs fine. no radio and homemade cover
gets around 36mpg, goes a hundred mph. still want my radio back on it sooooo.
HOW IS THIS REPAIRED,REPLACED,CORRECTED the best so i can walk out ,crank up and go?
i've read studied and feel like i can diagnose and repair any carb in the world except these. suggestions?help



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virgilmobile
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Re: 1989-89 honda gl 1500 carb fix

Postby virgilmobile » Mon Dec 01, 2014 3:21 pm

So you still have a 88 carb setup that doesn't work well??
Mine idles perfect and pulls to red line in every gear(till I max the speed limit + 10)
What's the problem?

k1w1t1m
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Re: 1989-89 honda gl 1500 carb fix

Postby k1w1t1m » Mon Dec 01, 2014 3:53 pm

Not sure what your actual problem is?

cuyler2
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Re: 1989-89 honda gl 1500 carb fix

Postby cuyler2 » Mon Dec 01, 2014 3:57 pm

thanks for the reply virgilmobile. i've read and attempted everything except buying, rebuilding 95somethingcarbs and converting to the anti-smog kit. is this the way to go? or has another avenue opened up? i'm pleading so don't get me wrong, i'm nice to any and everyone. it's an 89 thats' been traded in every 2 or 3 years until with 48,000 showing it landed on me some 5 years ago. i've 2 1100's ,a 1200 and the 1500 now with over 100,000 on on all of them . still a bog in it. i can tear'em down, rebuild them correctly and ride'em silly but this carb issue has got to go. please help!

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virgilmobile
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Re: 1989-89 honda gl 1500 carb fix

Postby virgilmobile » Mon Dec 01, 2014 4:26 pm

If you carb is a 88/89 model,there was a factory recall for this problem.Unfortunatly it was never done on mine.I had to resort to modification methods.
Can you describe under what condition the "bog" occures.eg just above a idle when taking off in first...at the 1200 rpm range or some other ?
Remember,these are a constant velocity carb,each "range" can be tweaked a bit to correct fuel mixture.
Some things I've done on mine...
Improved the fuel accelerator delivery timing.
Increased the opening of the slide in the throat by 3.5mm
Increased the slow speed jet a touch.
Readjust the slow speed jets.
Synced the carbs.
Replaced every vacuum line showing deterioration .

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ct1500
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Re: 1989-89 honda gl 1500 carb fix

Postby ct1500 » Mon Dec 01, 2014 6:06 pm

So you have a VW carb on this machine?????
This is what I do
Local and need repair help with your 1500, Valkyrie or ST please PM

cuyler2
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Re: 1989-89 honda gl 1500 carb fix

Postby cuyler2 » Tue Dec 02, 2014 8:50 am

yes a vw carb,works on all 1100's up to i know the 1500. and mr virgil i have religiously followed every path you have instructed and a lot of improvement. only seems to work for a while. i was going to write a large column yet i refrain.i still have the bog with factory carbs and have it pinpointed to them. i just have never actually read a "fix" other than the smog removal kit that i might try next. and i 'm not attempting as my wife just said"trying to get my 5 posts' in to win the monthly contest", i'm shutting business down until the first of the year and i'll have time to open it back up without distractions.

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virgilmobile
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Re: 1989-89 honda gl 1500 carb fix

Postby virgilmobile » Tue Dec 02, 2014 12:34 pm

Question...did you mention that "it lasts for a while"?
Does that mean that at some point,after your "service",the bike preformed OK then got bad again.??
Could something you fixed(that fixed the problem) failed again?
I have had major issues with the accelerator pump,check valves and "0" rings.
It seemed to work for a while then fail again.
The accelerator pump was an important part of my "off idle" hesitation.
That and lifting the slides a bit for a touch more air above a idle to match the fuel.
Mine was just "lean".
You can verify by adding a bit of "choke" to see if the bog gets better.
If it does,you need more fuel/air at that moment.
If it's worse,you need less.i did have to lower my float level 2mm for a "bog" in the 1500-2500 rpm range.
The stock pump sucks.Untill I modified mine,the "squirt" was really a hit and miss.
I suppose I may be dumping a bit more fuel when I twist my throttle than necessary but I certainly don't have any bog anymore.
I still get 32 in town and 38 two up interstate.
If I was looking for better mileage I'd get a Vespa.

cuyler2
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Re: 1989-89 honda gl 1500 carb fix

Postby cuyler2 » Wed Dec 03, 2014 12:04 pm

choke trick,yes and sometimes no,thanks again virgil . what happens is the way i ride. i run in a group riding veterans' funeral processions and the speeds are 10-25mph and it acts up according to temp , rain and somedays just fine ,next not . now if i just go on down the road it's fine after i get past 2nd pushing on,had just been living with it. just would like to know before i pull it apart again and attempt to run the stock/modified ones or will 95/96's cure the stumble for sure? could this bike be a european model that has a different ecu on it or something?

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virgilmobile
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Re: 1989-89 honda gl 1500 carb fix

Postby virgilmobile » Wed Dec 03, 2014 1:44 pm

I'm just think out loud .
There's a ambient air sensor.I don't remember much about it other than it does have a bit of effect on how it runs.More research needed.
I've heard of the 1800's having to mod or bypass them.

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Re: 1989-89 honda gl 1500 carb fix

Postby WingAdmin » Wed Dec 03, 2014 2:49 pm

virgilmobile wrote:I'm just think out loud .
There's a ambient air sensor.I don't remember much about it other than it does have a bit of effect on how it runs.More research needed.
I've heard of the 1800's having to mod or bypass them.


It's mounted on the front right part of the air filter housing. Some people disconnect it (green connector) and claim it helps off off-idle hesitation and stumble:

Air filter sensor (disconnected)
Air filter sensor (disconnected)

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virgilmobile
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Re: 1989-89 honda gl 1500 carb fix

Postby virgilmobile » Wed Dec 03, 2014 3:16 pm

I've heard the same.it may be possible that it's not reacting correctly and is pushing the timing off a bit at the wrong time.
Perhaps a test of leaving it disconnected.
Going from memory again,its a temperature sensor.When its cool,its resistance "tells" the ECM to run the ignition timing different than when its hot.
What that resistance is may be referenced in a manual.
You could determine when it ran the best,determine what the resistance should be and substitute a fixed resistor in its place to force the ECM to operate at those parameters.
Random thoughts.

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Re: 1989-89 honda gl 1500 carb fix

Postby WingAdmin » Wed Dec 03, 2014 3:30 pm

I didn't notice all that much difference in the way my bike ran when it was disconnected (it was disconnected when I got the bike). I plugged it in, the only thing that changed is that I gained a few MPG.

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virgilmobile
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Re: 1989-89 honda gl 1500 carb fix

Postby virgilmobile » Wed Dec 03, 2014 5:06 pm

I think its just one of those automatic fine tuning things the bike does as air changes.Minor adjustments to the timing.On a bike with no problems,the change is minor.Perhaps on the 88 with "bogging"issues,this may help.Especially sense it's indicated that the problem is temp/weather related.
I'm guessing now.does it show?

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Fatwing Chris
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Re: 1989-89 honda gl 1500 carb fix

Postby Fatwing Chris » Wed Dec 03, 2014 5:46 pm

There must be a cure for it because if my 89 had it,it was so slight that I really didn't notice it.I bought it with 90 k klm's and sold it last year with 172 k klm's.Never touched the carbs in all those miles,not even a sync.
If I'da known it would last this long,I'da taken better care of it.
Chris
Double Dark
Darkside # 1602

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ct1500
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Re: 1989-89 honda gl 1500 carb fix

Postby ct1500 » Wed Dec 03, 2014 7:57 pm

Fatwing Chris wrote:There must be a cure for it because if my 89 had it,it was so slight that I really didn't notice it.I bought it with 90 k klm's and sold it last year with 172 k klm's.Never touched the carbs in all those miles,not even a sync.


+1

With Chris on this as I have no knowledge of 89 as a problem year for carbs. Certain 1988 models had a campaign fix for an off-idle hesitation.

And to the OP why 95 and up carbs for replacement? From my experience there was nothing wrong with 90-94 carbs either or am I mistaken?
This is what I do
Local and need repair help with your 1500, Valkyrie or ST please PM

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Snowmoer
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Re: 1989-89 honda gl 1500 carb fix

Postby Snowmoer » Mon Dec 08, 2014 2:59 pm

88/89's had the carb recall. Honda changed the low speed jet from 50-55 and replaced the computer. The original owner of my 88 did not get this done and the parts are long gone. I could not find a 55 low speed jet, so went with a 60. That solved the problem with the low speed hesitation. There is just a tiny bit now, but nothing that is that big of a deal.

From the photo that the Wing Admin posted. My 88 does not have that connection. Honda must have put that sensor on later year bikes.

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ct1500
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Re: 1989-89 honda gl 1500 carb fix

Postby ct1500 » Mon Dec 08, 2014 8:17 pm

Snowmoer wrote:88/89's had the carb recall. Honda changed the low speed jet from 50-55 and replaced the computer. The original owner of my 88 did not get this done and the parts are long gone. I could not find a 55 low speed jet, so went with a 60. That solved the problem with the low speed hesitation. There is just a tiny bit now, but nothing that is that big of a deal.


By the 89 model year Honda had fixed the low speed hesitation that some 88's had. This was not a recall. It was addressed via TSB. There is only one TSB that I know of and does not include the 89 model year and is titled TSB #2.

Snowmoer wrote:From the photo that the Wing Admin posted. My 88 does not have that connection. Honda must have put that sensor on later year bikes.


Your 88 has a Ta sensor. Just in a different location. 88-89 years had some significant differences from later years.
This is what I do
Local and need repair help with your 1500, Valkyrie or ST please PM

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Snowmoer
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Re: 1989-89 honda gl 1500 carb fix

Postby Snowmoer » Tue Dec 09, 2014 3:06 pm

Thanks for the info. I thought it was a recall with them replacing parts. From the paperwork I found, I was sure it listed the 89's also. That is why Honda made some changes to the carbs in 90.

Was also just pointing out that the sensor was not in that location on the 88. Did not want the OP going nuts looking for it in that spot!




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