1986 SEi ECU


Information and questions on GL1200 Goldwings (1984-1987)
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jkent
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Joined: Sun Aug 07, 2011 2:59 pm
Location: Louisburg, NC
Motorcycle: 1986 Aspencade SEi

1986 SEi ECU

Postby jkent » Tue Aug 09, 2011 9:15 pm



My ECU is dead - Fuel light stays on all the time, the button switches between oil pressure and fuel level works, but no display on the ECU. There was a red and red-white wire coming off the relay by the battery. The wires have been cut and replaced by some heavier wires that run to the front of the harness and connect in where the red and red white wires are cut. The guy I bought the bike from insists the ECU just stopped working the day before I purchased it. It obviously has been worked on. Everything else works fine, I had to replace tires and brakes, this bike only has 19k MILES AND RUNS LIKE A DREAM.
If I connect the red wire that has been cut directly to the battery the ECU come up and appears to work normally.

Any ideas what has been done here?

Also , my brake light does not work with the foot lever, it works fine on the handlebar, any ideas?


JKENT

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virgilmobile
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Re: 1986 SEi ECU

Postby virgilmobile » Wed Aug 10, 2011 8:38 am

Brake pedal has a switch attached to it,check it.
You have 2 options for repairs.
1.restore all wiring to original and then trace to the fault.OR if applying volts to a wire gets everything going,Hook a relay to the battery(fuse protected),Ignition or accessory switch it and let it apply power where needed.I can help with schematics.

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jkent
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Motorcycle: 1986 Aspencade SEi

Re: 1986 SEi ECU

Postby jkent » Fri Aug 19, 2011 6:19 am

I rewired everything to original last night and everything works as expected now, not sure why it was bypassed and still a bit worried I may face an issue down the road. thanks for the input !
JKENT

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virgilmobile
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82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: 1986 SEi ECU

Postby virgilmobile » Fri Aug 19, 2011 9:09 am

Electrical gremlins are difficult to find.At least do a little preventive modifications like hard wiring the 3 yellow wires from the stator.Trust me,the plug can look perfect and be burnt to a crisp inside.Clean the battery ground lug on the frame.Inspect the plug or hard wire the regulator wiring,and replace the Dog Bone fuse,these are just a problem area on a 25 year old electrical system.

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jkent
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Location: Louisburg, NC
Motorcycle: 1986 Aspencade SEi

Re: 1986 SEi ECU

Postby jkent » Fri Aug 19, 2011 12:31 pm

Stator was replaced and hardwiring has been done, dogbones have been replaces as well. The PO said he had it done as a recall by Honda.

I did notice my voltmeter is now running about 14.5 rather than the 13.8 or 9 I was seeing before.
Maybe all in my head but it also seems a low end flutter while putting along in first has smoothed out as well.....glad to have the clock and ETC working, and was really tired of looking at that glowing red FUEL light all the time.

Just got back from a short 50 mile hop, all is well so far.
THX AGAIN !
JKENT

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jkent
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Motorcycle: 1986 Aspencade SEi

Re: 1986 SEi ECU

Postby jkent » Sun Aug 21, 2011 1:13 pm

Ok, so now I am blowing the radio fuse, it is supposed to be a 10 amp, it had been replaced with a 15 AMP, it pops right away, every time now. I removed the radio and still has the same effect......going to clymer for some help, any ideas ?
this is also the volt meter fuse...so I have to get this working.
JKENT

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jkent
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Motorcycle: 1986 Aspencade SEi

Re: 1986 SEi ECU

Postby jkent » Sun Aug 21, 2011 3:50 pm

OK, found my problem, again it was non factory wiring causing the issue, chopped up wiring to to the front fender lights, a cig lighter had been spliced in, taped and twisted, no solder, bad connections, 1 side was grounding out....I rewired to factory, removed the cig lighter, now all is working as expected again.
JKENT

RexAubrey
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Motorcycle: 1983 GL1100I GoldWing Interstate (Black)
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1979 Yamaha XS650SF Special (Black)

Re: 1986 SEi ECU

Postby RexAubrey » Sun Aug 21, 2011 8:21 pm

Yea, You gotta love those Electrical geniuses that rewire things with out knowing what they are doing. Spaghetti wiring will catch up to you every time at the worse times. :D
Rex
1983 GoldWing Interstate, 1982 GoldWing Aspencade, 1981 Yamaha 550 Maxim, 1979 Yamaha 650 Special

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jkent
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Re: 1986 SEi ECU

Postby jkent » Sun Sep 04, 2011 7:16 am

Took a long ride yesterday ( 400+ miles) , now I am seeing black smoke during acceleration, seems to be a little down on power, has always idled a little rough at startup. Maybe a clogged injector, but it seems that would make it run lean, it seems to be rich. I can smell fuel when I stop at a light.


also the radio will not change channels...the good thing is its stuck on a really good local channel :)
JKENT

hunter27h
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Location: Woodbine, georgia
Motorcycle: 1 1985 Honda Goldwings ltd trike
1989 GL1500
1991 GL1500 SE

Re: 1986 SEi ECU

Postby hunter27h » Mon Sep 12, 2011 7:40 am

Sounds like it is now time for "seafoam" and wd40. Both seem to work wonders, seafoam for the black smoke and wd40 for the channel selector.

:D

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jkent
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Motorcycle: 1986 Aspencade SEi

Re: 1986 SEi ECU

Postby jkent » Mon Sep 12, 2011 8:29 pm

Well, things went from bad to worse very quiclky....I decided to change plugs, 3 slid right out , the 4th one was froze up, worked with for 2 days with pb blaster, broke 2 sockets , finally broke off the plug in the head, nothing left but the threads in the hole....so.. used an easy out , more pb blaster, heat ...lots of pecking and soaking....broke 2 more sockets on the easy out....finally wrung off the easy out in the hole.....totally disgusted that someone somewhere along the way did not put any anti-seize on the threads , ALWAYS USE ANTI SIEZE, no matter what anyone says ....I have pulled it down, removed the head, popped out the easy out from the bottom side, carried the head to my pals shop and cleaned it and inserted a Heli-core, I ordered the head gasket , should be in tomorrow, I also am replacing the timing belts while I have it apart.....A note on Timing belts..Honda wants 90 each..OUTREAGOUS!!!! I found the Gates belts at NAPA 250070 I believe. they only cost 10.20 each and are very good quality belts.
If all goes well I will have it back together tomorrow night.
Oh , I also noticed when I pulled the head that # 3 cylinder is running very lean, likely an injector clogged, I will pull and soak, try the sea foam...worst case replace. I am assuming that maybe the other 3 cylinders are running a bit rich compensating for the one running lean ????
any thoughts here are appreciated.

Also , I appreciate all who have posted their notes online, the Gates Belts was posted by a mechanic on another site...that is the best money saver I have seen so far when it comes to routine maintence.

total cost for this adventure so far ... 108 for head gasket , oil seals and plugs, 28 for plugs and belts. 20 for my pal at his shop for the heli-core.

could have been a lot worse.
JKENT

hunter27h
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Motorcycle: 1 1985 Honda Goldwings ltd trike
1989 GL1500
1991 GL1500 SE

Re: 1986 SEi ECU

Postby hunter27h » Tue Sep 13, 2011 6:58 am

http://www.cyclecentralpowersports.com/ ... JPMQ5508R0.


I have these guys to be a great source of oem parts, at a better price than any place else I have checked, average time to get parts seems to be about 8 days though, and availability for the older bikes seems to be pretty good. I also use the NAPA belts. Good luck on your repairs! 8-)

Ben

franky9322
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Motorcycle: 1984 GL1200 INTERSTATE

Re: 1986 SEi ECU

Postby franky9322 » Tue Oct 23, 2012 1:04 am

virgilmobile wrote:Electrical gremlins are difficult to find.At least do a little preventive modifications like hard wiring the 3 yellow wires from the stator.Trust me,the plug can look perfect and be burnt to a crisp inside.Clean the battery ground lug on the frame.Inspect the plug or hard wire the regulator wiring,and replace the Dog Bone fuse,these are just a problem area on a 25 year old electrical system.



where is.... and how .....and with what....to replace the Dog Bone fuse


THANKS

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WingAdmin
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Re: 1986 SEi ECU

Postby WingAdmin » Wed Oct 24, 2012 9:18 am

franky9322 wrote:where is.... and how .....and with what....to replace the Dog Bone fuse

THANKS


That fuse is on the right side in front of the battery, under a red plastic cover. It can be replaced with a 30 amp blade fuse holder. Radio Shack has a decent one, see here: viewtopic.php?f=16&t=14266

franky9322
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Re: 1986 SEi ECU

Postby franky9322 » Wed Oct 24, 2012 10:43 am

WingAdmin wrote:
franky9322 wrote:where is.... and how .....and with what....to replace the Dog Bone fuse

THANKS


That fuse is on the right side in front of the battery, under a red plastic cover. It can be replaced with a 30 amp blade fuse holder. Radio Shack has a decent one, see here: viewtopic.php?f=16&t=14266


:D THANKS




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