86 SEI Running rough suddenly - Page 5 - Steve Saunders Goldwing Forums

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Old 05-05-2019, 03:50 PM
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Location: Olympia, Washington, USA
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The throttle switch doesn't have a code for "out of range". It's simply open or shorted. Setting the throttle switch voltage lower does indeed change the injector duration throughout the entire band. Lean isn't necessarily good. Especially with today's fuels. Sometimes it's like flushing two toilets, when you only use one........... I've never been a big fan of trying to cheat the system. If you have 1400-1600 rpm cold and it settles to the correct rpm warm, there's nothing wrong with your aux air regulator. The only way I know to get 3-4 more miles per gallon, rests with your right hand.

Libraries are full of stuff I don\'t know.
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Old 05-20-2019, 11:47 AM Thread Starter
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Location: Houston
Year: 1986
Make: Honda
Model: GL1200 SEi
Posts: 118
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I guess running all those cleaners through the fuel system isn’t a good idea since my fuel shutoff valve is leaking now and I can’t find one. Anyone wanna buy a bike?

I’ll be removing the TPS and disassembling it to clean and test. Then put it back together for testing.

I was gone on vacation for a bit and came back to a mess on my driveway... (see attachment)
Attached Images
File Type: jpg 01EBF0EF-E306-4A3E-8D6C-AC5C5957341E_1558370799719.jpg (67.3 KB, 13 views)

I got rid of my alluminum wings and picked up a Goldwing. Here to live once, die once and give Glory to God while doing it.

Budd

87 GL1200A
83 Kawi 750K (Twin)
78 Yami XS750 Special (Triple Special)
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Old 05-20-2019, 02:25 PM Thread Starter
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Location: Houston
Year: 1986
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Model: GL1200 SEi
Posts: 118
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Now to find a good rebuild kit...
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File Type: jpg image_1558380276930.jpg (55.3 KB, 8 views)

I got rid of my alluminum wings and picked up a Goldwing. Here to live once, die once and give Glory to God while doing it.

Budd

87 GL1200A
83 Kawi 750K (Twin)
78 Yami XS750 Special (Triple Special)
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Old 05-20-2019, 05:25 PM Thread Starter
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Location: Houston
Year: 1986
Make: Honda
Model: GL1200 SEi
Posts: 118
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TPS removed. Now to either fix it or buy one that will work... it doesn’t feel totally smooth especially near idle.

I was able to remove the old one with a special tool purchased from The Home Depot. See attachments...
Attached Images
File Type: jpg image_1558391065923.jpg (88.6 KB, 10 views)
File Type: jpg 82C1C5DD-530C-45FD-AAF1-E54CB15DA10E_1558391264475.jpg (92.8 KB, 9 views)
File Type: jpg 297447F2-92B7-4BF0-A2E6-F96AD224D727_1558391280461.jpg (96.2 KB, 10 views)
File Type: jpg image_1558391346488.jpg (87.0 KB, 11 views)

I got rid of my alluminum wings and picked up a Goldwing. Here to live once, die once and give Glory to God while doing it.

Budd

87 GL1200A
83 Kawi 750K (Twin)
78 Yami XS750 Special (Triple Special)
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Old 05-21-2019, 09:53 AM
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Location: Victoria BC Canada
Model: 1985 GL1200 Limited Edition and 1995 GL1500 SE CDN Edition
Posts: 546
The OEM TPS cannot be repaired - sealed unit. Aftermarket TPS units that will work are on eBay - check for Honda TPS units, inexpensive and work. Buy a couple of them in case one is faulty - the QA on these units is not the best. See my post #36.

The aftermarket TPS unit case will need to be trimmed to fit where the TPS is installed. See attachment.

When you reinstall the TPS keep at the lower limit of the calibration and it will operate well. You have to calibrate with the ignition on. When you do this rotate the TPS until the ECU provides an error code. You can do this for too low a voltage reading and too high. TPS calibration has to be out quite a bit for this to happen.

For the fuel shut off VV. Mine leaked as well. Drilled out the rivets, inverted the internal 4 hole diaphragm, and went to the local hydraulic shop for a new o-ring. Put back together with small bolts and it has been working fine for 3 years. Here are some attachments showing what I did.

Good luck.
Attached Images
File Type: jpg Fuel Shut Off Valve Disassembled.jpg (60.5 KB, 7 views)
File Type: jpg Fuel VV Inner Diaphragm.jpg (134.6 KB, 7 views)
File Type: jpg Fuel VV Rebuilt and Put together - 2.jpg (59.3 KB, 7 views)
File Type: jpg TPS Base Mod and Screw Hole.jpg (60.2 KB, 7 views)
File Type: jpg TPS Arm Mod.jpg (50.1 KB, 7 views)

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