1985 Limited


Information and questions on GL1200 Goldwings (1984-1987)
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Jgs1985
Posts: 4
Joined: Sat Aug 11, 2018 9:21 pm
Location: Mosheim TN
Motorcycle: 1985 GoldWing Limited

1985 Limited

Post by Jgs1985 »



Fuel injected bike. Runs rich and idles about 14-1,600 rpm’s any ideas? I have been reading about the pb sensors but heck I don’t know where they are located in all the wires that disappear into the other wires that disappear.


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Rednaxs60
Posts: 2616
Joined: Wed Nov 18, 2015 12:44 pm
Location: Victoria, British Columbia, Canada
Motorcycle: 1985 GL1200 LTD
2014 Can-Am Spyder RT LE
1995 GL1500 SE CDN Edition (sold)
2012 Suzuki DL1000 VStrom (sold)
2008 GL1800 (sold)
Ontario 1985 GL1200 LTD (sold)

Re: 1985 Limited

Post by Rednaxs60 »

Jgs1985 wrote: Sun Dec 13, 2020 7:37 am Fuel injected bike. Runs rich and idles about 14-1,600 rpm’s any ideas? I have been reading about the pb sensors but heck I don’t know where they are located in all the wires that disappear into the other wires that disappear.
These FI models are sure fun. Hopefully you have the 3 manuals that are NECESSARY to do work and troubleshoot this bike: OEM service manual, Electrical troubleshooting manual and the Supplement. These answer a lot of questions.

Wouldn't look at the PB sensors. Drop the idle to 1000 RPM +/- 100. Use the adjustment screw in the rear middle of the air chamber, do not use the screw behind the right side CFI cover for RPM adjustment. The screw behind the CFI cover is to balance the right and left cylinders. You cannot balance the front/rear cylinders on a side because of the FI.

Check the throttle position sensor (TPS) calibration. It is probably the culprit when it comes to over fueling these engines.

All other sensors are in or out of spec.

Check for error codes on the ECU.

Good luck
"When you write the story of your life, don't let anyone else hold the pen"

Ernest
Jgs1985
Posts: 4
Joined: Sat Aug 11, 2018 9:21 pm
Location: Mosheim TN
Motorcycle: 1985 GoldWing Limited

Re: 1985 Limited

Post by Jgs1985 »

Thanks for the info. I have the OEM Manuel but not the other two you mentioned. Really have difficulty getting my mind around working on a 35 year old bike that is unique to one year mfg.
User avatar
Rednaxs60
Posts: 2616
Joined: Wed Nov 18, 2015 12:44 pm
Location: Victoria, British Columbia, Canada
Motorcycle: 1985 GL1200 LTD
2014 Can-Am Spyder RT LE
1995 GL1500 SE CDN Edition (sold)
2012 Suzuki DL1000 VStrom (sold)
2008 GL1800 (sold)
Ontario 1985 GL1200 LTD (sold)

Re: 1985 Limited

Post by Rednaxs60 »

Actually two years, the '86 SE-i (Special Edition Injected) was almost a carbon copy. The first foray into FI by Honda was the '82 500 Turbo, second was the '83 650 Turbo. The '83 FI system was different from the '82 as Honda learned from it. The FI system on the '85/'86 is different again mostly because of no turbo. Parts are not interchangeable, but there are some part alternatives that the '82/'83 fellows have come up with. These are very robust FI systems. The self diagnostic in the ECU was well ahead of its time. Honda discontinued the FI practice because of expense and the emissions regulations hadn't caught up with motorcycles. motorcycles always lag behind automobiles.

The 1500 was a whole different kettle of fish, in that the engine design mimicked FI system(s), and only came with carbs.

There are two fuel indicators on the dash. The FUEL SYSTEM is the equivalent to the check engine light in a car, has nothing to do with the fuel system. The other fuel light is for fuel level in the tank.

The weak point is the throttle position sensor, but there are alternatives.

People shy away from these FI models because of the intricacies of the FI system and the apparent lack of parts. I would submit that the carb models are just as much a PITA when it comes to working on. See lots of threads regarding carbs, and parts issues as well.

Once you understand the system(s), these FI bikes are a treat to ride. Once setup not a lot that can be done to modify the operation.

I like mine. Sending a PM. Good luck.
"When you write the story of your life, don't let anyone else hold the pen"

Ernest
Jgs1985
Posts: 4
Joined: Sat Aug 11, 2018 9:21 pm
Location: Mosheim TN
Motorcycle: 1985 GoldWing Limited

Re: 1985 Limited

Post by Jgs1985 »

Been away a while, will look into the tps. Thanks


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