Lost power


Information and questions on GL1200 Goldwings (1984-1987)
  • Sponsored Links
User avatar
valour1
Posts: 36
Joined: Sun Aug 07, 2011 3:00 pm
Location: Canada
Motorcycle: 1985 GL1200IF GoldWing Interstate

Lost power

Postby valour1 » Sun Aug 19, 2012 2:27 pm



Hi got my bike up and running this year put approx 6500k on it. I use the bike to commute back forth to work about 200k round trip bike been running good when about 20 minutes into ride started to loose power then would come back and finnaly died. Then would fire up again after sitting for approx 15 minutes get going again and start to loose power again finnaly got it back home after 1 hour trip turned into 3 hours.
Bike sat for couple days thought would be fuel issue so I replaced fuel pump and started up no problems went for ride after 1/2 hour bike died again stuck on highway pulled spark plug out to find there is no spark on either side.
Any suggestions would be greatly appreciated



User avatar
virgilmobile
Posts: 7649
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Lost power

Postby virgilmobile » Sun Aug 19, 2012 5:04 pm

I can't diagnose this problem currently as there are too many variables.You need to determine first if its fuel or spark related.
Remove the plug wire from one plug when it dies and put on a spare plug.Crank the engine and look if the spark has quit.
Then we can move to the next test on whichever part has quit.

User avatar
valour1
Posts: 36
Joined: Sun Aug 07, 2011 3:00 pm
Location: Canada
Motorcycle: 1985 GL1200IF GoldWing Interstate

Re: Lost power

Postby valour1 » Sun Aug 19, 2012 6:05 pm

Thanks for response I thought was fuel issue but it is not, I pulled out spark plug on one side laid it on engine to see if any spark when cranking over no spark did same on other side no spark.
When it first started the engine sputter and slowly loose power and just shut down. After waiting approx 15 mins would fire up and then start to act up again 10 mins down the road Then it was fine for few days and started to actup again now it won't start cranks over good all guages work just no spark checked all fuse they seem to be fine

User avatar
virgilmobile
Posts: 7649
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Lost power

Postby virgilmobile » Sun Aug 19, 2012 9:27 pm

I have a post about using a cheap meter from wall mart .this will help determine where the system is failing... http://www.goldwingdocs.com/forum/viewt ... =5&t=11800

User avatar
valour1
Posts: 36
Joined: Sun Aug 07, 2011 3:00 pm
Location: Canada
Motorcycle: 1985 GL1200IF GoldWing Interstate

Re: Lost power

Postby valour1 » Mon Aug 20, 2012 8:18 pm

What does 3 wire connector left of battery do I replaced replaced complete wire harness last year but never replaced connectors from bike found that that 3 prong connector coming out (think it transmission not sure but color 2 are yellow 1 black on harness side 3 yellow notice that 1 wire was shorting or over heated going to splice solder just curious what this is for this connection)

Thanks again
followed your instructions for meter I have one problem is bike just died and won't start can\t do your dignose

User avatar
virgilmobile
Posts: 7649
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Lost power

Postby virgilmobile » Mon Aug 20, 2012 8:49 pm

the 3 wire plug are usually the stator coils.They are tied directly to the regulator 3 yellow wires.
As far as the test,what voltage reading do you get?
No volts indicates a loss of power to the coils and/or ignition module.
A reading above 0.5 volts DC indicates a open pulse coil or wiring to it.
Normal reading without the engine running but with the key on is about 0.15 volts.

User avatar
valour1
Posts: 36
Joined: Sun Aug 07, 2011 3:00 pm
Location: Canada
Motorcycle: 1985 GL1200IF GoldWing Interstate

Re: Lost power

Postby valour1 » Tue Aug 21, 2012 8:04 pm

Well repaired soldered stator wires together tried to start bike it fired up but rough then died so removed false tank and started to check connectors went to start bike again while turning over wiggled connectors on left side found that when wiggeled 6 wire connector the bike fired up and is running smooth wiggled connector again bike died. Going to remove connector and hard wire sure glad not stator or pulse gens this bike only has 32500 khm on it lots miles left in it

Thanks Alot :arrow: Virgin mobile for your help greatly appreciated

User avatar
virgilmobile
Posts: 7649
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Lost power

Postby virgilmobile » Tue Aug 21, 2012 9:52 pm

Might at least look at the other plugs there too.there all prone to corrosion.

User avatar
valour1
Posts: 36
Joined: Sun Aug 07, 2011 3:00 pm
Location: Canada
Motorcycle: 1985 GL1200IF GoldWing Interstate

Re: Lost power

Postby valour1 » Wed Aug 22, 2012 7:01 pm

Ok soldered the wires for 6 plug connector started up bike ran fine till hiccup then it went away
thing I notice that when I put my hand on rectifier (regulator) I guess thats what parts manual calls it
was hot 169 degrees F followed the wires and they were hot also is this normal I pulled the tape off harness to see if was shorted in there did not find anything see picture attached


User avatar
valour1
Posts: 36
Joined: Sun Aug 07, 2011 3:00 pm
Location: Canada
Motorcycle: 1985 GL1200IF GoldWing Interstate

Re: Lost power

Postby valour1 » Wed Aug 22, 2012 8:13 pm

Forgot to mention that the battery has 12.6 volts and at 3000 rpm charging at 14.75 volts

User avatar
virgilmobile
Posts: 7649
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Lost power

Postby virgilmobile » Wed Aug 22, 2012 8:28 pm

I've never measured the running temp on my 84 but I will,just to see.The temp sounds about normal tho.I'll re-post in just a bit.
I would be more concerned about the volts.It's a bit high. 14.3 max is ideal.I usually live with up to 14.5 before I modify the circuit with a relay to get it back down.sense I've done mine,the DVM on the battery runs between 13.6 at a idle to 14.3 peak.

User avatar
virgilmobile
Posts: 7649
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Lost power

Postby virgilmobile » Wed Aug 22, 2012 8:45 pm

OK,I've run my bike for 2 years and modified the charging system 4 months ago.It does have a new battery too.After Running the bike at 1500 rpm for 10 minutes, the volts are at 14.3 and the regulator was at 164° .
Volt vary from 13.9 to 14.4 depending on load and rpm.

User avatar
valour1
Posts: 36
Joined: Sun Aug 07, 2011 3:00 pm
Location: Canada
Motorcycle: 1985 GL1200IF GoldWing Interstate

Re: Lost power

Postby valour1 » Thu Aug 23, 2012 9:09 am

When I posted voltage reading of 14.7 should of said that is under load cause when you turn ignition on all lights are on going to remove fuse and retest

User avatar
valour1
Posts: 36
Joined: Sun Aug 07, 2011 3:00 pm
Location: Canada
Motorcycle: 1985 GL1200IF GoldWing Interstate

Re: Lost power

Postby valour1 » Thu Aug 23, 2012 7:15 pm

Not happy I got bike running after soldering connections thinking fixed problem it throws me hiccup hasn't stall stays running have choke open rpms up the drop then come back up I have noticed that wires from main harness that lead to rectifier regulator are hot removed tape that wrapped them was so easy as they are hot. What would cause the still thinking rectifier is faulty redid wires for stator suggestions




Return to “GL1200 Information & Questions”




Who is online

Users browsing this forum: Yahoo Slurp [Bot] and 6 guests