Fuel pump stopped working - dead end!? & Puzzled


Information and questions on GL1500 Goldwings (1988-2000)
  • Sponsored Links
ferns
Posts: 17
Joined: Wed Nov 05, 2014 10:13 am
Location: Colorado Springs CO
Motorcycle: 1991GL1500 interstate Anniversary

Fuel pump stopped working - dead end!? & Puzzled

Postby ferns » Sat Aug 22, 2015 10:32 pm



I have a 1991 Goldwing GL 1500 interstate anniversary model.

The other day on my way to Denver it just cut out. Sounded like a fuel problem. Well needless to say I brought it home and did a fuel check like they say in the manual. No fuel coming through. Tested the pump with direct current and the pump just pumps fine. I know it is not the pump. The next thing was to check the fuel pump relay according to the manual it sits behind the right hand saddle bag under the trunk. So I opened it all up, the bracket is there but no fuel pump relay. That of course left me a little bit in the dark.

The next step is the ECU but before I go there, where will this relay be or does it even have one, or does it work through the ECU. On the wiring diagram it does show that there is a relay involved the manual also show there is a relay but nothing I can find.
:o



User avatar
dingdong
Posts: 2864
Joined: Thu Apr 08, 2010 8:35 am
Location: Oklahoma City
Motorcycle: 1976 gl1000
1993 gl1500
2004 NRX1800 Rune

Re: Fuel pump stopped working - dead end!? & Puzzled

Postby dingdong » Sun Aug 23, 2015 8:40 am

The fuel pump will only work for a couple of seconds when the key is first turned on. Then will run after the engine is started. You should check the vacuum operated fuel petcock to make sure it is working. It is mounted just in front of the gas cap.

Tom
Tom

A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

ferns
Posts: 17
Joined: Wed Nov 05, 2014 10:13 am
Location: Colorado Springs CO
Motorcycle: 1991GL1500 interstate Anniversary

Re: Fuel pump stopped working - dead end!? & Puzzled

Postby ferns » Sun Aug 23, 2015 9:18 am

Thanks for the response let me start there, see if all is alright there. hopefully I wont be back.

ferns
Posts: 17
Joined: Wed Nov 05, 2014 10:13 am
Location: Colorado Springs CO
Motorcycle: 1991GL1500 interstate Anniversary

Re: Fuel pump stopped working - dead end!? & Puzzled

Postby ferns » Sun Aug 23, 2015 10:02 am

I took a 12 v circuit tester and checked on the live side of the pump no light when the ignition is switched on, also when I run the start button no electricity. So I definitely do not get any electricity there. :cry:

User avatar
virgilmobile
Posts: 7659
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: Fuel pump stopped working - dead end!? & Puzzled

Postby virgilmobile » Sun Aug 23, 2015 12:50 pm

I'll poke my nose in.To the best of my remembering,the fuel pump is driven directly from the ignition module.With the pump unplugged,you should be able to light a test light on that wire when the key is turned on(about 2 seconds) and while cranking if there is spark.
If there is no volts there,the module is bad.
This is a 2 part problem.The module has a transistor in it that is capable of near 5 amp continous.Should the pump have a problem and draw near that or briefly over the 5 amp limit,it will destroy that transistor.Unfortunatly,Honda did not fuse the fuel pump seperatly.If you or someone you know is capable,remove the module and cover.You will find the transistor in the top right corner..near the plugs...
It can be removed and a generic PNP (I think)power transistor rated for more than 5 amp fitted in its place.
This is a 50/50 chance of fixing the module.The next is the pump.It should be tested for current draw and cleaned before putting back in service.I also recommend adding a inline fuse feeding the pump to protect the module.preferably one that is 125% larger than what the pump draws.No more than a 5 amp.

User avatar
Charlie1Horse
Posts: 165
Joined: Mon Sep 16, 2013 9:35 pm
Location: Jacksonville, Florida
Motorcycle: 1986 GL1200A Aspencade 4Sale soon
1992 GL1500I Interstate

Re: Fuel pump stopped working - dead end!? & Puzzled

Postby Charlie1Horse » Sun Aug 23, 2015 1:04 pm

That sounds like what my 92 Interstate did a few weeks ago. I checked the FSM and here for more info. After a little research it turned out to be a bad connection on the kill switch on the right handlebar. Positive battery power goes from the ignition relay to the kill switch and then to the ECM which controls everything. Check that first.


Those who say it can't be done should try not to interrupt those who are doing it.

User avatar
virgilmobile
Posts: 7659
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: Fuel pump stopped working - dead end!? & Puzzled

Postby virgilmobile » Sun Aug 23, 2015 1:15 pm

One can eliminate the kill switch,sensors,BAS,etc by one simple test.Does it have spark while cranking.

ferns
Posts: 17
Joined: Wed Nov 05, 2014 10:13 am
Location: Colorado Springs CO
Motorcycle: 1991GL1500 interstate Anniversary

Re: Fuel pump stopped working - dead end!? & Puzzled

Postby ferns » Sun Aug 23, 2015 2:12 pm

virgilmobile wrote:I'll poke my nose in.To the best of my remembering,the fuel pump is driven directly from the ignition module.With the pump unplugged,you should be able to light a test light on that wire when the key is turned on(about 2 seconds) and while cranking if there is spark.
If there is no volts there,the module is bad.
This is a 2 part problem.The module has a transistor in it that is capable of near 5 amp continous.Should the pump have a problem and draw near that or briefly over the 5 amp limit,it will destroy that transistor.Unfortunatly,Honda did not fuse the fuel pump seperatly.If you or someone you know is capable,remove the module and cover.You will find the transistor in the top right corner..near the plugs...
It can be removed and a generic PNP (I think)power transistor rated for more than 5 amp fitted in its place.
This is a 50/50 chance of fixing the module.The next is the pump.It should be tested for current draw and cleaned before putting back in service.I also recommend adding a inline fuse feeding the pump to protect the module.preferably one that is 125% larger than what the pump draws.No more than a 5 amp.


"let me take a look, and do the test you suggest. :oops: not sure where the module and cover are situated sorry about that hope to learn, very good and willing with my hands though.

User avatar
virgilmobile
Posts: 7659
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: Fuel pump stopped working - dead end!? & Puzzled

Postby virgilmobile » Sun Aug 23, 2015 2:23 pm

Does it have spark to the plugs.?

ferns
Posts: 17
Joined: Wed Nov 05, 2014 10:13 am
Location: Colorado Springs CO
Motorcycle: 1991GL1500 interstate Anniversary

Re: Fuel pump stopped working - dead end!? & Puzzled

Postby ferns » Sun Aug 23, 2015 2:29 pm

On my way to check if I have spark on the plugs will let you know

ferns
Posts: 17
Joined: Wed Nov 05, 2014 10:13 am
Location: Colorado Springs CO
Motorcycle: 1991GL1500 interstate Anniversary

Re: Fuel pump stopped working - dead end!? & Puzzled

Postby ferns » Sun Aug 23, 2015 2:39 pm

virgilmobile wrote:Does it have spark to the plugs.?


" No it does not have spark to the spark plugs"

User avatar
virgilmobile
Posts: 7659
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: Fuel pump stopped working - dead end!? & Puzzled

Postby virgilmobile » Sun Aug 23, 2015 3:02 pm

Ahhhhhh....no spark no fuel....

See what I go and do before I have all the details...I should have known better and asked about the spark...my bad..I just got ahead of myself.
The power to the fuel pump comes from the ignition module...if it doesn't have power neither would the pump or would it have spark.
As mentioned above,get to the kill switch wires.Somewhere you lost volts to the ignition module...The kill switch is a good place to start.

User avatar
virgilmobile
Posts: 7659
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: Fuel pump stopped working - dead end!? & Puzzled

Postby virgilmobile » Sun Aug 23, 2015 3:17 pm

Here's the basic schematic...Take note of the voltage path through the fuse and relay to get to the kill switch then it's off to the module.

ferns
Posts: 17
Joined: Wed Nov 05, 2014 10:13 am
Location: Colorado Springs CO
Motorcycle: 1991GL1500 interstate Anniversary

Re: Fuel pump stopped working - dead end!? & Puzzled

Postby ferns » Sun Aug 23, 2015 3:56 pm

Thank you very much for your trouble I will investigate a little bit and follow the instructions you have explained. Let me do some thinking and I will take it from there! again appreciate your trouble let me chew a little bit on this and will get back to you.

ferns
Posts: 17
Joined: Wed Nov 05, 2014 10:13 am
Location: Colorado Springs CO
Motorcycle: 1991GL1500 interstate Anniversary

Re: Fuel pump stopped working - dead end!? & Puzzled

Postby ferns » Sun Aug 23, 2015 3:58 pm

Thank you very much for your trouble I will investigate a little bit and follow the instructions you have explained. Let me do some thinking and I will take it from there! again appreciate your trouble let me chew a little bit on this and will get back to you.

User avatar
ct1500
Posts: 813
Joined: Wed Nov 10, 2010 8:09 pm
Location: Glastonbury,CT
Motorcycle: 1988 GL1500
Contact:

Re: Fuel pump stopped working - dead end!? & Puzzled

Postby ct1500 » Sun Aug 23, 2015 4:36 pm

Yup, no power to the ECM is the likely case. Just for the record only the 88-89 models had the fuel pump relay which activated for 2 seconds when key is turned to ON. '90 and up models fuel pump gets power direct from ECM and runs with engine cranking or running only.
This is what I do
Local and need repair help with your 1500, Valkyrie or ST please PM

User avatar
ct1500
Posts: 813
Joined: Wed Nov 10, 2010 8:09 pm
Location: Glastonbury,CT
Motorcycle: 1988 GL1500
Contact:

Re: Fuel pump stopped working - dead end!? & Puzzled

Postby ct1500 » Mon Aug 24, 2015 4:18 am

A quick test for ign power is to confirm the cruise ON light will activate with key ON and kill switch to run. In addition to the above a faulty BAS will cause a no start.
This is what I do
Local and need repair help with your 1500, Valkyrie or ST please PM

ferns
Posts: 17
Joined: Wed Nov 05, 2014 10:13 am
Location: Colorado Springs CO
Motorcycle: 1991GL1500 interstate Anniversary

Re: Fuel pump stopped working - dead end!? & Puzzled

Postby ferns » Mon Aug 24, 2015 8:40 am

Well some back report. First of all thanks for all the input, very kind of everyone. There is no relay and the diagram is correct. I opened the kill switch and it has been tampered with before, screws on the inside had some wear on it. I backed up the screws on the switch itself made a jumper cable and there it went. Started right up purred like it use to. I reassembled the wires and did not make the screws as tight as it was, needles to say it's working. Well I have everything together and the wheels are turning.

Thanks everyone for the time what a great site, at least I am impressed saves a lot.

Eugene
Thankful




Return to “GL1500 Information & Questions”




Who is online

Users browsing this forum: Bing [Bot] and 4 guests