UK Monster Owners Club Forum » .: Technical :. » Electrics » Ignition cut out

Reply
 
Thread Tools Display Modes
Old 16-02-2020, 10:20 AM   #1
Flip
Registered User
 
Flip's Avatar
 
Join Date: Mar 2010
Location: Beachtown
Bike: M900
Posts: 2,188
While it is very likely to be a broken wire in the loom around the head stock another possible cause worth checking out is the condition of the 'General' (Yellow) relay under the seat.

You can carefully prise it open and have a look at the contacts- if they are black and or pitted it could be your problem before you go cutting into the sleeving and looking for broken wires.

Either way it's worth getting a spare relay and popping it into the little box under the seat just in case.
__________________
You're perfect, yes, it's true- But without me you're only you!
Flip is offline   Reply With Quote
Old 16-02-2020, 11:30 AM   #2
Mr Gazza
Lord of the Rings
 
Mr Gazza's Avatar
 
Join Date: May 2013
Location: Norwich
Bike: M900sie
Posts: 5,834
Flip makes a good call with the general relay. It's a good to spare to have around anyway, as he says, but personally I wouldn't store it in the bike as it's subject to possible damp, heat and vibration.
I had a grumbly general relay on my first Monster. I couldn't get to the dealer for a while, when it played up, but I helped it along for a couple of weeks by putting it in my pocket when I got to work, this ensured a reliable start up for the run home.
Try putting your relay in your airing cupboard or on a radiator for a day and see if it makes any difference.. Keep your spare relay somewhere dry and warm.

I did also experience the old broken wire in the loom round the headstock syndrome on that one, on another occasion.
__________________

Last edited by Mr Gazza; 16-02-2020 at 11:33 AM..
Mr Gazza is offline   Reply With Quote
Old 16-02-2020, 11:57 AM   #3
Mr Gazza
Lord of the Rings
 
Mr Gazza's Avatar
 
Join Date: May 2013
Location: Norwich
Bike: M900sie
Posts: 5,834
Your comment on 10V when the starter is pressed does not ring any particular alarm bells.
It's usual to get a significant voltage drop when the starter is cranking.
To get a better picture, put your meter across the battery terminal's. Expect to see 12 to 13 volts with the ignition off. Read the voltage when cranking to measure the voltage drop. When the engine fires and runs, the voltage should recover almost immediately to the former and rise to about 14.5 volts as the charging current comes through.
Excessive voltage drop is caused by a dying battery losing it's Cold Cranking Amp ability (CCA), and/or high resistance in the starter cables. Nice bright connections on the heavy leads throughout the starter circuit help to reduce the voltage drop... Don't overlook the heavy Earth lead connected to the engine (or frame on earlier models).

Do be careful with the starter terminal stud. Make sure that it doesn't turn when you undo the nut, as this will mangle the connections inside the starter!

I think it's unlikely that your problem is in this circuit although it's a good regular service item anyway.
__________________

Last edited by Mr Gazza; 16-02-2020 at 12:02 PM..
Mr Gazza is offline   Reply With Quote
Old 17-02-2020, 05:22 AM   #4
Ady00
Registered User
 
Ady00's Avatar
 
Join Date: Feb 2011
Location: Peterborough
Bike: M900
Posts: 53
Quote:
Originally Posted by Mr Gazza View Post
Your comment on 10V when the starter is pressed does not ring any particular alarm bells.
It's usual to get a significant voltage drop when the starter is cranking.
To get a better picture, put your meter across the battery terminal's. Expect to see 12 to 13 volts with the ignition off. Read the voltage when cranking to measure the voltage drop. When the engine fires and runs, the voltage should recover almost immediately to the former and rise to about 14.5 volts as the charging current comes through.
Excessive voltage drop is caused by a dying battery losing it's Cold Cranking Amp ability (CCA), and/or high resistance in the starter cables. Nice bright connections on the heavy leads throughout the starter circuit help to reduce the voltage drop... Don't overlook the heavy Earth lead connected to the engine (or frame on earlier models).

Do be careful with the starter terminal stud. Make sure that it doesn't turn when you undo the nut, as this will mangle the connections inside the starter!

I think it's unlikely that your problem is in this circuit although it's a good regular service item anyway.
Ok makes sense for the voltage drop but starter not cranking and this only happens when there is no ignition, I don’t see why the solenoid doesn’t work as I have a 10v feed to it or, why I don’t have ignition if the solenoid is faulty unless as people say it is a broken wire and both are powered by it but then I wouldn’t expect to see 10v on the solenoid feed, thanks.... Ady
__________________
Light travels faster than the speed of sound thats why some people appear bright until they speak
Ady00 is offline   Reply With Quote
Old 17-02-2020, 05:14 AM   #5
Ady00
Registered User
 
Ady00's Avatar
 
Join Date: Feb 2011
Location: Peterborough
Bike: M900
Posts: 53
Quote:
Originally Posted by Mr Gazza View Post
Flip makes a good call with the general relay. It's a good to spare to have around anyway, as he says, but personally I wouldn't store it in the bike as it's subject to possible damp, heat and vibration.
I had a grumbly general relay on my first Monster. I couldn't get to the dealer for a while, when it played up, but I helped it along for a couple of weeks by putting it in my pocket when I got to work, this ensured a reliable start up for the run home.
Try putting your relay in your airing cupboard or on a radiator for a day and see if it makes any difference.. Keep your spare relay somewhere dry and warm.

I did also experience the old broken wire in the loom round the headstock syndrome on that one, on another occasion.
Back shelf of the aga is where that relay is going then, going to try the handlebar wiggle first, will be doing that Saturday will post what I find, thanks.....Ady
__________________
Light travels faster than the speed of sound thats why some people appear bright until they speak
Ady00 is offline   Reply With Quote
Old 17-02-2020, 05:07 AM   #6
Ady00
Registered User
 
Ady00's Avatar
 
Join Date: Feb 2011
Location: Peterborough
Bike: M900
Posts: 53
Quote:
Originally Posted by Flip View Post
While it is very likely to be a broken wire in the loom around the head stock another possible cause worth checking out is the condition of the 'General' (Yellow) relay under the seat.

You can carefully prise it open and have a look at the contacts- if they are black and or pitted it could be your problem before you go cutting into the sleeving and looking for broken wires.

Either way it's worth getting a spare relay and popping it into the little box under the seat just in case.
Will give that a look although all other electrics are fully working, the last that relay failed it affected everything, I’m sure I get to the bottom of it soon I just want to cause the least amount of damage as possible. Thanks.....Ady
__________________
Light travels faster than the speed of sound thats why some people appear bright until they speak
Ady00 is offline   Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 10:18 PM.

vBulletin Skins by vBmode.com. Powered by vBulletin® Version 3.8.3
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.