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Helier
Joined: 19 Feb 2018 Posts: 28 Location: Truro, Cornwall
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Posted: Sun May 31, 2020 14:36 Post subject: Moody electrics |
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Afternoon all,
I have one of those entertaining intermittent electrical faults. On start-up the following don't work:
windows
heater fan
wipers
some dash lights
radio
etc.
If I drive for quarter of a of mile everything comes back on, but can then go off again without any warning. If I stop, park and switch off, nothing will work gain untll I drive another quarter of a mile. I have removed, checked and replaced evey single fuse in both of the fuse boxes (under driver's dash and air cleaner side of engine bay).
However, today I noticed that the alternator does not seem to be charging - the voltmeter stays at 10v before and after start up and does not move with engine revs. It also does not change when the electrics all come back to life. The alternator is less than four years old.
I seem to remember that there is/are a fuse or fuses actually mounted on the alternator - is this correct? If so, where and how do I get to them?
Any ideas, suggestions or offers to buy the bus will be welcome. |
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Posted: Sun May 31, 2020 14:36 Post subject: Google Ads keep this community free to join! |
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YOZA
Joined: 07 Mar 2005 Posts: 2423 Location: The centre of the universe
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Posted: Sun May 31, 2020 15:55 Post subject: |
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Check your three slow blow 80 amp and 100 amp fuses that are attached to the + on your battery.
If not them, then my money would be on a faulty alternator rectifier, test it with a meter, should be 12.5 volts plus with engine running and glow plugs off. _________________ Artificial intelligence is no match for natural stupidity.... |
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Deker
Joined: 08 Mar 2008 Posts: 3833 Location: Borehamwood
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Posted: Sun May 31, 2020 18:08 Post subject: |
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Is this for L400
There is also a fuse for charging, in the engine bay fuse box. NOT on the Alternator (or shouldn't be)
It is coloured Blue = 100 Amp.
NOTE: These heavy fuses are bolted in place, slacken the bolts, and the fuse/s should pull out.
And oddly, the two bolts on each fuse have different size tools - Best use a 1/4" drive socket set.
If fuses are good - then it appears Alternator is Vor Sprung Duff
HTH
Mr D |
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Helier
Joined: 19 Feb 2018 Posts: 28 Location: Truro, Cornwall
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Posted: Sun May 31, 2020 20:04 Post subject: |
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Thanks gents. Cardinal sin, yes L400 SE 2.8TD.
I haven't checked the bolt down fuses - will do.
The odd thing is that everything starts working within 1/4 mile - I've repeated this six times in a row. Then it will go off again randomly, or if I turn the motor off. |
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mark3
Joined: 29 Nov 2009 Posts: 905 Location: Rainham Village, Essex
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Posted: Mon Jun 01, 2020 5:36 Post subject: |
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I would had thought it's unlikely to be a blown fuse as once it's blown its blown, it won't repair itself 1/4 mile down the road
Chances are its a bad connection somewhere but where i don't know? _________________
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Lewis Site Admin
Joined: 25 May 2006 Posts: 16291 Location: Huddersfield
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Posted: Mon Jun 01, 2020 10:07 Post subject: |
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I was going to post a link to the L400 fuse box translation sticky post I put up a while back, which shows which fuses have multiple functions. Plus the location of all the various fuse boxes and battery looms, etc.
Unfortunately it, along with lots of other posts, has dissapeared ? _________________
Copyright is retained for all my photos. Please don't copy them without asking permission
Do not blindly go where the path may lead you. Go where there is no path and leave a trail that others may follow!
ルイス |
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andyman
Joined: 08 Dec 2012 Posts: 5601 Location: Penrith
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Posted: Mon Jun 01, 2020 14:04 Post subject: |
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Have you cleaned and checked all connections to the alternator for tightness? _________________ Andy C L300 Super Exceed - over 100 smiles per gallon! |
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Fostlongstrider Lifetime member
Joined: 03 Mar 2008 Posts: 2589 Location: Hedon, East Yorks
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Posted: Tue Jun 02, 2020 11:01 Post subject: |
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AS Andy says check alternator plug, they do come loose. _________________ Ian.
All the best from the East Riding of Yorkshire.
'93 L300 Super Exceed Corse Gray over Grace Silver.Auto.
Flying Brick Supporter. |
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Deker
Joined: 08 Mar 2008 Posts: 3833 Location: Borehamwood
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Posted: Tue Jun 02, 2020 20:33 Post subject: |
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Lewis wrote: |
I was going to post a link to the L400 fuse box translation sticky post I put up a while back, which shows which fuses have multiple functions.
Unfortunately it, along with lots of other posts, has dissapeared ? |
I have printed copies - Any help
Mr D |
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Deker
Joined: 08 Mar 2008 Posts: 3833 Location: Borehamwood
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Posted: Tue Jun 02, 2020 20:40 Post subject: Loss of posts |
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Hey up.
What's going on
Looked in Electrical Issues - Loads O posts - - - GONE
Including my Sticky about test lamps.
OR, am I doing something wrong. When looking at the Index
Mr D |
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Deker
Joined: 08 Mar 2008 Posts: 3833 Location: Borehamwood
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Posted: Tue Jun 02, 2020 20:52 Post subject: |
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Helier wrote: |
The odd thing is that everything starts working within 1/4 mile - I've repeated this six times in a row. Then it will go off again randomly, or if I turn the motor off. |
Could be Alternator Brushes - Sticky or Worn.
Mr D |
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Lewis Site Admin
Joined: 25 May 2006 Posts: 16291 Location: Huddersfield
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Posted: Tue Jun 02, 2020 22:39 Post subject: Re: Loss of posts |
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Deker wrote: |
Hey up.
What's going on
Looked in Electrical Issues - Loads O posts - - - GONE
Including my Sticky about test lamps.
OR, am I doing something wrong. When looking at the Index
Mr D |
Nope! that is what I posted about above. I spotted the issue the other day looking for my Post on the Fuses, etc. There were only three posts in the forum.
I notified Simon, who checked, but we don't know why almost everything in there has gone.
NB: Derek I have the individual photos and diagrams I used to create the post, but there was lots of other info in it that is now lost _________________
Copyright is retained for all my photos. Please don't copy them without asking permission
Do not blindly go where the path may lead you. Go where there is no path and leave a trail that others may follow!
ルイス |
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Helier
Joined: 19 Feb 2018 Posts: 28 Location: Truro, Cornwall
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Posted: Sun Jun 07, 2020 15:07 Post subject: |
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And the prize goes to .......... Yoza. Nail on the head with the first reply.
The 100amp bolt in fuse showed signs of living up to its name and acheiving fusion temperatures. Amazingly, I had a spare one sitting in my glovebox!
Anyway, thanks again to everyone who offer advice and I do hope the missing posts turn up. |
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YOZA
Joined: 07 Mar 2005 Posts: 2423 Location: The centre of the universe
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Posted: Mon Jun 08, 2020 15:07 Post subject: |
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I amaze myself all the time. _________________ Artificial intelligence is no match for natural stupidity.... |
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Green Grouch Lifetime member
Joined: 14 Feb 2012 Posts: 1264 Location: Dorset
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Posted: Mon Jun 08, 2020 21:51 Post subject: |
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Lewis wrote: |
I was going to post a link to the L400 fuse box translation sticky post I put up a while back, which shows which fuses have multiple functions. Plus the location of all the various fuse boxes and battery looms, etc.
Unfortunately it, along with lots of other posts, has dissapeared ? |
And I thought it was just mine that went missing.
That is worrying as the forum functions on using older posts with all the info to hand.
Bloody computers
_________________ A Little Knowledge is Dangerous and expensive! especially if your me Mending anything!! |
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Lewis Site Admin
Joined: 25 May 2006 Posts: 16291 Location: Huddersfield
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Posted: Tue Jun 09, 2020 10:24 Post subject: |
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I only worry about the ones in the tech Faqs, type forum, as those are not self deleting forums.
Some of mine that have dissappeared were ones where photobucket had blocked the images from third party use.
Those images I've already replaced over time, as members noticed them and sent me links.
Unfortunately some of the images had been totally lost, due to having a computer crash at home, with no backups available.
However with the advent of low cost 3TB External drives I have more than one copy of them. It is just the text that is lost, along with bits of info picked up and added over time.
The main issue at the moment is getting the energy together to redo the posts. _________________
Copyright is retained for all my photos. Please don't copy them without asking permission
Do not blindly go where the path may lead you. Go where there is no path and leave a trail that others may follow!
ルイス |
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Fostlongstrider Lifetime member
Joined: 03 Mar 2008 Posts: 2589 Location: Hedon, East Yorks
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Posted: Fri Jun 12, 2020 23:26 Post subject: |
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Gone to just 2 posts in this section.
What is going on? _________________ Ian.
All the best from the East Riding of Yorkshire.
'93 L300 Super Exceed Corse Gray over Grace Silver.Auto.
Flying Brick Supporter. |
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Lewis Site Admin
Joined: 25 May 2006 Posts: 16291 Location: Huddersfield
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Posted: Sat Jun 13, 2020 6:41 Post subject: |
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See my posts above. _________________
Copyright is retained for all my photos. Please don't copy them without asking permission
Do not blindly go where the path may lead you. Go where there is no path and leave a trail that others may follow!
ルイス |
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