Ob
28 posts
Joined: 03/12/2004 21:54:05
Location: United Kingdom (Excluding channel Islands)
voltage reg
Im not sure on the Mini, but on my landrover the + side of the dials comes from a voltage regulator, it this is not working properly the dials will display the wrong value (or appear not to work) but shorting to earth will make them move. Youd need to check the wiring diagram (in the haynes manual)
Posted: Feb 06, 2005 08:57 PM
pickme
672 posts
Joined: 08/09/2004 23:10:14
Location: Chippenham United Kingdom (Excluding channel Islands)
Voltage regulators ahoy!
Yep the above is probably right. I had the same problem with a massively over heating pickup that turned out to be caused by taking a direct 12v feed into the guage before earthing it out through the sensor (thats how it works FWIW). Take a feed off the back of the speedo (is this a single centre speedo?) or where ever the fuel gauge gets its power and try that.
Posted: Feb 07, 2005 06:57 PM
voltage
Could be a faulty voltage regulator. If the temp sensor doesnt get a constant stable supply it will behave strangely. For instance, if you wire up a temp sensor to 12v off the fuse box it will go straight to red hot and stay there.
Posted: Nov 14, 2005 10:11 PM
Dave
16 posts
Joined: 19/09/2006 17:54:46
Location: Whitburn United Kingdom (Excluding channel Islands)
voltage getting lower and lower AGAIN!
Hello,
been having trouble with this for a few weeks now. voltmeter will increase to 13V when i sit stationary and have everything off. i have replace battery and alternator as they were needing replaced and everything was going great since last week, till last nite.
Also checked my coil as had some ignition problems before, replaced that today. still getting lights dimming and 11V reading. cant even listen to the sterio!
have a little trouble with wipers as wiper motor park switch needing replaced and will be done in next 2 days.
Anyone any other ideas to what this might be?
All fuses have been checked and dissy, rotor arm is fine. cleaned spark plugs and HT leads are ok.
Any ideas would be greatly appreciated.
David
Posted: Jan 11, 2007 09:49 PM
Posted: Jan 11, 2007 10:21 PM
A. Watts
43 posts
Joined: 20/11/2006 07:35:52
Location: Maidenhead United Kingdom (Excluding channel Islands)
Have you tried checking the earth connections? especially on the battery, they might be loose/dirty and not enabeling the battery to be charging properly, hope this helps.
Alex
Posted: Jan 13, 2007 04:06 AM
Roy
261 posts
Joined: 19/09/2005 19:34:20
Location: huntingdon United Kingdom (Excluding channel Islands)
Sounds like you have the same problem that I had untill recently which was a slow 'leak' which persistantly flattens your battery.
To detect what is causing it you should disconnect the battery earth lead, then removing each fuse at a time test for voltage between the battery and the terminal using a multi-tester. (making sure your cd, satnav etc..is disconnected first)
Re-place each fuse after testing and move on to the next fuse and test again untill you find which fuse stops the leak when removed by indicating no voltage at the battery earth lead when tested.
This should help narrow down the faulty circuits. Removing any line fuses in those circuits and testing again should narrow the fault down still further untill you should have found the problem area by disconecting the individual circuit protected by those line fuses that produce a negative reading when tested.
This sounds like a bit of a pain you know where, but this does work. My own problem turned out to be a non-standard hazard warning flasher unit that had been earthed out by a spare terminal on the unit to the bodywork in order to get it to work.
Posted: Jan 18, 2007 10:13 PM
R.Godsmark
4 posts
Joined: 10/10/2006 21:04:48
Location: Düsseldorf Germany
I had a similar problem, turned out to be an earth strap from the cylinder head to under the top engine steady.
Posted: Feb 06, 2007 07:55 PM
Turns out I still have the battery drain!....gave the old beast a 120 mile round trip to London last night and this morning, the day after, what should have been an easy start turned into a heavy swearing session as all it did was turn over very slowly a couple of times then die in the newly fallen snow!..... I had used the wipers and high beams so I have a couple of new suspects to investigate, especially the high beam flasher switch as it works independently of the ignition switch...
Posted: Feb 08, 2007 10:12 PM
a. mericanminifreak
183 posts
Joined: 02/11/2007 23:17:14
Location: rosbach v.d.hohe Germany
VOLTAGE STABILIZER
I just got ahold of another Center tacho from 1969 and on the back is the voltage stabilizer i know it attaches to the fuel gage but i dont know how...ive been looking on the net for diagrams all over but found nothing and the haynes i have isnt all that great, is anyone fimiliar with cuch thing and do they know wich cabels and where the attatch to the stabilizer and to the fuel gauge? thanks for any input..
Posted: Jan 08, 2008 06:52 PM
david godfrey
6 posts
Joined: 01/01/2008 17:51:36
Location: Wirral United Kingdom (Excluding channel Islands)
ive attached an image i made which sould give you a basic idea of the method for wiring these clocks when looking at the back of the clocks
hope this helps
Posted: Jan 13, 2008 08:52 PM
Thanks alot for your help i got it all set up now and works great, Whats your MOS
Posted: Jan 13, 2008 08:58 PM
Simon Hutchings
3 posts
Joined: 06/05/2007 18:41:53
Location: Rugby United Kingdom (Excluding channel Islands)
charging voltage
Hi,
Is there anyone out there that has a 1960's cooper with a C40/1 dynamo and a RB106 regulator that could measure the voltage across the battery whilst the engine is at approx 2000 rpm please?
I have set up my reg as per the instructions and also bought a new one from here and checked the readings again and all is as it should be except the voltage across the battery is almost 16V whilst charging which keeps cooking my batteries. I cannot find any reason for it except that the battery is not imposing a big enough load but I tried my 72A/h from my MG and it still reads the same.
Any help would be greatly appreciated.
Posted: May 09, 2010 03:16 PM
Barry Brown
511 posts
Joined: 23/06/2008 12:08:31
Location: New Barn United Kingdom (Excluding channel Islands)
Simon - I feel your pain. I've just been through this recommissioning a '69 848cc with C40/RB106 combination. Mine wasn't helped by the fact that the original dynamo was knackered and during the cleaning of the points of the regulator I had messed up the air gaps.
I tried setting it buy the procedure in the lucas manual and couldn't get on with it so i dug out an old haynes manual and set the regulator air gaps with feeler gauges.
With new dynamo (GXE3101N) at tickover i was getting 0.9v. At 1500rpm I was getting 2.8v. measured with voltmeter between earth strap and D terminal on dynamo (disconnected from regulator)
Then we fixed the regulator and I was initially getting 16.5 volts across the battery until I set the air gaps on the right hand bobbin. there's two air gaps to worry about. I then used the screw on top to fine tune it and now see 13.5v across the battery when charging. (lucas say 12.7 to 13.3v is normal)
If you can't find a haynes book with the manual adjustment drop me a line at barry.brown@hp.com and I'll scan the relevant page in and send it to you.
Barry
Posted: May 10, 2010 02:18 PM
try these - don't know if it's the same procedure you used to set up in the first place.
Posted: May 11, 2010 09:53 AM
Hi Barry,
thanks for all this. I have that manual and have set up the reg as per the instructions. It tells me to set the reg so that a no load gives approx 16V, is this what you have done? I also have a book by Rick Astley that states that the RB106 does charge upto 16V. I'm just wondering if it the modern batteries that cannot take this sort of punishment and the ones around in the 60's could.
Thanks for your help. Just got to decide if I want to stay original or fit one of the current controlled boxes that are set at 15V.
Cheers, Simon
Posted: May 11, 2010 11:13 AM
Pritch1971
1 posts
Joined: 30/11/2018 09:39:17
Location: Market Drayton United Kingdom (Excluding channel Islands)
Voltage indication 1987 998 mini advantage
As a new owner of a classic mini I have encountered my first issue, with electrics. I went start the mini yesterday and it just returned me the repeated sound of the starter relay clicking over. Battery voltage low. So I have invested in a portable jumper pack and she fired up fine. I drove her around town and left her running for over 2 hours. turned her off, tried to restart and i was met with the same relay noise. I also noticed that when I am driving around and I draw on an electrical course the voltage drops dramatically. I have removed the battery and put it on charge it was drawing between 2-3 Amps on a trickle charger. HOWEVER my question is is this an indication that my alternator is on its way out if not given up the ghost already and should I invest in the 70 Amp alternator available on mini spares.
Thanks in advance
Peter Pritchard
Posted: Dec 04, 2018 03:44 PM
Tim
1852 posts
Joined: 18/10/2004 09:40:59
Location: Bournemouth United Kingdom (Excluding channel Islands)
Sounds like your alternator has packed up. There are places that repair them, if you don't mind waiting a few days. I'm not convinced the upgraded 70-amp alternator is worth the money, unless you're running a big sound system in the boot.
Posted: Dec 05, 2018 07:32 AM
John
1948 posts
Joined: 28/05/2006 16:49:46
Location: cambridge United Kingdom (Excluding channel Islands)
mini not charging properly
my car seems to have a simular problem iv replaced alternator and seems to be puting in gd voltage now about 14.5 V at 2000 rpm but still my charging warning light comes on occationally and i made sure fan belt is tight and all the earthing straps are new so dont think there the problem. i heard on the net somewhere that the voltage stabaliser can affect charging dunno if thas right but im replacing it as my water temp and fuel gauge arnt working. does anyone know if the voltage stabaliser has any affect on the charging regulation?
Posted: May 28, 2006 05:02 PM
taffy1967
1783 posts
Joined: 27/09/2006 18:58:07
Location: Rhondda-Cynon-Taff United Kingdom (Excluding channel Islands)
FUEL GAUGE
I doubt it, the type fitted to the instruments is a dedicated voltage regulator.
Posted: Aug 07, 2007 03:37 PM