battery light coming on intermittantly

john91919 · 18th February 2012, 13:56

Hi,

The battery light is coming on intermittantly on my 75 2.0 CDT diesel usually at start up.

Seems ok when only minimal electrics are being used.

When a/c is running and radio etc the light comes on.

Checked with a multimeter read about 13.2v with engine running and seemed to drop when revved.

Any ideas?

Cheers
John

oldcarguy · 18th February 2012, 13:59

Sounds like alternator, had it years ago on the way to Wales, charging on idle but not at higher revs.

HarryM1BYT · 18th February 2012, 14:01

Quote:

Originally Posted by john91919

Hi,

The battery light is coming on intermittantly on my 75 2.0 CDT diesel usually at start up.

Seems ok when only minimal electrics are being used.

When a/c is running and radio etc the light comes on.

Checked with a multimeter read about 13.2v with engine running and seemed to drop when revved.

Any ideas?

Cheers
John

That would seem to point to alternator failure, but check the battery first - put it on a charger, give it a full charge then check the on charge and off charge voltage. On = 13.8 /14.2 Off = 12.5 /12.8v

john91919 · 18th February 2012, 15:13

Thanks the info, thought it would be one or the other.

Anyone got any idea how much an alternator is and how difficult to fit?

Cheers
John

Heathrowsteve · 18th February 2012, 15:37

Quote:

Originally Posted by john91919

Thanks the info, thought it would be one or the other.

Anyone got any idea how much an alternator is and how difficult to fit?

Cheers
John

Checked on E-bay and found this: £129 Re-Manufactured (or recon)
http://www.ebay.co.uk/itm/LANDROVER-...#ht_551wt_1163

Genuine Rover alternators seem to be about 50 quid dearer. Prob worth checking some local breakers......

HarryM1BYT · 18th February 2012, 15:58

Quote:

Originally Posted by john91919

Thanks the info, thought it would be one or the other.

Anyone got any idea how much an alternator is and how difficult to fit?

Cheers
John

Not easy to fit, but there is an How To somewhere. I also seem to remember someone fixed their old one with a new brush set.

Has someone spilled oil on it, whilst changing the engine filter?

ramdonice · 18th February 2012, 16:45

here you go mate

john91919 · 18th February 2012, 18:47

Hi,

I have just looked at the How to replace the alternator (thanks for the link).
It is beyond my abilities so I am looking for a Rover specialist in the Swansea area.

Not had much luck so far.

The alternator looks fine. I did notice that someone has tried to open the cells in the battery because the tops are chewed where they have taken a screwdriver to them.

Gonna get it all tested on Monday to find out exactly where the fault is.

Will let you know the out come and the cost.

Cheers
John

BRI · 18th February 2012, 18:49

Had the same fault, exchange alternator supplied and fitted £220

john91919 · 18th February 2012, 19:34

Thats better than I expected!

I think this car is gonna cost me some money.

I got it at a good price so mustn't grumble

18th February 2012, 13:56	#1
john91919 Loves to post rover 75 CDTI tourer Join Date: Feb 2012 Location: swansea Posts: 423 Thanks: 0 Thanked 1 Time in 1 Post	battery light coming on intermittantly Hi, The battery light is coming on intermittantly on my 75 2.0 CDT diesel usually at start up. Seems ok when only minimal electrics are being used. When a/c is running and radio etc the light comes on. Checked with a multimeter read about 13.2v with engine running and seemed to drop when revved. Any ideas? Cheers John

18th February 2012, 13:59	#2
oldcarguy Posted a thing or two Rover 75 Conn SE Tourer Join Date: Aug 2011 Location: Driffield Posts: 1,952 Thanks: 27 Thanked 151 Times in 125 Posts	Sounds like alternator, had it years ago on the way to Wales, charging on idle but not at higher revs.

18th February 2012, 15:13	#4
john91919 Loves to post rover 75 CDTI tourer Join Date: Feb 2012 Location: swansea Posts: 423 Thanks: 0 Thanked 1 Time in 1 Post	Thanks the info, thought it would be one or the other. Anyone got any idea how much an alternator is and how difficult to fit? Cheers John

18th February 2012, 16:45	#7
ramdonice Avid contributor 75 Join Date: Aug 2011 Location: LOWESTOFT Posts: 241 Thanks: 0 Thanked 1 Time in 1 Post	here you go mate

18th February 2012, 18:47	#8
john91919 Loves to post rover 75 CDTI tourer Join Date: Feb 2012 Location: swansea Posts: 423 Thanks: 0 Thanked 1 Time in 1 Post	Hi, I have just looked at the How to replace the alternator (thanks for the link). It is beyond my abilities so I am looking for a Rover specialist in the Swansea area. Not had much luck so far. The alternator looks fine. I did notice that someone has tried to open the cells in the battery because the tops are chewed where they have taken a screwdriver to them. Gonna get it all tested on Monday to find out exactly where the fault is. Will let you know the out come and the cost. Cheers John

18th February 2012, 18:49	#9
BRI Avid contributor 75 saloon Join Date: Mar 2009 Location: Middlesbrough Posts: 224 Thanks: 96 Thanked 63 Times in 51 Posts	Had the same fault, exchange alternator supplied and fitted £220

18th February 2012, 19:34	#10
john91919 Loves to post rover 75 CDTI tourer Join Date: Feb 2012 Location: swansea Posts: 423 Thanks: 0 Thanked 1 Time in 1 Post	Thats better than I expected! I think this car is gonna cost me some money. I got it at a good price so mustn't grumble