Battery flat after 330 mile run - Page 2

danny2222 · 19th June 2013, 10:29

Quote:

Originally Posted by jonathan63

Had the battery on charge for an hour and it starts now.
Ive left it to charge fully.

It just seems strange that after a long run the battery should be flat.

One thing i noticed though, when driving home; the fan seemed to be on a lot

.

Im wondering if the resistor had stuck open????????

Its not running now though.

Fan running ? checked your Radiator level, this ois of courde nat a battery problem, just mentioned it.

Trophy Blue Tourer · 19th June 2013, 11:49

No need for a multi-meter just to check battery volts and alternator running volts!

You can use the OBD item 9 from memory!!

See here for instructions on how to activate!

http://www.the75andztclub.co.uk/foru...3A+diagnostics

Item 9 says battery voltage so follow the instructions to activate in ignition switch position 2 with out starting the engine then you will have the battery voltage then start up with out turning the key backwards and it will indicate the voltage the alternator is putting out - a slight rev up to approx 1500revs is sometimes needed to kick the alternator in to life!

HTH?

Andy

samurai · 19th June 2013, 21:24

Have you checked the electrolyte in the battery , if its low top it up , if your alternators charging , then I would suggest the battery if its topped up just above the plates , take to a battery specialist ask them to do a charging check , and a discharge check , which means putting an ammeter in series with battery lead .

19th June 2013, 11:49	#12
Trophy Blue Tourer Gets stuck in MG ZT-T Trophy Blue CDTI Join Date: Feb 2011 Location: Milton Keynes Posts: 883 Thanks: 11 Thanked 25 Times in 18 Posts	No need for a multi-meter just to check battery volts and alternator running volts! You can use the OBD item 9 from memory!! See here for instructions on how to activate! http://www.the75andztclub.co.uk/foru...3A+diagnostics Item 9 says battery voltage so follow the instructions to activate in ignition switch position 2 with out starting the engine then you will have the battery voltage then start up with out turning the key backwards and it will indicate the voltage the alternator is putting out - a slight rev up to approx 1500revs is sometimes needed to kick the alternator in to life! HTH? Andy

19th June 2013, 21:24	#13
samurai Regular poster Rover75 saloon Join Date: Dec 2010 Location: Leeds Posts: 93 Thanks: 0 Thanked 0 Times in 0 Posts	Have you checked the electrolyte in the battery , if its low top it up , if your alternators charging , then I would suggest the battery if its topped up just above the plates , take to a battery specialist ask them to do a charging check , and a discharge check , which means putting an ammeter in series with battery lead .