Member Since: 31 Aug 2010
Location: retford'ish
Posts: 2210
does this indicate a battery issue?
Hi,
the starting has not been the best in the colder weather and checks show the glowplugs need replacing which is planned before the end of the month, while I have had the multimeter out I have also been checking the battery voltage,
via the tow socket and D3 sleeping I get between 12.3 and 12.5 over a number of days
a borrowed clamp meter showed 25ma after the 30min shut down period so within spec
took a few attempts to start today at 4 degrees and I had the IId connected
I took a couple of screen shots of the starting voltage,
first shows a peak drop of 2.8V
for the second a put a jump lead from battery neg to engine block to see if earth lead could be an issue
that start gave a peak drop of 3.3V
the battery was new shortly before I bought the D3 (so I was told!) so only 12-14 months old, can find no date codes though.
Could the volts drop on starting indicate a dodge cell in the battery
Member Since: 07 Sep 2015
Location: Oxford
Posts: 1065
How old is the battery?
Sorry - seen. should be Ok but even 14 months with those symptoms....Jim
2014 Discovery 4 XXV SDV6 Causeway Grey
2016 Discovery 4 HSE Lux SDV6 Loire Blue - now gone
11th Mar 2023 11:13 pm
aja4x4
Member Since: 14 Apr 2019
Location: Westbury
Posts: 2459
Taking into account the voltage drop you will get at the tow socket i would say you battery voltages are good.
Extended cranking will cause a significant voltage drop i would get the glow plugs replaced and see how it goes.Andrew
D3 2.7tdv6 2005
D4 3.0 SDV6 Commercial died and gone to LR heaven
D5 3.0 SDV6 HSE
12th Mar 2023 7:53 am
eightfoot
Member Since: 12 Apr 2015
Location: sunny essex
Posts: 762
how often do you do a topup charge ? do you do many short/local runs ?
usually se 12.6-12.8 on mineplease excuse any grammer/punctuation mistakes,i'm thick,thankyou
current vehicles 2005 d3 2013 d4
12th Mar 2023 12:42 pm
riverblanche
Member Since: 31 Aug 2010
Location: retford'ish
Posts: 2210
Hi,
I will wait until after the GP change over and check again
it Never does short trips,
might get used once a week then its always a decent run 80 miles maybe,
day before these screen shots just back from 126 mile run
and use a smart charger if its blagged a place in the garage
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