Member Since: 04 Jan 2017
Location: Kent
Posts: 25
Lights pulsing/flickering HDC
Evening all,
Had the "HDC fault" and still have flickering/pulsing lights, after hours of forum searching and working my way through possible problems I'm now looking at pulling the alternator.
The battery was original but still showing around 12.5v cold and alternator putting out 15.4 cold and sitting at 14.2 there after even under full load.
fitted a new exide 017 and that sorted the hdc
Still have the flickering lights, sometimes throughout the whole journey other times just for the first 5mins or so. Have checked the body earth and read for fault codes, just the one (ventilation flap)
Higher rpm tends to smooth the pulsing, I'm thinking that the alternator has a bad diode and this is causing the fluctuation.
Only had the motor a week so unsure of alternator history etc, any thoughts would be very much appreciated.
Thanks
Nick
13th Jan 2017 8:59 pm
Nickbys
Member Since: 04 Jan 2017
Location: Kent
Posts: 25
Should add that I've also changed all front bulbs and have d4 led rears.
Also did a hard reset to no avail.
13th Jan 2017 9:02 pm
stephenevans
Member Since: 01 Nov 2014
Location: Warwickshire
Posts: 40
This started to happen to me about 4 weeks before my battery let me down. It turned out to be a failing alternator that killed the battery.
Alternator and battery replaced and not a single flicker since.
I used a Bosch autocenter to diagnose and do the work. Great service.Transmission flush by Geoff.
EGR blanked
New oil pump & cambelt
14th Jan 2017 12:25 am
mz mini
Member Since: 02 Jul 2014
Location: Sunny Devon
Posts: 1759
As last post alternator failing killed battery, new alternator no more flickering good luckLand Rover 90 - deceased
Discovery 3 - deceased
Discovery 4 2013
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14th Jan 2017 9:20 am
Nickbys
Member Since: 04 Jan 2017
Location: Kent
Posts: 25
Cheers Fellas,
swapped it out this morning for a Denso and now all sorted, removed a newish looking Lucas Reman which are obv not up to the job
for anyone having trouble removing the fan without the tool
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