P38 Hevac

luckymark · Jan 28, 2020

I'm hoping someone can point me in the right direction with a Hevac issue on my 96 DSE,
i would try searching but the search function still appears to be out.
When i'm driving along the hevac screen is flickering on and off and the fan stops running when it goes off, at the same time the milometer seems to flicker but not go off, i'm not sure how the Hevac screen could affect the milometer? This seems to happen every couple of minutes like its overheating then resetting, iv'e had the unit out and can't find any bad connections but cleaned them any way with contact cleaner, Any ideas what else to check?

Grrrrrr · Jan 28, 2020

I hope your name holds out.

Fusebox?

RangeRoller dt · Jan 28, 2020

^^^.
Hevac isn’t directly related to milometer but electric is to both

luckymark · Jan 28, 2020

Any where in the fuse box in particular to check? is there a Hevac fuse?

RangeRoller dt · Jan 28, 2020

If you give it a sniff you may smell burning,

Sometimes it’s obvious when you look, other times they seem totally fine but are duff. Check them all and earths and connectors while I was there I would. Check simple stuff first before diving deeper

RangeRoller dt · Jan 28, 2020

Hevac systems are split over a few different fuses like blowers, air con etc

Fuse 1 10A (drivers seat fusebox) also controls instrument pack, clock, radio and centre console.

Datatek · Jan 29, 2020

luckymark said:
I'm hoping someone can point me in the right direction with a Hevac issue on my 96 DSE,
i would try searching but the search function still appears to be out.
When i'm driving along the hevac screen is flickering on and off and the fan stops running when it goes off, at the same time the milometer seems to flicker but not go off, i'm not sure how the Hevac screen could affect the milometer? This seems to happen every couple of minutes like its overheating then resetting, iv'e had the unit out and can't find any bad connections but cleaned them any way with contact cleaner, Any ideas what else to check?

Could be a problem with the under bonnet fuse box, check the heater fan relay & fuses for signs of blued contact pins and for smells of burning.

luckymark · Jan 29, 2020

Thanks for the help, something i noticed today not sure if it means anything, it seems to stop going on and off but still flickers a bit when i had the headlights on, going to try and have a look tomorrow iv'e got to drive to Birmingham on Saturday about 250 miles round trip, so i'm sweating a bit !!

RangeRoller dt · Jan 30, 2020

Grrrrrr said:
I hope your name holds out

+1

brianp38dse · Jan 30, 2020

Just make sure your AA / Rac cover is ok and dont worry , it would save on fuel as well

Grrrrrr · Jan 30, 2020

luckymark said:
Thanks for the help, something i noticed today not sure if it means anything, it seems to stop going on and off but still flickers a bit when i had the headlights on, going to try and have a look tomorrow iv'e got to drive to Birmingham on Saturday about 250 miles round trip, so i'm sweating a bit !!

Welcome to Range Rover ownership. Every journey is an adventure.

kds · Jan 30, 2020

Grrrrrr said:
Welcome to Range Rover ownership. Every journey is an adventure.

And a relive when you arrive.

Salisbury Nick · Jan 30, 2020

There are some proper experts on here and I'm not one fo them, so my advice comes with that caveat - but I had a similar experience in a P38 4.6 and that turned out to be battery problems.

RangeRoller dt · Jan 30, 2020

kds said:
And a relief when the AA lorry arrives.

RangeRoller dt · Feb 2, 2020

I’m putting it in here

https://www.landyzone.co.uk/land-rover/i-know-what-the-fault-is-know.356196/

Wazzajnr · Feb 2, 2020

If the symptoms change with heavy electrical load switched on I'd be looking for bad earth straps.

Datatek · Feb 2, 2020

luckymark said:
Thanks for the help, something i noticed today not sure if it means anything, it seems to stop going on and off but still flickers a bit when i had the headlights on, going to try and have a look tomorrow iv'e got to drive to Birmingham on Saturday about 250 miles round trip, so i'm sweating a bit !!

Could be a sign of impending alternator failure.

kds · Feb 2, 2020

Datatek said:
Could be a sign of impending alternator failure.

Spot on right now he is waiting for breakdown truck see post on anything goes section .

RangeRoller dt · Feb 2, 2020

(The link above)

P38 Hevac

luckymark

Active Member

Grrrrrr

Technician, Bodgit & Scarper Ltd

RangeRoller dt

Well-Sprung Member

luckymark

Active Member

RangeRoller dt

Well-Sprung Member

RangeRoller dt

Well-Sprung Member

Datatek

Well-Known Member

luckymark

Active Member

RangeRoller dt

Well-Sprung Member

brianp38dse

Well-Known Member

Grrrrrr

Technician, Bodgit & Scarper Ltd

kds

Well-Known Member

Salisbury Nick

Well-Known Member

RangeRoller dt

Well-Sprung Member

RangeRoller dt

Well-Sprung Member

Wazzajnr

Well-Known Member

Datatek

Well-Known Member

kds

Well-Known Member

RangeRoller dt

Well-Sprung Member

Similar threads