Thread: P38 Electrical weird stuff- does it ever end?

My immediate reaction is intermittent faulty earth point, or perhaps cracked circuit board in the fuse box or faulty relays.. do any of the yellow relays have brown marks on them? It's a sign of overheating and they may need to be replaced... this is a particular issue with relays which feed the fans....
Let's know how you progress?

My guess, like Hoges would also be a faulty earth.
Gary

Try earths for a really flukey fix, but i doubt it. If your lucky it will be burnt and dodgy relays.

The actual boards knackered if you are unlucky. Don't mean to mozz you, but from your description, that's the one I am tipping.

I'd be testing or replacing all the relays for a start, they can cause all sorts of strange goings on when they start to fail.
They are interchangeable, yellow for yellow, green for green, maybe try swapping suspect ones for non vital system ones (like a/c or fan relay) and see what happens.
The diagram is inside the fuse box lid to show which relay does what.
As DT-P38 said, it may be the relay/fuse box circuit board, which would explain intermittent weirdness.
You can buy a new relay fuse box like this:
LAND ROVER RELAY FUSEBOX FUSE BOX COMPARTMENT RANGE P38 99-02 YQE103410 OEM NEW | eBay

Hope that is of some help!

What the other guys said, plus...
Reboot the BeCM and other ECU's by disconnecting the battery for a couple of minutes. Used to work on my old 1995 P38 when it started doing weird electrical stuff every few months.

Remember to leave a door open and have the key in your pocket when you do this just in case it decides to lock itself when you reconnect the battery.

You will also need to re-set windows, sunroof, seat memories and perhaps radio.

Cheers, Paul.

Now we do diving for the earth pints! Oh what fun, hey?
New Fuse box, new relays all done last year but the earth points for this circuit have been avoided due to them being well hidden.....

Thanks fellas,
Shirl.....