fuse box or becm or even ecu

right got my dse back today landrover today they say its the becm is knackered and quoted £1000, i been told it could be fuse box, the problem is the engine light dont come on and it wont start, when it was starting (not often) it came up gearbox fault and stalled few times, i took fuse box apart and relay 7 panel is slightly burnt and smells a little, i only dismanttled to where it needs un-soldering would this make the engine light stay off and not smell, other things the fusebox works seem to be ok, could it even be ecu, any help anyone

sounds like fuse box you can pick them on ebay for about £40 so worth trying before going any further

Try the fusebox first, or if you want the BECM checking out, send me a PM or Andy.R

cheers people its only £130 for new fuse box so ill do that at least its done then

skippy22 said:

cheers people its only £130 for new fuse box so ill do that at least its done then

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listen to what irishrover tells you,he is the mighty wizard when it comes to range rover p38s,he can also sort out your BECM if its knackered.

pm sent thanks everyone

im fitting new fuse box tom would any of the old relays be knackered by the old fuse box

Doubt it...most of them are interchangeable (Same colour and size) so that's handy for troubleshooting.

By the way have sent you a PM:tea::smokin:

would any stop engine light coming on if so ill make sure when its done that a new one is in there

There are four relays for diesel engine control...Power Supply, Glow Plugs, Starter Motor, Fuel Pump. Twoare located in the engine bay fuse box and two in the engine ECU. The engine check light is activated by the BECM via an input from the engine ECU..Stupid question..have you checked the bulb, but that wouldn't cause non starting if it was blown.

Got your PM and replied to it..am waiting for your reply

i take it you mean engine light bulb, no i havnt but it was coming on sometimes, i replaced glow plug relay what number are the 2 fuses in box

i did notice all the big fuses were abit crappy aswell, ill see tom wont i

Fuses are F37 (20A),F39 (10A) & MF2 (30A).

Is the fuse box coming with the relays and fuses fitted or is it the bare unit?

came with just fuses, i just fitted it but no different, there is power to the three wires on becm anyone know what might be another prob why engine light isnt on aand wont start other that becm

Is the starter motor turning over?
Any messages or bleeps when you turn the key to start position?

yeah turning over, its just saying the windows need setting but still no glow plug or engine light

it seems to have lost contact with the key, and there is an imobiliser fob seperate like someone has put new imob on it but cant see that anywhere either, is there a way of trying some sort of bypass of any possible imobs

Well, that just leaves the BECM to engine ECU "Handshake" or an engine ECU fault. The BECM is the most probable first, and hopefully final step. Is the fuel pump cutting in?
Another thing to check is the fuel cut off impact switch behind the drivers side panel in the footwell

The immobiliser on the P38 is very much "Cast Iron" and cannot be overcome by "Hot wiring"
It not only immobilises the car but in most cases, alarms the BECM which is non reversible unless you have the special software.
Sent you a PM