Heater / Headlight problems

[Jens]

Recently got myself a Defender 110 TD5 from 2000 and it have some strange problems with the heater and headlight.

The heater have been working on/off (mostly off) but I just figured it was one of the usual Land Rover perks.

I have a Webasto heater too so I barely use the useless one Land Rover put in.

But this morning the headlights stopped working. When I flick the light switch I get the blue high beam light in the dash but no light, and the heater was working again.

I have checked the fuses and relays and they all seems fine and no erosion. I have also check the connections and bulbs in the headlight.

Any ideas?

I have checked allot of threads in here and they all seems to be with different solutions to the same problem

Thanks

Jens

[sandythelandy]

Just my 0.02c but it may be worth looking at the switch itself and or ground leads, grounding problems are common in defenders.

[Jens]

Small update.

The starting is solved, turned out to be dirty plug full of oil that have been leaking from the engine over time.

The light is back on and haven't caused any problems since I got the above cleaned. Weird solution, but guess I shouldn't complain

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But.. Last week it started the act strange again.

This time it seems to go into "limp mode" when I start it up. It won't rev above 1500 or 2000 would be my guess. And it's almost impossible to drive, no power and misfiring. When I try to rev it up it, the ECU gives off a click sound as if it keeps it for getting above 1500

I though I located the problem, because the wires on the sensor assy on the fuel filter was ripped off somehow. I replaced it with a new one, but it didn't seem to make a difference at all. It's still difficult for it to start, little pulling power, and sometimes stalls. etc etc.

There is a tiny bit of oil in the red plug that goes into the ECU, could that be the issue? I know it's a well known problem with the loom leaking, so I should properly get it changed too. It just seems too little to make it a problem, but I could be wrong.

I have checked and cleaned the EGR, it seems to work fine, disconnected the MAS without luck, checked air filter etc.

Is there some faults codes on the ECU that needs to be cleared after I fixed the fuel sensor?

I'm pretty lost, so any advice is much appriciated.