Well thanks for your thoughts, I am used to fuel gauges not working but thought the P38 one might be more reliable. Suppose it could be the sender unit playing up and not having the MAP plug in might have been a coincidence. I'll look into the ECU's but no holding out much hope understanding the...

Well it does seem strange because I've recently popped both the plugs back into the fuel filter housing and now fuel gauge is conpletely screwed again. Wondering if the MAP sensor is the culprit but can't think how, doesn't seem like a short circuit, more like logic is mixed up. Is the fuel...

Fuel gauge tempermental ... Have a P38 2.5 DSE and ran out of fuel the other day after the gauge decided not to tell me I was low. Now since then I haven't been trusting it and also wanted to change the fuel filter last night because after running low assumed that changing it was a sensible...