Ok i am really confused now!!!!

There has been no change with the gauge. I noticed the other day that i had a fuse missing from the fuse box in the engine bay. After checking it is for the EEC module. I fit one and no change to the car in any way. I did this Thursday night.

So Friday evening after driving the car to and from work i jump in to pick my some up, start it up and while i got myself sorted a heared a loud thud, like something had been dropped on the roof. I jump out look fround the car but cant seee anything so think nothing of it.

As i am driving the gauge slowly starts falling and stops at half a tank and stays there for a little while then very slowly creeps up to three quarters!!

After a 30 mile trip i leave it stood for about an hour before the journy home. Start it up and sit on half a tank again. I put £20 worth of petrol in it but the needle does not move. So now it reads half a tank but does move very slightly over half a tank but then back down.

I am so confused now.