I have just finished changing my hall sender (or impluse sender as VW call it) to try and solve a mis-fire my car developed about a week after I brought it. I had previously changed the plugs and leads with no difference. I removed the hall sender last weekend and cleaned it, this did make a big difference but the mis-fire was still noticeable. I ordered a new one and fitted it today, I took some photos which are below. First disconnect the battery. Disconnect all the leads then take off this cover with the three hex bolts (circled) It looks a lot like this under that cover. You can s