Our treasure kept stopping but then started straight away until it didn't. We checked fuel, non coming through. We've now changed both fuel pumps, replaced a few hoses while we were at it and two relays, one under the bonnet and white one behind ashtray, hoped we were ready to go but when we try to start it's trying to turn over but very slowly like the battery is flat. We can charge the battery but wondered if there is an immobiliser on this model? Manual doesn't mention one. We don't have a key fob just a key. Any thoughts please?