Hi, I am having a problem with my '91 Range Rover cutting out, it will start and you can hold the revs with the throttle, when you release the throttle it will idle for approx 30 seconds and then cuts out. I have replaced the ecu water temp sensor and cleaned out the idle air valve with no change. In the middle of this the starter motor packed up, this has now been changed as well. I have done all the ecu checks in the manual and all the readings are as they should be. Has anyone got any ideas what could be causing this. Thanks. Matt.