At this point I was roughly hours and a quarter-hour into the diagnosis of this large vehicle access control. If you loved this post and you would like to get additional information concerning parking payment machine kindly check out the webpage. It's been my practice to avoid after an hour, re-evaluate and brainstorm or research after perform correctly. My shop had on the web access with repair data base and additionally, we had hard copies of repair tracking information (I would suggest both for shop!) and therefore i spent your time researching possible causes for this symptom. Excessive cause that displayed the actual symptoms was that the distributor shaft had become "magnetized" and was interfering with the Ignition Modules performance in controlling engine clocking.