My daughters 2008 GP displays all the symptoms in similar posts so I booked a day off to check the battery and clean up all earthing points. Battery was original so installed a new one, removed all engine bay earth points and fuse box, cleaned the terminals and posts - refitted and protected with petroleum jelly / hmp grease as required. All seemed well and I at least got the car started (thought it may have originally been the starter motor), however the "clicking" noise from the top of the engine has returned and it appears to be coming through one of the relays loudest - so swapped relays, didn't work, the noise remains and sounds like the injectors or fuel pump is trying to reset. When it does start it runs really "rich" and shuts off after a couple of minutes. I am getting a combination of dash warning lights, ranging from all of them with the temp gauge going up and down to just the steering light on, but when the car does start all appears normal, I have also tried using a different key with no success. I have checked the wiring to and from various sensors all to no avail. Can anyone help please, I have got this far being guided by the really useful posts on this site but short of spending the big bucks on a replacement engine management system or sensors I am at a loss!