astra 1.6petrol (97-preg) wont start as if battery not connected. have replaced battery & worked for 5 minutes then replaced alternator & worked for another 5 minutes, it just cuts out, buttery light comes on & wont start again. now its completely drained as if no power at all, checked all wires, fuses & connections but cant see anything wrong, any help gratefully received, thanks in advance! - (JHoltWeaver@aol.com)

Jon Holt-Weaver, February 2005

Put a volt meter onto your battery you should have 12v +. These cars have immobilisers as standard..any immobiliser can be a t**t. get ur key fob checked out. Its possible that u need ur key re-programmed.

Not a mechanic, December 2006