So, my 'daughters car' (the only one I really drive) a Vauxhall Corsa 1.0 has developed a fault. When driving it suddenly stops. Then won't start again for 5-15 minutes. It's one of these shitty intermittent faults. Put it through the MOT and it passed... mind you it stopped on the ramp and it took 10 minutes to start again. So with 12 months ticket it's worth fixing. Investigation suggests it isn't sparking or injecting fuel when in the fault state. So this is (probably) either the crankshaft sensor, the cam sensor or the ecu. Crankshaft sensor's cheapest so hope it's this... Bought one, on eBay, and tried to change it. Fuck it's not a socket, it's a reverse torx bolt. Oh well, use a socket. No... they won't fit. So I need a spanner. A quick search and Halfords seem to sell them. Managed to reserve a set of four in one of their Bristol stores. Turned up and they were waiting for me. I'm quite happy to pay the extra if I"m honest, the online search and discovery saved me hours.