I'm new to this site, but will be posting regularly from now on. I've got a Calibra 16v Ecotec. Engine management light has been on and off for last few weeks. Now permantly on. So i read off fault codes : 19 - RPM Crank Sensor. Tried removing old sensor to clean it. Re-fitted after cleaning, but before reconnecting sensor, tried to start engine. Engine turned over, but would not fire. Reconnected sensor, still wouldn't fire. Tried disconecting battery (to reset ECU). Now engine wouldn't turn over!! Left for a while, fiddled with CAT 1 alarm. Engine then started to turn, but still not fire. Tried Jump start, but same thing happened. I'm now out of ideas. Could the Fuel Pump Relay have gone too?
Any advice appreciated.