right my secondery water pump stoped working so i checked all the fuses and they where ok followed the quick fix guide on another thread and got it to work via a 12v battery but when i put it back in the car still nothing so i took the plug out of the pump and tested the plug with a volts meter and the volts jump to 12v every 9 -10 seconds does anybody know what this is , i also need a new engine cooling temp sensor will this be the cause of the volts jumping is is it a diffrent fault hope u can help cheers
