How can I fix my vauxhall corsa coolant system it keeps boiling up?

I had this problem. The pressure relief valve, integral in the filler cap, had failed so there was no pressure in the system. New cap (ie: valve) solved it. Its easy to check; when the system is hot (after engine has been switched off for 5 minutes) undo the filler cap slowly. If no pressure is released the valve is not working.

Roger
July 2010

dose the fan kick in it might be the fan switch i had the same think now my fan is looped so it comes on as soon as i start the car

nicola
March 2009

I have exactly the same problem........ just had it serviced,
N reg corsa. Thought that would solve it but no. I'm putting in 2 litres of water every 2 days! I'm worried it may be the head gasket. Had that job done on my astra twice at £350 and £400. Please not again!

Jim
May 2008

can i test the tempswitch and how

douglas
February 2006

i changed temp switch,thermostart,but the fin is not coming on on whats the problem.vaxhaull corsa 1.4 lreg

douglas
February 2006

also im thinking the radiator could be damaged or sludged up, check rad, change coolant and flush

Nick
September 2005

find the bleed screw its near the bulk head cos you have got trap air in in the heater matrixs so take your time to bleed all the air out

diesel pump
February 2005