is an easy job to do, couple of star bolts, 1 top and 1 bottom.
look on left hand side of the engine, you will have to pipes goin into the thermostat, one big to the rad, one small which goes to the top of the expansion tank and a sensor.
Unplug the sensor and take off the small pipe, you should easily be able to take the thermostat off with out having to take off the large pipe, take out the 2 bolts and pull away the housing.
Ypu will get like a mini toilet roll tube with your new thermostat, this you push down on to the thermostat and turn to get the old one out and put the new one in.
The gaskets nowadays are rubber and tbh the ones that come with the new thermostat are a pig as you need to heat and stretch them to fit into the groove. Personally unless the old gasket looks cracked and ready to fall apart i wouldnt bother replacing, didnt with my astra the other week when doin the head gasket. Just smother the grease you get with the thermstat round the old gasket and put back together.
Dont forget to put a litre of antifreeze in 1st when topping up your coolant when done.
Run the car, let the fan kick in ... Job done and hopefully a hot heater
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Saturday, 27 November 2010