First off Thank you to anyone who reads this & tries to help.
Problem is the Heaters don’t work. The car is a 2002 S3 8L
I’ve flushed the coolant system both ways with the thermostat removed. Then flushed the heater matrix the same.
Result is a good steady flow of clean water through the engine / radiator & heater matrix.
I then reassembled including fitting a new thermostat & new coolant flange (gearbox side of cylinder head)
I have a good continuous flow coming back to the header tank & can’t find any obvious water leaks. The car gets up to running temp in around 5mins temperature gauge sits perfect at 90degree’s car never over heats it starts / runs & idles pretty much spot-on.
However as soon as it’s up to running temp the radiator top pipe (RHS when looking from front of car) is solid. As if there’s a proper air lock.
I also can’t get any sustained heat from the heater. Once the car’s at operating temperature I can turn heaters on but I only get warm air for around 5 / 10 seconds then the blow stone cold.
I’ve done the heater module test on VCDS & no faults reported. This is now doing my head in as it’s like driving a fast fridge in this weather.
Any help in sorting this would be much appreciated.
Problem is the Heaters don’t work. The car is a 2002 S3 8L
I’ve flushed the coolant system both ways with the thermostat removed. Then flushed the heater matrix the same.
Result is a good steady flow of clean water through the engine / radiator & heater matrix.
I then reassembled including fitting a new thermostat & new coolant flange (gearbox side of cylinder head)
I have a good continuous flow coming back to the header tank & can’t find any obvious water leaks. The car gets up to running temp in around 5mins temperature gauge sits perfect at 90degree’s car never over heats it starts / runs & idles pretty much spot-on.
However as soon as it’s up to running temp the radiator top pipe (RHS when looking from front of car) is solid. As if there’s a proper air lock.
I also can’t get any sustained heat from the heater. Once the car’s at operating temperature I can turn heaters on but I only get warm air for around 5 / 10 seconds then the blow stone cold.
I’ve done the heater module test on VCDS & no faults reported. This is now doing my head in as it’s like driving a fast fridge in this weather.
Any help in sorting this would be much appreciated.