No Heating in Vauxhall Astra

1. Is it full of coolant?
2. Has it recently been low on coolant?

mrcheerful

The thermostat.

Has this happened at the end of summer when you turned the heat on for the first time? If so it may be that the tap which turns it on is seized in the off position after staying there all summer long. Get someone to operate the control while you check under the bonnet that the lever is moving and not just the cable bending.

Steve

There are several possibilities:-

1). An air lock or blockage in the heater matrix. Have you recently had to top up the coolant level or change the coolant?

2). Does the car have air conditioning? If it does, there is a vacuum controlled valve in the coolant lines to the heater matrix that cuts off flow to the heater when operated. This, or the vacuum control system, could be faulty.

3), The mechanism or cables controlling the position of the hot air flap in the heater box have broken/come adrift.

4). There is a problem with the thermostat that is preventing the engine from warming up correctly. Does the temperature gauge move to its normal (mid) position withina couple of miles of driving?

HTH

Anthony Remove eight from email to reply.

Thanks for your replies.

1) I haven't touched the coolant

2) No Airconditioning

3) No sure about this one will have to take a look

4) The engine gauge is working fine,

Thanks, Chris