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Hi guys can anyone help getting error code pc16c7, what is this as shows heater support but only happens when engine cold its coming up with engine management light so can someone shed some light on this matter. The heater pump had been changed from a breakering audi a3 with exact same part...

Hi guys so i changed my radiator on a 68 plate golf which has only done 18k miles due to a leak. Now after the change the AC is not cold at all and throughing fault code pc16c7. I have no idea what this is. Can someone shed some light on this matter for me. The ac had been working fine...

Cleared the air let it run with cap off and it took the coolant then topped it up and now just holding it perfect mate

All sorted mate had been heater matrix , but there was no physical leak just devorting coolant like nothing.

When we took the old one off it was rusty from inside you could see and then when cleaning out you could see the rust it had developed over time

All sorted bud it was heater matrix and did it all myself in under 2 hours and literally bought the new heater matrix denso for £72.00. Its not even hard just have to fiddle about with it.

Hi guys thanks for your replies got it checked and heater core is clogged. When heaters are on max its loosing coolant whilst driving rapidly. Overnight it looses all coolant and using g13 coolant. Its confirmed as heater matrix there is no dampness on or near the heater core itself. Thanks...

Yeah mate so overnight completely empty then have to refil in morning

No overheating bud at all , atill on 90 mate , yeah thats fine have a good shift mate

There is no visable leaks bud do you think its worth changing waterpuml

Thank you for your speedy reply, themostat had been checked and no leaks at all but tbh i don't think this bad been changed miles are 146k now , it's had one timing belt from old owner at 131k but not sure if he had changed waterpump tbh. But thee garage are saying waterpump may have gone...

Can anyone shine some light on this matter been to 3 different garages who cant find a leak.

Hi guys need some help regarding a problem i am having. So when my engine on and driving does not loose coolant but as soon as switch off overnight coolant disappears. There is no visible leaks. I have changed the secondary pump due to engine managment light had appeared but this has not...