No hot air

[ddgriff]

I have an early Mk1, my heater has always worked perfectly but for some reason it is now only pumping out cold air even when the engine temp is at 90. Any ideas?

[stevieeg]

Start with having a look at the heater ECU box for a charred earth pin. Box is in the passenger side foot-well.

[sprange67]

Have you checked your water level?? Too low = no heat

[ddgriff]

Thanks guys, looks like the ECU

[stevieeg]

Did cleaning the pin fix it?

I tried that last time but still had issues with continuity. There are two earths in the connector though so I did a cheeky patch across and I was in business again.