Ford Fiesta - Ford Fiesta IV heater not working

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Thu 11 Nov 2010 08:52
Ford Fiesta - Ford Fiesta IV heater not working - jimbokt

Hi,

Firstly I'd like to thank everyone for helping me fix those little things. I regularly visit Honest John when my car's poorly and the advice has helped every time!

I thought I'd join Honest John and post this message as, despite reviewing previous posts and trying various things I'm still up the creek!

My Ford Fiesta mk IV (2000) heater is blowing out cold air. I've replaced the heater control value and flushed the heater matrix. Both the inlet and outlet pipes to the matrix are hot.

Can anyone help?

Many thanks!

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Thu 11 Nov 2010 18:27
Ford Fiesta - Ford Fiesta IV heater not working - over30

Does the engine reach normal operating temperature in a reasonable amount of time? If not, then the thermostat could be at fault. Failing that, you might have air trapped in the pipes from renewing the heater valve, try running the engine at idle with the expansion cap off, to remove any trapped air.

I have just had the exact same problem with a fiesta freestyle.

I changed the 'thermostat' and the 'heater control valve', however, It took a couple of days before the heater started working after I had changed the valve. It was necessary to bleed air out on the day I changed the valve, then a couple of days later I had to bleed some more air out.

After I had bled the air out the 2nd time, the heater suddenly started working, and is now hotter than it ever was!

Edited by over30 on 11/11/2010 at 18:32

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Wed 17 Nov 2010 12:08
Ford Fiesta - Ford Fiesta IV heater not working - jimbokt

I managed to sort the problem out. The replacement heater control valve was faulty as well!

It just goes to show that - when it comes to repairs - you should always buy brand new replacements.

Thanks for your help though.

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