Heater Control Valve (Ford Puma)

Camalot · 23 Oct 2010 at 17:43

Was going down the A5 and noticed my temperature gauge was at boiling point

I started to slow down and park up on the side of the road. At this point there was a little smoke but not much. I had a look and noticed that the pipe that goes into the HCV had snapped, empting all the coolant out the entire car :eek:

I went and bought a ford fiesta HCV as im led to believe the puma / ka and fiesta share a lot of the same bits. I fitted the HCV on road side and filled it up with water, all was fine. Drove it home and temp stayed down.

The issue i now have is the heaters are stuck on hot, and the air con wont come on.

Now is this down to an incorrect HCV, as my google skills tell me i have the right part. Or could this be due to something more?

Thanks for any advice!

Liquidfox · 23 Oct 2010 at 17:45

Chances are if your gauge was at max, you've already done some damage to the engine, may want to get it checked out.

Camalot · 23 Oct 2010 at 17:51

Hmmm, as soon as i seen it shoot up i pulled over.

I'm worried now

Shimmyhill · 23 Oct 2010 at 18:24

Common part so will be right one, changed mine as a precaution.

If its stuck on hot its either not working or got an airlock - are you 100% its plumbed up correctly and electrical connector on ?

Camalot · 23 Oct 2010 at 18:27

Shimmyhill said:
Common part so will be right one, changed mine as a precaution.

If its stuck on hot its either not working or got an airlock - are you 100% its plumbed up correctly and electrical connector on ?

Fitted one before on a fiesta and all worked fine.

I'll refit it tomorrow just to make sure its all connected fully.

How do i get rid of air lock?

Shimmyhill · 23 Oct 2010 at 18:30

I think you just run the engine for a while with the coolant bottle lid off - certainly recall doing this when i did mine.

Running hot all the time sounds like its in bypass mode hence wondering if its plumbed in properly and/or the electrical connector isnt on forcing it into the open mode.

Biohazard · 23 Oct 2010 at 18:30

Liquidfox said:
Chances are if your gauge was at max, you've already done some damage to the engine, may want to get it checked out.

and what will they look for?

Biohazard · 23 Oct 2010 at 18:32

Camalot said:
How do i get rid of air lock?

follow haynes manual, it differs on car.

it all depends on if you filled it up the right way, do it the wrong way you can riddle the system with air

Camalot · 23 Oct 2010 at 19:21

Biohazard said:
follow haynes manual, it differs on car.

it all depends on if you filled it up the right way, do it the wrong way you can riddle the system with air

I've probably done this

Iceman · 23 Oct 2010 at 21:54

To be fair if it was an air lock heaters would not be stuck on hot but the other way round.
Heaters stuck on hot are normally how you find out these have broke.

Camalot · 24 Oct 2010 at 10:32

Think its worth me buying another?