Heater only blows out cold air.

[D1andonlyantman]

Hi. Sorry for making yet another thread but you know what it's like when you get a new car and there are a few problems here and there you're unfamiliar with. I did try and tackle it myself first

Anyway, my fans only blow out cold air. It gets a tad warner once the engine is warm but is still clearly cold. Defogging before and after work ( I work shifts ) is a right pain in the arse, not to mention it's starting to get pretty chilly outside. I checked fuses 1, 5, 25 and 26 after reading a list of what they do and thought one of them might be the issue but they all look fine. Has anyone got any sparky ideas as to why it won't come out hot? I'm pretty much positive I'm using the controls right. Fans on, press red button loads till it says 'hi'.

All ideas appreciated.

[dom]

Does the engine reach normal temp on the gauge? Sounds to me like the thermostat is stuck open.

[D1andonlyantman]

Yeah I think so. Gets up into the 90s if I remember rightly. Is the thermostat easy to check/replace?

[mcgee9t2]

to check it remove it and place in hot water and see if it opens, if your removing it you might aswell replace it though and then its done. to remove it, drain the rad and coolant system, theres two bolts to undo on the stat housing remove the pipe and pop the stat out, insert new stat and reverse proceedure, theres a guide in the how too.

First time its a right PITA, but as with everything once youve done it once its a breeze the next time, first time it took me a hour and a half in the middle of the day, second time it took me 20 mins at 10pm at night.

[D1andonlyantman]

Ok cool. Where do you guys get all your little bits like this or is it a eurocarparts jobbie?

Thanks.

[mcgee9t2]

Most people go VW. think its around £24 for the Stat, + £10 or so for the coolant.

[D1andonlyantman]

Ok cool. I'm getting an oil change done soon so will get it all done at the same time. Cheers for the heads up.

[dom]

If the gauge hits 90 then it's unlikely to be the stat, it could be the heater matrix

[D1andonlyantman]

That's what I was thinking. If the thermostat was stuck open then wouldn't it constantly be trying to cool with the fan going?

[mcgee9t2]

ope if the stat was stuck open the water from the radiator would constantly be running around the engine in turn making the engine hardly ever hit 90 degrees.