Scirocco Register

All dials, sliders and buttons feel like they're functioning perfectly with no snapped cables or anything, and the car's warming up fine but there's no heat coming through. Has something that needs to move to allow the heat through frozen stuck? I can't figure it out. If the temp level slider was loose, I'd assume the cable had snapped or come free but it feels as solid as always. My window's iced up and I can't de-mist, let alone melt the ice! By the way, I don't have an air con model. It's a mk2 carb, 1990.

Hmmm...

How far have you driven it? Does it seem to warm up almost too quickly? And get too hot?

Could be you have part of the cooling system frozen solid? Possibly just heater matrix if your 'lucky'?

No, warms up as normal but doesn't want to transfer that heat to the interior, just cold air. Everything else is fine. I'm hoping something's stuck and it will be released once the weather warms up a bit, but I've no idea if I'm likely to be proven correct or not.

Have you bled the system recently as its the highest point so all trapped air goes there..

Get the engine warmed up, smack the heater on full blast and look under the bonnet, under the scuttle cover on top of the heater there is a blue or white plastic knob, twist it slowly until water squirts out and all air has been removed...

I'd take a shot at your anti-freeze level isn't right, therefor the water in your system has frozen.

Alex

MrP wrote: under the scuttle cover on top of the heater there is a blue or white plastic knob, twist it slowly until water squirts out and all air has been removed...

PeteGLi wrote:

MrP wrote: under the scuttle cover on top of the heater there is a blue or white plastic knob, twist it slowly until water squirts out and all air has been removed...

Its how you bleed the water system.. I don't see what's hard to understand.. In the scuttle tray, where the heater fan is, there is a bleed valve. If there is air in the system its how you remove it. Simples.

Unless i'm being a retard and thinking about mk2 polo's?

Thanks for all that, boys. Very helpful. I'll check it all today and report my findings. Never knew about that bleeding thing. Makes total sense that they'd have such a feature, especially with the expansion tank being lower than ideal on a Scirocco.

MrP wrote:

PeteGLi wrote:

MrP wrote: under the scuttle cover on top of the heater there is a blue or white plastic knob, twist it slowly until water squirts out and all air has been removed...

Its how you bleed the water system.. I don't see what's hard to understand.. In the scuttle tray, where the heater fan is, there is a bleed valve. If there is air in the system its how you remove it. Simples.

Unless i'm being a retard and thinking about mk2 polo's?

Must have been thinking about the Mk2 polos

Heating layout on the Scirocco is 'simples' - one hose from the side of the cylinder head through the bulkhead into the heater matrix, other hose from the heater matrix back through the bulklhead, then through the control valve in the engine bay to the metal water pipe.

No bleed points anywhere in the system.

As Risocco (Alex) says check your antifreeze concentration. Also, can you open and close the valve in the engine bay by hand?

You have checked that there's enough water in the system?

PeteGLi wrote:

MrP wrote:

PeteGLi wrote:

MrP wrote: under the scuttle cover on top of the heater there is a blue or white plastic knob, twist it slowly until water squirts out and all air has been removed...

Its how you bleed the water system.. I don't see what's hard to understand.. In the scuttle tray, where the heater fan is, there is a bleed valve. If there is air in the system its how you remove it. Simples.

Unless i'm being a retard and thinking about mk2 polo's?

Must have been thinking about the Mk2 polos

Heating layout on the Scirocco is 'simples' - one hose from the side of the cylinder head through the bulkhead into the heater matrix, other hose from the heater matrix back through the bulklhead, then through the control valve in the engine bay to the metal water pipe.

No bleed points anywhere in the system.

As Risocco (Alex) says check your antifreeze concentration. Also, can you open and close the valve in the engine bay by hand?

Ha Ha I'm Simples!! Sorry guys for the worng info

PeteGLi wrote:Also, can you open and close the valve in the engine bay by hand?

What valve in the engine bay? Where's that and what does it look like? Cheers.

Junglist wrote:

PeteGLi wrote:Also, can you open and close the valve in the engine bay by hand?

What valve in the engine bay? Where's that and what does it look like? Cheers.

Follow the metal water pipe round the side of the engine towards the bulkhead. In the hose between the end of the metal pipe and the bulkhead you will find the valve - attached to it is the cable from the slider control. You can't miss it.

oH, THAT THING. rIGHT, YEAH i KNOW WHAT YOU MEAN. Whoops! had capslock on again!

as petegli said the cable had come off on mine so it was stuck on cold and had no heating for a week then looked attached back on and hey persto heat