HVAC not fully cold (no air conditioning)

[Succentor]

I realised today that full cold on my HVAC isn’t actually cold - it’s just a little warm. NB I don’t have aircon (not many UK spec TJs have it, why bother when the roof comes off?)

The heat selector knob feels quite easy to turn - maybe too much so. Full hot is just fine, though.

Is this normal or is there a problem developing?

 

[lBasket]

I realised today that full cold on my HVAC isn’t actually cold - it’s just a little warm. NB I don’t have aircon (not many UK spec TJs have it, why bother when the roof comes off?)

The heat selector knob feels quite easy to turn - maybe too much so. Full hot is just fine, though.

Is this normal or is there a problem developing?

How would it be cold if you don't have AC

 

[lBasket]

Sounds like your fine I have no AC so the cold section just gets me hot engine air

 

[Succentor]

You could be right, the 'cold' air intake isn’t that far from the engine!

 

[Succentor]

How would it be cold if you don't have AC

Well, it can be warmer than the outside air, and it was…

 

[lBasket]

You could be right, the 'cold' air intake isn’t that far from the engine!

That air is going into the engine not your HVAC haha

Well, it can be warmer than the outside air, and it was…

Yeah that's just heat from the engine I think. I've never had a no-AC car put out air that wasn't hotter than ambient

 

[Rubiconned]

NB I don’t have aircon

We yanks call it AC.
Air Con was a movie with Nicholas Cage

 

[DuckNut]

We yanks call it AC.
Air Con was a movie with Nicholas Cage

That was Con-Air.

Another possible cause is the foam gasket around the diverter flaps has failed and air is passing through. Turn the fan on high, flip the diverter lever on the dash back and forth, look for little brown foam pieces that get blown out.

 

[Chris]

If you don't have A/C it isn't going to be cold unless it's freezing outside.

 

[TJ4Jim]

I realised today that full cold on my HVAC isn’t actually cold - it’s just a little warm. NB I don’t have aircon (not many UK spec TJs have it, why bother when the roof comes off?)

The heat selector knob feels quite easy to turn - maybe too much so. Full hot is just fine, though.

Is this normal or is there a problem developing?

Pop the Knob off the panel to make sure it's not cracked on the backside. They do that a lot..

 

[Succentor]

Thanks all. A couple of things to try there, just to check all is OK

 

[hear]

Thanks all. A couple of things to try there, just to check all is OK

Your mind is going to be blown when you discover that water is wet.