Thread: Right hand aircon vent not as cold.

Could be a gap in the ventilation input between the inlet on the guard and the section into the dash. There is a thread about this. Run your hand down and feel for a gap.
Ventilation piping gap Puma Defender

I don't know how the Puma's work but on the TD5 there are two vent flaps (one drivers, one passengers) that allow fresh air from the cowl/ heater to be channelled through the air conditioner vents as opposed to going up to the windscreen vents.
If only one of these seals isn't sealing properly and your main heater vent isn't sealing you'd be getting fresh air mixed with one side of the air con cold air but not the other.
I'm sure the detail is different but just a theory.
Good luck

Originally Posted by Mark130

I don't know how the Puma's work but on the TD5 there are two vent flaps (one drivers, one passengers) that allow fresh air from the cowl/ heater to be channelled through the air conditioner vents as opposed to going up to the windscreen vents.
If only one of these seals isn't sealing properly and your main heater vent isn't sealing you'd be getting fresh air mixed with one side of the air con cold air but not the other.
I'm sure the detail is different but just a theory.
Good luck

This is sounding more likely, I have wrapped the air box Gap in the engine bay with some leftover dynamat, there was a small Gap but it is sealed now. I put the fan on full and moved the vent to external and the driver's side was warmer than the passenger side. So the left is pulling in external air and the right is getting warm air. Now I just need to find out where it is getting in, think I'm going to have to pull the dash off.

Now I'm wondering if we have the same problem.

I'm getting up close and personal with my heater as well. I've always lived in the warmth so I've never paid it any attention at all.
I never even really knew what the controls did.
I've found my main vent flap seal had completely perished - nothing left of it.
Unless it was 25mm thick at the top the flap wasn't adjusted properly so wasn't close to sealing. I'm still trying to work out that adjustment..
My weep hole in my inlet from cowl was totally blocked with dirt and old decayed Jacaranda leaves)
My blower isn't working. haven't tried to fault find that one yet.
And I doubt we would have gotten acquainted if I didn't remove my dash.
Just a pity it's taking me so long to get back in.

OK having a look at the diagrams I can't see how it would be different, it looks like on the Puma the left and right share the same outlet from the box. Looks like I am back to square one. I was preparing to pull the dash today, I am glad I didn't start that just yet. only thing I can think of looking at this is perhaps it is not seated correctly on the right hand side or something, but that would not explain the warm air.

1502_air-vents-louvres-ducts.png

Originally Posted by patclan

OK having a look at the diagrams I can't see how it would be different, it looks like on the Puma the left and right share the same outlet from the box. Looks like I am back to square one. I was preparing to pull the dash today, I am glad I didn't start that just yet. only thing I can think of looking at this is perhaps it is not seated correctly on the right hand side or something, but that would not explain the warm air.

1502_air-vents-louvres-ducts.png

So maybe you're back to checking for a gap in the ventilation piping in the engine bay. Basically, the body inlet and the piping may not meet properly on the front passenger side.

Maybe short on gas

AM