Heater temperature

So i'm going to ask probably the most asked question of them all

Is there any way of increasing the temperature for the car's pathetic internal heater. It might be just because it is a little cold outside at the moment, but even after an hour driving the air coming out the vents is still barely over the external air temp even when on full.

and if there is a fix to increasing the fan speed then also shout.

are they supposed to be comfortable

Rich.

Try this thread, amongst numerous others on the same subject…

https://www.landyzone.co.uk/land-rover/defender-heater-improvement.383379/

You are right, one of the most talked about items with Landys.
Do not know your model but my 200tdi blows nice and warm after some 4/5 mile driving. To have this I have the following.
System in good order with clear heater matrix and heater box seals and seal to bulkhead good condition.
The correct engine thermostat in working order.
An electric fan for the rad. If you have the viscous one it can be removed for cold weather but I recommend having a temp gauge that is accurate and reads in numbers degrees.
In the winter I cover the lower half of the rad with a section of plastic Correx [stuff used in for sale signs] held against the face of rad by a springy bit of plastic between rad an grill. All can be quickly removed by hand if need be.
Run heater fan at slow speed as when going fast it brings in more cold air than heater can cope with at least until engine is well up to running temp.

thanks, she a 1986, with a 200tdi

adyw said:

she a 1986, with a 200tdi

Click to expand...

theres a few around, ours has a shit heater
I'm thinking of a different fan motor setup and sealing the heaterbox properly...

Rich.

adyw said:

So i'm going to ask probably the most asked question of them all Is there any way of increasing the temperature for the car's pathetic internal heater.
It might be just because it is a little cold outside at the moment, but even after an hour driving the air coming out the vents is still barely over the external air temp even when on full.
and if there is a fix to increasing the fan speed then also shout.

Click to expand...

There are a lot of threads on this very subject .... the search function is your friend.
Once the engine is 'hot' the trick is to ensure that the heater matrix isn't blocked.
You can fush it out by running a hose through it.
The second trick is to ensure that the heaters fan is blowing air through the matrix and into the heating plenum below the dash.
The fan runs at full speed when connected directly to the cars 12V supply.

To get all this info you really need to remove the heater from the car - it's a fiddle, but it's not too hard.
New external foam/rubber seals ensure the air is channeled/drawn into the heater box and pushed into the cabin, new internal foam seals ensure the air is channeled through the matrix (not around it).
The fan draws a fair bit of current at full chatt, there can be issues with the 12V cables, it draws in and pushes a lot of air through the heater. If you think it needs speeding up and it's cold, you may not be blowing air through the matrix or 100% into the cabin.




Before refurb with a fecked seal ...

Good pic, typical of heater box when removed, mine was like that. Also a good time to sort any rot that may be found beneath it in the footwell plate where hidden holes can let in cold air.

so having poked around this morning i think its a combination of a few things,

water level in radiator was not all the way to the top,
Expansion tank level was low.
Then when the car was running and the fans on, i can feel air blowing out the side of the heater box where the matrix pipes go in. And finally when i turned the car off i can hear a slight hisssssssss, from the expansion tank.

So i suggest a new seal on the tank and some sealant around the matrix.