No Heater

[zuk]

Hi Guys can any one help on where I start to look, I have no heater the air con works fine the heater has a very very light warmth to it but only out of drivers side the pasenger same as outside temp, book simbal ! is on temp screen have tryed every diffrent setting 98 HSE
Zuk

[haydent]

what youll prob find is its a problem with the heater blower motor, and there is one fan for the ac and one for the heater.

it could be a faulty switch, relay, fuse, resistor pack, or motor.

for me in my older d1 (92) it was a siezed motor.

good luck, grab a multimeter and wrokshop manual and start tracing the volts...

[zuk]

Hi Haydent is the blower the same as the fan control because the fan works fine just blows cold air.

[p38arover]

Both sides? One side? Is there any air blowing?

The car has two blowers, one for each side. It's unlikely both would fail. What happens when you use the temp control buttons to go from min to max on each side? Do both change? Neither? Only one side? If so, perhaps it's the blend motor(s).

My first guess would be a blend motor. Read the diagnosis pages and repair pages on RANGEROVERS.NET HOME (http://www.rangerovers.net) e.g., Blend Motor Diagnosis and Replacement (http://www.rangerovers.net/repairdetails/blendmotor.html)

[haydent]

sounds like a problem with your mixer if your fan works with the heater settings on

[zuk]

Thanks Guys the temp display works fine both sides up and down the fan works fine, when auto is on the fan switchs to all vents, you can turn the air on and off all direction buttons work if you switch to face vents and put your hand on the center you can feel a small amout of warmth out of drives side but dead cold out of pasenger side nomatter what fan setting you have it on.
Zuk

[p38arover]

Thanks Guys the temp display works fine both sides up and down the fan works fine, when auto is on the fan switchs to all vents, you can turn the air on and off all direction buttons work if you switch to face vents and put your hand on the center you can feel a small amout of warmth out of drives side but dead cold out of pasenger side nomatter what fan setting you have it on.
Zuk

When you adjust the driver's side temp up and down, does the temp of the air change? That's why I asked you to go from max to min.

If so, you have a faulty blend flap servo motor on the passenger side. Quite common.

Read the diagnostic procedure in the link I gave you for RangeRovers.net

[zuk]

No the temp of the air dosent change at all, display temp go's up and down fine.

[p38arover]

Blend motor failure

[Hoges]

Similar issue and Faultmate said blend motor and feedback capacitor failure.

This morning temp outside was about 10 degC ...turned on ignition and voilà...no book symbol and I hear blend flaps moving...everything working as it should ...until ambient temp got above 19-20 deg C...
May need to insert larger self tapping screws in casing....

[zuk]

Thank you Gentelmen great help should be able to fix it with all this info
Zuk

[p38arover]

Similar issue and Faultmate said blend motor and feedback capacitor failure.

Do you mean feedback resistor failure? That's what they use, a feedback potentiometer.

[Hoges]

Ohm my goodness... you're right...again!:o:p

[p38arover]

Ohm my goodness... you're right...again!:o:p

Gaahhhh! :D

[PeterH]

Sounds like blend motors, but have you considered it could be a blocked heater core? How long since you did a coolant change?
It would be pretty easy to flush the heater core from the engine bay where the heater pipes connect.

[p38arover]

Sounds like blend motors, but have you considered it could be a blocked heater core? How long since you did a coolant change?
It would be pretty easy to flush the heater core from the engine bay where the heater pipes connect.

If it has heat one side but not the other, then it won't be a heater core.

I also doubt one could block these heater cores, the tubing is quite large in diameter.

Look at the size compare to my finger:

http://www.aulro.com/afvb/attachment.php?attachmentid=46977&stc=1&d=1337257851

[DT-P38]

PPL listen to this man. He knows his stuff.

[Pierre]

Hail damage on the right hand end tube! Easy fix...

[p38arover]

Hail damage on the right hand end tube! Easy fix...

I found that hole after fitting the new heater and then having to remove it owing to the massive leak!

Oh, even though my radiator was blocked, the old heater core wasn't. This was my radiator.

http://www.aulro.com/afvb/attachment.php?attachmentid=46979&stc=1&d=1337296785

[wayneg]

Apart from the wiring loom can anyone confirm if all 3 blend motors are the same and can fit any position or are they specific to a position on the car.

[Pierre]

Ron, what was the "gunk" in the radiator? What it set like a rock, or spongy? Where do you reckon it might have come from?

Pete

[p38arover]

It was relatively hard. I'm not sure from where it originated. I replaced the radiator but also rodded this one out just to see if it was possible. I used a stainless steel backing strip (about 2.5mm x 1mm thick) from a wiper blade.

[p38arover]

Apart from the wiring loom can anyone confirm if all 3 blend motors are the same and can fit any position or are they specific to a position on the car.

All the same. There position is identified by the colour of the piece of tubing over two of the cables.