Land Rover Defender/90: heater problem

[RESSE]

I have a problem with my 1989 Defender (which is 'technically a 90).

1. The heater blower fan is blowing good and strong but only cold air.

2. I have changed the thermostat.

3. Temp gauge sits bang in the middle, but cannot work out why I cannot get any hot air.

Any ideas as I am stumped?

I know the heaters in 23 year old Landies are never very good, but I am chilling my balls off in the current climate.

3528cc V8 Range Rover engine fitted.

[camel_landy]

Airlock??

Try bleeding the system around the heater matrix & see if you get any air out.

M

[RESSE]

camel_landy said:

Airlock??

Try bleeding the system around the heater matrix & see if you get any air out.

M

Thanks M

[ExiledTaff]

Without checking on the specifics, How is the heat controlled? Is the temp control valve working?

[RESSE]

ExiledTaff said:

Without checking on the specifics, How is the heat controlled? Is the temp control valve working?

New temp switch fitted last weekend and assy heater control.

[cpas]

Is the control at the valve end working fully in both directions when the dash lever is operated? In other words, is hot water getting through to the matrix?
Can you feel hot water in the pipe to the heater matrix? Maybe the matrix is just silted up - new ones are only about £35.

[cpas]

The following may help:

http://landytown.myfastforum.org/archive/defender-...o_tt_1383.html

[RESSE]

cpas said:

The following may help:

http://landytown.myfastforum.org/archive/defender-...o_tt_1383.html

Many thanks for the replies guys, I am going to have a look later today.

Richard

[cpas]

Let me know how you get on - I'll probably be changing my matrix in the near future!

On a similar note, a friend of mine bought a car a few years ago cheap as the heater didn't work. The previous owners had spent a lot of time and money trying to fix it as it wouldn't demist properly in the winter. By absolute luck, I found out withing 5 minutes of looking at it that the hot/cold cable had become disconnected at the heater end which was a 5 minute fix. Made my day

[RESSE]

Thanks for the post - I'll let you know! Spent today fitting new seats, rear wheel carrier and sorting out indicator shorting issues. Getting there slowly but loving tinkering on my 23 year old Landie. V8 sounds glorious so makes up for no heat.

[RESSE]

No joy after much head scratching this weekend, but I think I have narrowed the problem down to the heater matrix.