Master
Hi all.
Have just picked up our new / used 2002 Disco 2.
When I bought it I was aware the air-con needed attention, but after a long drive and some further investigation, it turns out it may be the heater matrix at fault.
It's getting hot, very hot, and once it heats up, the cab stays hot on the drivers side. Cool air flows from the top vents but down in the drivers footwell it's quite warm.
When I pulled it apart to look around I noticed the Heater Matrix was still very hot to touch after it had been parked for a while. I've looked at other threads on here but haven't as yet figure out what to do here.
Could it be:
a) reversed in/out line to the matrix
b) an airlock
c) something else in the matrix / lines
d) something horribly expensive
I've read that people bypass the matrix, I would prefer to track down the cause and deal with that if possible.
Other than that the new car is kicking butt so far! Loving having a Disco back! It actually handles better on the high way than our old one by a long shot!
Cheers
Wil
:-)
Master
hot cabin
I've had my 02 D2 since 04 always had this problem, hot air from the centre floor consul only when the aircon is off so-----run with the aircon on. Somewhere back in the dark future I read on the forum that it was something to do with a build[fitting] problem that required removal ofthe consul.
Master
My problem actually occurs with the aircon going full-tilt and only on the drivers side. Had to keep opening the windows!
Wil
Master
SubscriberYour heater matrix will get hot. Coolant is always flowing through it, there is no tap to turn coolant flow off. You could fit a tap and it would help.
Master
Yeah but this is unbearably hot. Wind the windows down and drive fast kinda hot. The aircon cant keep up with it. I wonder if there's a block that is preventing flow through the matrix. Perhaps the engine is running too hot? The temp gauge stay firm in the middle.Originally Posted by woko
Wil
TopicToaster
MY temp gauge hit the middle at 55 deg and stays there over 100 so it's up there with diet croutons as far as usefullness goes.
You could get a hose with a 180 bend in it, by memory late RRC's had one of their heater hoses that you could cut back and use two link the to tubes.
Master
I laughed out loud at that!Diet Croutons!!
AT REST
Either you need to find the flap in your heater that is sticking, or you fit a 4 port heater control valve from a VT Commodore. It requires a switched vacuum supply which you can organise with a vacuum solenoid and a dash switch. Then your heater core remains cold at all times when you want cooling. Very cost effective repair.
Master
Don't the flaps only direct air coming through the vents? The side of the matrix is really hot - too hot to touch, it's heating up the center console too. There's warm air in the vents, but you can still feel the cool from face level vents. It's pretty much the heat from the side that is warming things up as far as I can see.
Brilliant idea!
I'm a bit hell bent on finding the actual cause though, as my old disco's aircon & heater were great! I wonder if something has been connected arse about face when it had it's last visit to the disco doctor.
Wil
TopicToaster
There's nothing in water plumbing to really screw up unless you can mix up 2 hoses. Even if you did cross them it's only water in/out.
I also like the 4pt tap idea. Where would you find a small on/off vac switch for it?
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