A/C controls

This is a typical sign for failing heater valves (stuck open). Loc just in front of firewall pass side (RHD) under a black lid. This is more or less an assy with the addtnl. water pump which is known to have brittle with age connectors.

You best bet for peace of mind is replace both in order to do the work only once

Cheers
Reinhard

Not that expensive.

Heater valves #7 are ca. 150 EUR incl. taxes. and the water pump #9 is 110 EUR. There may be the usual holiday island premium on your side
There is some likelihood that you will need a new cover #15 because it might break upon removal (pull straight up, feeling strong). You will also need a number of hose clamps and if brittle also replace short hoses #1-#4 (between 7 and 17 EUR ea).
Once in there I´d recommend to replace the #15 rubbers @ 3,3 EUR ea since they are responsible for an annoying "click" in your car when the heater is running and the rubbers have become hard over time.

This is a straighforward DIY job in fact. I assume that a workshop will charge 1-2 hrs for the labour.

Cheers
Reinhard

That heater valve and pump are a lot more expensive than that here in the UK and with a RHD car are not easy to fit. I would check the drivrs side zone temp sensor first though.

8Tech.

Price comparison might be in order then. The prices I quoted are without any rebates that we can get here. Ordering here will knock off another 10-15% off the prices given. If time does not play an all important role we can relay this from Germany. Shipping to the UK will run @ 18EUR per parcel up to 10kgs.

What makes it more difficult than in a LHD car?

If anything I actually would have expected to be easier to reach in a RHD car due to the hydraulics and brake booster setup being on the other side.

Anyone with a picture of where it has been relocated to in a RHD car?

LHD car location:

Cheers
Reinhard

PS: only one interior temp sensor in the IHKA control unit.

I have a spare valve if you want it. It's pretty old (from my 91) but it was working when I replaced it alongside my pump. The job is easy but fiddly as everything is very tight. Remember to bleed the cooling system afterwards (also easy) as you will introduce air. I'm not convinced the valve is at fault as I think the hot air doesn't go away when the valve fails. Good luck. Nick

Reinhard described the parts involved very well and I would add that his saying 'some likelihood' that the cover will break upon removal equals about a 95% chance that it will from my experience. It's not really a matter of whomever being careless, but heat and age make these brittle and the design of the snap rings in the grooves of the acorn nuts makes it an extremely secure fit. Also if the rubbers (vibration dampers) are borderline, then the upward pulling will take them over the edge and they will separate/break. If you go the replacement route of the valve/aux pump, just order the rubbers (3) and the cover too at the onset to save yourself time.

Spooky but true...........

Zitat von reinhard;67712

.......................What makes it more difficult than in a LHD car?

If anything I actually would have expected to be easier to reach in a RHD car due to the hydraulics and brake booster setup being on the other side.

Anyone with a picture of where it has been relocated to in a RHD car?

LHD car location:



Cheers
Reinhard

PS: only one interior temp sensor in the IHKA control unit.

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Location is IDENTICAL for LHD/RHD cars.
I could never understand this, but the brakes/hydraulics etc., have not been transposed for RHD cars.....the brake 'action' from the pedal assembly is carried over by a 'lever/bar' arrangement.....very heath-robinson indeed.

I don't think it's any more difficult in RHD than LHD....just very tight and little room to manoeuvre in there.

Lots of coolant bleeding to do afterwards don't forget, good luck.

Rheinhard,

Your picture could be of my engine bay! I too have tapped holes in the left hand side rocker cover. Anyone know what these are for?

Zitat von anguswolfendale;67847

Rheinhard,

Your picture could be of my engine bay!
...

Though this pic must be of a LH-drive car, as down in the engine bay you can see the hydraulic hose from the steering box on the left side.

So heres me dragging up Old posts in order to cure my car before it gets too hot this year & I melt;-)

I've similar problem in so far as there is no respite from hot air unless it's all switched to off on the fan.

So how did you sort out your car Violetduck??

Should I expect to replace parts under the bonnet or the heater control side of things inside the car?

I'd be very grateful for any pointers:)

If you have no control over the fan speed (either full-on or off), then the final-stage unit (Sword) has failed. If the fan works fine but will only blow out hot air, the most likely cause is the water-valves which are up against the firewall right next to the RHS (when viewed from the front of the car) electronics box.

The valves are under a plastic cover, seen here as described above:



The valves look like this (aux water pump is strapped underneath):

Thank you Timm.

Valves & Water pump it is then;-) then I 'll report back.