XR GT

I have an XE V8.

Heater is not working. The Fan operates OK

The heater hose valve under the bonnet has been removed. If this unit is removed wouldnt this create constant hot air.

If you slide the leaver from hot to cold it makes no difference.
If you slide the leaver from OFF to SCREEN it makes no difference.
It appears to constantly give warm air to the screen only.

Can anyone give me some advise?

Cheers
Joe

xr6wgn

I think the root of your problem will be the supply of Vacuum to the system. There should be two rubber hoses coming through the firewall - one will go to the removed water valve and the other one should connect to a plastic fitting on the manifold. (That should be your main supply).

I don't know if the system works with the valve removed but when you move the lever from hot to cold, this pushes down on a small plunger / air valve (you'll see it if you remove the glovebox) I know that in my XD when that one failed I had no heat inside the car.

Hope it helps

Paul B
XR6WGN

__________________
476 EF XR6 Wagons - 198 were Manual
Member Tickford / FPV Club - SA

XR GT

The plastic fiiting on the manifold, is this on the passenger side?

Your right, because the system appears not to have any vacuum. I have found 2 rubber hoses behind the glove box that are not connected.

Cheers
Joe

yeah right

I have the same problem with my XF Ghia. The vacuum is connected however and the arm on the black disc/cam behind the glovebox moves with the temperature slide. So it's not a lack of vacuum supply, but I still can't get hot air out of it. The valve on the heater hose in the engine bay has been removed too, and the vacuum line that went to it has been capped.

Anyone got any other ideas?

yeah right

Mine turned out to be a blocked heater core. The water blaster in the outlet pipe with the inlet hose off too did the trick and now I've got nice toasty hot air when I want it.

jas24zzk

If EVERYTHING is connected as per factory, then there are two likely problems.
One is easy, the other involves full dash remove.

Dash remove. Blocked heater core. Not uncommon.

Easy. The heater Tap (in engine) bay is blocked. Don't stuff about cleaning it, they do become brittle and unreliable, replace it.

Jas

TruBlu351

Yep......if its old, you face the chance of it leaking and filling up your passenger floorpan with coolant......been there!

Have FUN getting the damn thing out!!

__________________
XE Falcon
393 Tremec TKO 9"

jas24zzk

Actually,
they aren't that hard. Unlike a crappdore, you can get the dash out as a 90% complete unit.

Jas