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[crew18]

hi can any1 help?

I have a 2000 (W reg) omega 2.5 V6 gls model and i can not get the heating working for love nor money.
I can be driving for well over 3 hours and turn it on full heat or hi as it says and still on all fan speed settings still blowing out cold air ? :question

if any1 could advise would be most welcome 

[RobG]

Pull the small vac pipe off the top of the HBV, see if you have heat

[crew18]

hi

sorry where abouts is the vac pipe ?

[PhilRich]

This is a "How-to" for replacing the HBV but it will show you everything you need 


http://www.omegaowners.com/forum/YaBB.pl?num=1193594464

[Entwood]

Make sure you stick a small bolt or screw into the end of the vac pipe once removed .. or you'll have a permanent "vac leak" to contend with ..

[crew18]

hi i have checked it and it is getting no heat to it  :-/

[Abiton]

Hi crew18, I don't think this test was described clearly enough.

You're not looking for heat at the vacuum pipe/connection.  The idea is, you disconnect (and plug up) the vacuum hose that is normally connected to the HBV.  This should force the HBV to direct full coolant flow through the matrix, all the time.  Then see whether the cabin heating works.

The reason this has been suggested is that sometimes a vacuum-control solenoid gets its knickers in a knot resulting in vacuum on this pipe all the time, which causes the HBV to be in the 'no coolant flow to the matrix' state. 
Isolate the HBV from this vac hose, and you can be sure that no vacuum is being applied to the HBV.  This should prove one way or the other whether the HBV is getting correct vacuum 'information'.

[PhilRich]

Hi crew18, I don't think this test was described clearly enough.

You're not looking for heat at the vacuum pipe/connection.  The idea is, you disconnect (and plug up) the vacuum hose that is normally connected to the HBV.  This should force the HBV to direct full coolant flow through the matrix, all the time.  Then see whether the cabin heating works.

The reason this has been suggested is that sometimes a vacuum-control solenoid gets its knickers in a knot resulting in vacuum on this pipe all the time, which causes the HBV to be in the 'no coolant flow to the matrix' state. 
Isolate the HBV from this vac hose, and you can be sure that no vacuum is being applied to the HBV.  This should prove one way or the other whether the HBV is getting correct vacuum 'information'.

It doesn't get any clearer than that Abiton 

[crew18]

Hi I have managed to narrow it down to the hater resistor but have no idea what or where it might be so far I have removed the glovebox and all the plastic trim and also all of the plastic trim and pollen filter on the engine bay side still can't find it plus also don't know what it looks like.  Any ideas please

[RobG]

Glovebox out, blower motor is slightly to left of centre (big round thing) to the right of blower casing is a small multi-plug connected to the heater resistor, careful the clips don`t snap when trying to get the resistor out. Looks like this

[crew18]

Many thanks I managed to squeeze it out fingers crossed it is this

[crew18]

I have managed to replace the thermostatic resistor and the valve but the little electric motor is still not coming on getting no power to it I have bridged it straight accrues direct from the battery to make it run have left it running with a warm engine (90 deg) and left it for 15 min and still air being blown out cold please help

[TheBoy]

How on earth did you diagnose it to the speed controller


Back to basics. Have you tried disconnecting vac pipe to HBV?  Which pipes around HBV area get hot? Are the pipes going into bulkhead getting hot?

[crew18]

Yes that has been tryed and none of the pipes going into the car are warm at all

[crew18]

all sorted had to remove the heater matrix as it was blocked and no water was moving at all hense no heat.

 thanks