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[Entwood]

Electronic air con....  facelift, been having problems with it steaming up, tried all the usual fixes with no joy, so now to more esoteric matters ..

Got the glove box out and have checked the vaccuum valve, which seems to work fine, selecting/deselecting recirc the valve clicks and the vaccuum appears/disappears at the outlet.

However there is no sound of the flap physically moving when selected, vac pipe dissapears into the bowels of the beast ...so i can't follow it .... just where is the other end !!

Must be a corresponding servo somewhere by the flap itself ?

Any ideas   anyone ??

[symes]

its up behind glove box-get a torch and you should see it-its awkward but you can get to it mate

[Entwood]

its up behind glove box-get a torch and you should see it-its awkward but you can get to it mate

Thats what I thought .. but I'll be buggered if I can see it ..

[symes]

Honestly its there mate you need a torch though

[Entwood]

Right .. getting somewhere I think ....  there are 2 solenoid valves .. one has the blue lined vac pipe that goes to the recirc valve, and appears to do nothing ... not yet put a multimeter on it......

If I suck like a bandit on the blue lined vac I can see the servo at t'other end move ... now... which is "recirc" ... vac applied or no vac

What does the "other" servo do as it certainly "operates with the recirc switch but the pipe dissapears into the centre consol ....

Thanks for the help so far !!

[Kevin Wood]

HBV is vacuum operated.. Something else too, I think, but can't remember. Will have a look at the diagrams.

I believe the recirc flap should open the external air intake without vacuum. Vacuum applied gices recirculated air IIRC.

Could the pipes to the actuators have been swapped over at some point?

[Entwood]

HBV is vacuum operated.. Something else too, I think, but can't remember. Will have a look at the diagrams.

I believe the recirc flap should open the external air intake without vacuum. Vacuum applied gices recirculated air IIRC.

Could the pipes to the actuators have been swapped over at some point?

Doubt is as until last month it all worked as expected !!

[Kevin Wood]

Nope. HBV and recirc flap are the only parts of the system that are vacuum operated.

I find mine occasionally sticks on recirc. I believe it's a known firmware issue. Cycling recirc on and off again normally fixes it though.

OK. Let's check the wiring colours. Common to both solenoids is a yellow wire. HBV solenoid has a blue and white wire in addition. Recirc is a blue wire.

[Entwood]

Nope. HBV and recirc flap are the only parts of the system that are vacuum operated.

I find mine occasionally sticks on recirc. I believe it's a known firmware issue. Cycling recirc on and off again normally fixes it though.

OK. Let's check the wiring colours. Common to both solenoids is a yellow wire. HBV solenoid has a blue and white wire in addition. Recirc is a blue wire.

Thanks for that .... tried something else given that info ... simply swapping the input wires and vac connections .... seems both solenoids work ... if I put yellow/solid blue to the one with the blue lined vac pipe the recirc servo moves, regardless of which solenoid I have the blue lined vac on ... which seems to prove both solenoids and the servo ...

so it would appear to all be functioning, although I haven't tested the HBV vac side .. full cold should give full vac if memory serves

Thanks for your help

[Kevin Wood]

If you have the blower motor running you should be able to tell when the recirc flap opens to the cabin by the increase in noise. I can tell mine's working from the driving seat.

Is the pollen filter clean and dry?

[Entwood]

Well it all seems to move now .. and the "note" does change which it had stopped doing ... I also discovered that if you select "Lo" the recirc flap automatically closes !!! Something I didn't know

HBV gets vac with "Lo" selected so that seems fine.

Pollen Filter is clean and dry, scuttle dry, boot "cubbby hole" clear, rear vents clear - I'd done all those before deciding to remove the glove box !!

Just have to see how it goes now, next damp night I guess ..

Thanks to all for all the help .. appreciated

[PhilRich]

Entwood, it might be worthwhile checking for damp/wetness under the passenger mat/carpet? I'm having problems there now from out of nowhere & need to check sunroof drains, leaking screen etc. when the opportunity arises, hth

[Entwood]

Entwood, it might be worthwhile checking for damp/wetness under the passenger mat/carpet? I'm having problems there now from out of nowhere & need to check sunroof drains, leaking screen etc. when the opportunity arises, hth

Bone dry ... and thats a symptom of a blocked scuttle drain...

http://www.omegaowners.com/forum/index.php?topic=90535.0

[robson]

Yes leaking screen can cause water under carpets I had it

[PhilRich]

Entwood, it might be worthwhile checking for damp/wetness under the passenger mat/carpet? I'm having problems there now from out of nowhere & need to check sunroof drains, leaking screen etc. when the opportunity arises, hth

Bone dry ... and thats a symptom of a blocked scuttle drain...

http://www.omegaowners.com/forum/index.php?topic=90535.0

Nope, that's the first thing I checked!