Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: polilara on 03 August 2014, 11:43:15

Title: Vacuum pipes and motors controlling the air valves of the heating/cooling system
Post by: polilara on 03 August 2014, 11:43:15
Hello

Does anyone have schematics how the vacuum pipes/motors behind the dashboard are located and what valves they are controlling. I do not have any specific problems but when I one day took away the glowebox (when trying to find the day-light-relay with bad succes) I realized that the vacuum pipe controlling the "internal air circulation" was unplugged and stopped up with a screw. That is not a big problem, it just does not operate but there is another thing:

When I bought this car in Jan 2004 it was only 3 years old and it had a warranty from the seller. I pressed ten years ago this internal circulation button just to check what happens. What happened was that the air to windscreen was stopped and it did not come back even if I put the heating system to normal mode. I drowe the car to the seller and they repaired it under warranty. I was told that they changed one valve somewhere. I was not told which valve. Perhaps they also put this screw to that pipe. I do not know and I do not blame anybody. The heating/air cond. is working nicely except that in cold winter time sometimes I get some fog to windscreen even if the engine and car has been hot e.g. one hour. Perhaps there is something I could fix.
Title: Re: Vacuum pipes and motors controlling the air valves of the heating/cooling system
Post by: Johnny English on 04 August 2014, 14:05:39
Hello

Does anyone have schematics how the vacuum pipes/motors behind the dashboard are located and what valves they are controlling. I do not have any specific problems but when I one day took away the glowebox (when trying to find the day-light-relay with bad succes) I realized that the vacuum pipe controlling the "internal air circulation" was unplugged and stopped up with a screw. That is not a big problem, it just does not operate but there is another thing:

When I bought this car in Jan 2004 it was only 3 years old and it had a warranty from the seller. I pressed ten years ago this internal circulation button just to check what happens. What happened was that the air to windscreen was stopped and it did not come back even if I put the heating system to normal mode. I drowe the car to the seller and they repaired it under warranty. I was told that they changed one valve somewhere. I was not told which valve. Perhaps they also put this screw to that pipe. I do not know and I do not blame anybody. The heating/air cond. is working nicely except that in cold winter time sometimes I get some fog to windscreen even if the engine and car has been hot e.g. one hour. Perhaps there is something I could fix.

Hardly believe that it exists matey, when I had an issue similar to yours I was looking for a point or place what I did reach with the vaccum pipe.  Try it!

Laszlo,  Hungary
Title: Re: Vacuum pipes and motors controlling the air valves of the heating/cooling system
Post by: polilara on 05 August 2014, 08:25:51
OK, perhaps I have to take away everything possible, speed meter, radio, glowe box etc. to get there, it is hard to even see there.
Title: Re: Vacuum pipes and motors controlling the air valves of the heating/cooling system
Post by: chrisgixer on 05 August 2014, 08:35:24
OK, perhaps I have to take away everything possible, speed meter, radio, glowe box etc. to get there, it is hard to even see there.

Look up under the kick panels in the foot well. Maybe remove glove box. There's nothing to see for climate control behind radio.

Re misting in winter, are you running with Eco on?
Title: Re: Vacuum pipes and motors controlling the air valves of the heating/cooling system
Post by: chrisgixer on 05 August 2014, 08:36:39
Also try the reset. And there is a procedure to cycle the re circ valve as sometimes it gets stuck. Although I can't remember what the procedure is ::) ;D