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Omega General Help / Re: Omega overheating and then fine again. Z22XE
« on: 11 June 2020, 16:21:30 »Correction; it is controlled by a vacuum hose, not a cable, it can be seen in the pic running under my left thumb, it goes into a connector above the diaphragm.Started up the car and set the heat to HI and yep there is was dripping quite a lot from around the gearbox.On a 2.2, you can see the HBV from below, but it's a long way up, and it's difficult to get both arms up to hold the valve while pulling off the hoses. Working above means removing the scuttle, but the hoses have enough slack to allow you to pull it up, as in my picture, hold the HBV in one hand while pulling off the hoses with the other.
I have a brand new one lying around because i ment to replace it as a preventive matter but it's so tight around it that it needs to be replaced from the bottom. So i won't be doing this without a lift.
The hoses can be hard to remove. It helps to label the hoses.