Dashboard level vent modification -- 406 CoupÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂ© FORUM

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Date Posted: 08:10:16 08/29/02 Thu
Author: David Lewis
Subject: Dashboard level vent modification

I found that no matter how I tried to adjust the two driver side vents, when the air-con was running I could not stop a stream of icy air freezing my fingers on the steering wheel. This may sound trivial but after a trip of several hundred miles my finger joints were quite painful. PSA do not allow the air to these vents to be fully controlled by the electronic ventilation control selector as they discovered late in development that without some bleed through these vents the climate control thermostat could not adequately change the cabin temperature. The advice was to close them off completely using the thumb wheel air volume controls. But if you want air through these vents it is not possible to direct all the air away from the driver's hands.

On inspecting the vent mechanism I discovered that the vertical vanes which direct the air left and right can never deflect the air close to the edge of the aperture. I cured this by just pulling out the vent units, they will unclip with a firm pull, and blanking off an inch of the vent on the inboard side of each vent with black plastic sheet cut from a loose-leaf binder held in place with double-sided carpet fixing tape, making sure that it was secured at the top, bottom and side and that it bowed away from the moving vanes to allow them to pass. I replaced the vent grids and now can still direct air fully left or right but do not have the constant bleed of unwanted air at the vent edges adjacent to the air volume thumb wheels.

The actual modification is not beautiful but with the vents replaced cannot be seen at all. The vent is now redesigned the way that PSA should have designed it in the first place.

Now has anyone got any ideas how to stop the engine revs rising 500 rpm and driving the car forward when the power steering is activated while the car is stationery. I've got a cracked front bumper to point up that design quirk!

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