Quote:
Originally Posted by ErrorMargin
Did you confirm this? I want to test my altitude sensor since I have my car apart right now.
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This is confirmed. The sensor is a simple device consisting of a standard micro switch and a pressure capsule.
The pressure capsule below 1000m (3,280 ft above sea level), does not press against the switch, so it should be open circuit below 1,000m and the contact closes when the pressure capsule swells due to the lower atmospheric pressure at 1,000m and above.
944's use the same altitude sensor in case you are wondering. The altitude sensor can be mounted in any position.
In my case, my seat pressed against the sensor causing it to close the micro switch and cause my running issues. Prior to permanently deforming, my theory is that the weight of the seat itself could cause the micro switch to close under certain cornering conditions (intermittent fault). It caused me to chase my tail because until I caught the actual condition, I could not find an actual fault.
To make a long story short, don't mount an altitude sensor that works like this one where the sensor could become crushed or damaged.