Quote:
Originally Posted by eschaider
Very likely true, Mike. The downward angling is both a road debris issue and also a water issue. It turns out the water is less a flow of liquid in but rather a collection without escape provisions of vapor condensate in the sensor prior to coming up to temperature, ie startup.
With the sensor angled downward the condensate collects in the inside of the sensor instead of runing out to the exhaust. It is that collection of condensate as it is being warmed up that ultimately kills the sensor. While they work at 4 o'clock or 8 o'clock they have a longer service life and drift less with the sensor probe end angled slightly downward to allow condensate to be pulled out by gravity.
Ed
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When mounting the sensor on the side pipe it will look horrible facing down at 1:00 or 11:00 if not impossible.