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Loyale how to test EGR temperature sensor-


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The EGR temperature sensor is out of the car. Multimeter reads infinite ohms when at room temp. Putting it into very hot water - ohm reading appears. Starts at 175k and gets down to 80k, which seems to be way out of range. I think it should start at 400 ohms when cold then ohms drop as it heats up. ???

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No codes. We know that EGR will affect NO (ppm). Now, I did pass California smog last week, but I am curious why the NO (ppm) @15mph was reading a whole lot higher than NO (ppm) @25mph.

This last test showed 800 ppm @ 15 mph and 67 ppm @ 25 mph. Am unsure whether or not EGR needs looking into.

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