rickyhils Posted Friday at 05:55 PM Share Posted Friday at 05:55 PM 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. ??? Link to comment Share on other sites More sharing options...
SuspiciousPizza Posted Friday at 07:13 PM Share Posted Friday at 07:13 PM (edited) Are you getting a code 55 with the sensor connected? Edited Friday at 07:13 PM by SuspiciousPizza Link to comment Share on other sites More sharing options...
rickyhils Posted Friday at 11:17 PM Author Share Posted Friday at 11:17 PM 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. Link to comment Share on other sites More sharing options...
el_freddo Posted 16 minutes ago Share Posted 16 minutes ago What revs was the engine doing at each of these readings, and same gear/load? That could tell you a lot about what’s going on in your engine. Link to comment Share on other sites More sharing options...
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