Quote:
Originally Posted by fuct
they do a sniffer test in houston and the eight surrounding regions/areas. (or at least the last place i went) im sure its up to the shop. i had replaced an O2 sensor and tryed to get it tested before putting enough miles on the car before the sensors were reset and didnt pass. had to drive around for about 100 miles then i passed.
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For 95 and older they do sniffer tests because of OBD-I, but for OBD-II they just use the ECU to check instead.