Subject	Vacuum leak would cause you to run lean
Posted by	-Grimm- on October 14, 2013 at 3:58 PM
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In Reply To	engine was up to temp i went for a short drive prior posted by Khronik on October 14, 2013 at 03:25 PM
Message	Getting more air than is metered/accounted for Sounds more like an O2 sensor issue. Do you have any ECU talk /diagnostic programs? Even the cheapest programs have a 'scope' feature that makes sensor diagnostics much easier. For instance here is a picture of when my NA O2 sensor was bad (about 3 years ago) You can see LH running sinusoidal like it should, RH is flatlined. Here is a picture of my failed O2 sensor. The tip was broken causing erratic readings.
Follow Ups	O2 Sensor Test Issue - Khronik 13:04:33 10/13/13 EDIT: is light OFF lean or rich? - Khronik 14:04:04 10/14/13 LED On -> Lean, Off ->Rich - -Grimm- 14:33:05 10/14/13 Also, was your engine up to temp? (n/m) - -Grimm- 14:33:50 10/14/13 engine was up to temp i went for a short drive prior - Khronik 15:25:38 10/14/13 Vacuum leak would cause you to run lean - -Grimm- 15:58:55 10/14/13 i do not (n/m) - Khronik 16:23:44 10/14/13 z1 non-oem o2 sensors - Khronik 16:45:24 10/14/13 Bosch is an OEM supplier to many makes - -Grimm- 17:33:26 10/14/13 yes i do, ohm em? (n/m) - Khronik 17:47:08 10/14/13 No, check the voltage - -Grimm- 09:19:33 10/15/13
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