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Jordo! · 03-28-2012, 10:33 AM

It's possible that either the wiring is damaged (happened to me from a stray rock on 2ndary O2) or the sensor itself is bad. Primary O2 will be located somewhere upstream of the cat -- shop manual should have a diagram.

It's also possible that the shop damaged the O2 sensor or didn't plug in the connector all the way when they dealt with the leak I suppose... not sure if erratic fuel trims would set it off too, which could be due to MAF's moving around (if aftermarket intake) or vacuum or exhaust leak anywhere before or just after the primary O2's.

03-28-2012, 10:33 AM	#11 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 418	It's possible that either the wiring is damaged (happened to me from a stray rock on 2ndary O2) or the sensor itself is bad. Primary O2 will be located somewhere upstream of the cat -- shop manual should have a diagram. It's also possible that the shop damaged the O2 sensor or didn't plug in the connector all the way when they dealt with the leak I suppose... not sure if erratic fuel trims would set it off too, which could be due to MAF's moving around (if aftermarket intake) or vacuum or exhaust leak anywhere before or just after the primary O2's. __________________ Enjoy it. Destroy it. Last edited by Jordo!; 03-28-2012 at 10:37 AM.