O2 Sensor Problems - Toyota Nation Forum : Toyota Car and Truck Forums

izzrock · 10-04-2004, 01:53 PM

My 97 4Runner has been giving me the ol' engine light treatment. The shop that i bring it to replaced the sensors and I still have the problem. I went to another shop and they said that the O2 sensors are fine, so he changed the O2 heater relay and cleared the code that caused the "check engine" condition. A day later the same problem. Does anyone have any ideas???

KAUAI KANE · 10-04-2004, 02:08 PM

bad gasket's maybe. which o2 sensor is it

izzrock · 10-05-2004, 11:27 AM

The work was done by a s local shop so I'm not sure which sensor it was....You mentioned a gasket....what gasket and where is it located...how does this effect the O2 sensor???

KAUAI KANE · 10-05-2004, 11:35 AM

cant reall tell you unless you tell me where exactly is the 02 sensor could be an exhaust gasket etc...