Question about Cars & Trucks
To remove oxygen sensor you need to start engine get exhaust system hot.the oxygen sensor has to be hot before you can remove it.spray a little WD-40 it can be some help.
Posted on May 03, 2013
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Posted on Jan 02, 2017
its the ecu ,my camry had the same problem. one of the injectors is staying open and flooding the cylinder.changerd the injectors same problem,changed the ecu problem solved.
Posted on May 28, 2009
BANK 1 SENSOR 1 IS THE ONE IN THE EXHAUST MANIFOLD. BANK 2 SENSOR 2 IS BELOW THE CATALYTIC CONVERTER.
P0171 SHOULD GO AWAY WITH A GOOD O2 SENSOR BUT DO CHECK FOR VACUUM LEAKS TO BE SURE. 3.1/3.4L ENGINES HAVE A BAD DESIGN INTAKE MANIFOLD GASKET, THE LEAK OIL, COOLANT, AND AIR.
Posted on Jul 13, 2009
SOURCE: Exhaust leak and oil loss
the valve seals leaking oil inside the cylinder will cause an internal oil leak you can't see. exhaust leak is something different. best of luck.
Posted on Aug 06, 2009
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