oxygen

Hello, My 2010 Mazda 5 Sport has the following symptoms in a northeast of the US area where the temperature right now is about 0-30F. The P2178 (too rich off idle) code showed up two weeks ago. The oxygen sensor has been replaced with the Mazda stock part by the garage. They could not find the...

I am new to these forums and I am trying to figure out how to navigate them (on my phone...no pc), so forgive me if this has already been addressed. I feel somewhat confident in my abilities working on my cars as I do most routine basic maintanance. But money is tight, and I need to replace (I...

My Car 2002 P5 145 xxx km Standard and stock I have a P0421 code and sometimes at idle my car will drop below 500 rpm if you give it gas its okay. I believe the computer is not controlling the air/fuel mixture properly. My manual says thats its the O2 sensors (loose or malfunctioning... they...