Questions and discussions about oxygen (O2) sensors. Oxygen sensors are used to measure the exhaust gas concentration of oxygen for internal combustion engines in automobiles and other vehicles.

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My BMW X5 won't stay running

Hello I have a 2003 BMW X5. I just got the engine replace a couple days ago. I went to pick it up but because the shop was done installing the motor but now I have to deal with the other problems I ...