Does a oxygen sensor is bad can the vehicle burn more gas
Possibly. If the o2 sensor wears out..wire falls off, the ECU does not have all the data it needs to set a proper fuel/air trim. But they last a long time.
I have a 2003 Toyota Tacoma pickup truck and all of a sudden is losing power going up hill what do you think it is
Check the air filter or oxygen sensor. It happens a lot in my case.
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