02 censors

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04-14-2004, 01:35 AM

buddhacuda

Thread Starter

Join Date: Dec 2003

Location: United States

Posts: 32

02 censors

Can 02 censors really effect your gas mileage?

04-14-2004, 03:06 AM

Dan04COBRA

Super Moderator

Join Date: Jul 2003

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Posts: 14,917

RE: 02 censors

O2 Sensors.

Yes, faulty O2 Sensors can affect your gas mileage in ways you'd never imagine.

04-14-2004, 07:32 PM

buddhacuda

Thread Starter

Join Date: Dec 2003

Location: United States

Posts: 32

RE: 02 censors

how can bad 02 censors affect my gas mileage?? like i dont understand.

04-14-2004, 07:44 PM

w11988

1st Gear Member

Join Date: Sep 2003

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Posts: 138

RE: 02 censors

O2 sensors provide input to the ECM (Engine Control Module). One thing the ECM controls is the pulse width of the signal to the fuel injector. The larger the pulse width, the more fuel is injected. The ECM takes all kinds of input to determine this pulse width. To oversimplify I'm sure, bad input to the ECM (bad O2 sensor), can cause bad output (long pulse width). This long pulse width will cause you to run rich and waste fuel.