Your first option should be to purchase a repair manual for your car. Check Amazon.com for the appropriate Chilton or Haynes publication. Your Check Engine light should come on if there's a problem with the 02 sensors or any other part of the engine control system. If you're just trying to be proactive here's the method as shown in the factory service manual With the engine cold (68 degrees F) measure resistance between the 02 sensor plug terminals. The resistance should be 11 to 16 ohms. If that figure is correct run the engine until it's thorougly warm. With the sensor hot (1472 degrees F) the resistance should read 23 to 32 ohms. The figures are the same for both 02 sensors. Cheers
multimeter
No
My check engine light will not go off. I change the oxygen sensors, but it did not help. Four oxygen sensors are on the vehicle. Please help me locate the problem. Thank you Franklin
2002 Chevrolet Tahoe has two oxygen sensors How do I check them ?
Yes, it can affect the oxygen sensors and catalytic converter.Yes, it can affect the oxygen sensors and catalytic converter.
There are 2 oxygen sensors on a 2004 Ford Taurus. The oxygen sensors check for the amount of going into the converter.?æ
Check
There are 2 oxygen sensors - one pre-cat and one post catyltic convertor. They are on the passenger side, in the manifold. Be sure to check the trouble code to identify which one might be defective.
Yes but the check engine light will be on.
what sensors have you replaced?? i am assuming the oxygen sensors. i need a code number to tell you what is wrong. if its a p0420 its probabily the catalytic converter. mabye a p0141-mass air flow needs to be cleaned
Check out Amazon.
Check