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1991 Metro acting funky
Topic Started: Apr 28 2011, 07:02 PM (2,002 Views)
Mikemetro
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Try loosening the exhaust flange bolts. Take it for a drive and see how it runs. If it runs better then prob your CAT. Also you might have just knocked off a wire/vacuum line last time you were under the hood causing your code 23
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Woodie
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23 is the Intake Air Temperature sensor mounted on the back of the air cleaner.
13 is the Oxygen sensor

Might be a bad ground causing both codes.

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wizard93
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Just because the ECU is sending a code for the oxygen sensor, doesn't necessarily mean that the sensor it bad. I've seen instances where the computer throws a code for a sensor and the sensor is still good. A code can mean that the computer is getting a reading from a sensor that is outside normal parameters. That can be secondary to another problem.

My Subaru did that a while back. It was sending a code for something else and it ended up being the knock sensor. I replaced the sensor, and the other codes went away.

Check all your vacuum lines and wires and make sure everything is plugged in properly.
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