F150online Forums - O2 Sensor Problems

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andy210

01-27-2010 04:43 PM

O2 Sensor Problems

i have a 97 with a 4.6L V8. 200.000 miles

i just replaced all O2 Sensors and im still getting a CEL for a slow response from the back O2 sensor (post-cat), plus my avg. mpg is rediculously low. i have a feeling these two are realted.
please help...

f150fella08

01-27-2010 06:48 PM

maybe you have a bad converter..

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