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Re: How to tell if cat converter bad? Posted by SWEDECAR [Email] ![]() ![]() ![]() In Reply to: Re: How to tell if cat converter bad?, Wilson, Mon, 10 Oct 2005 18:27:09 Members do not see ads below this line. - Help Keep This Site Online - Signup |
The front oxygen sensor slowly goes bad with age and mileage. It will produce less and less good gas mileage long before it is bad enough to trigger a code or make the car fail smog.
But it could also be a slew of other things that make the car feel less peppy.
If everything else is up to par with the rest of service items like filters, fluids and ignition parts and the car have over 100K miles it is always something to try to replace the oxygen sensor and see if it will give back some gas mileage. I can't promise but it might.
Anders
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