2003 Ford Windstar 02 sensors?

2003 FORD WINDSTAR
122,000 MILES • 6 CYL • 2WD • AUTOMATIC
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CHECKMANN
  • MEMBER
  • 1 POST
Hi ,
I took my van into Advanced Auto for a diagnostic test for the check engine light, they told me I needed a "rear 02 sensor". I bought and replace the sensor that I thought was the right 1 same problem! Also I could only fine 1 sensor not 2... it was on the catylic convertor is there another 1 and where is it? Also is there something else that will make the check engine light come on?
Dec 25, 2008 at 2:08 PM
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BLACKOP555
  • CAR REPAIR CONTRIBUTOR
  • 10,386 POSTS
there is one before the convertor on the exhaust manifold, it is used to monitor fuel mixture. if that one is bad also it could m ake the second one throw a code as it refers to the first one to kn ow if the convertor is working properly.

if the convertor is bad it will also throw that code, and the convertor may need replacement.
Dec 25, 2008 at 5:36 PM
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