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Where is the oxygen sensor and how do you replace on a 1999 Mazda Millenia?
Wiki User
∙ 13y ago
Which one -
2.5L or 2.3L ?
In the case of the 2.5L, there are four, only one which is easily visible.
the rest are difficult at best to see much less get common tools in to DIY.
Live Longer- Pay a shop to find the right one that needs replaced and let them do it.
Wiki User
∙ 13y ago
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bottom
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