Question about 1999 Mercury Cougar

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My check engine lite keeps popping on. 3 shops said that it was the oxygen censor. 1 said the car only has one and the other two two shops said it has four. who was correct and and does this happen in a 99 mecury cougar.

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Sorry to say that ur wrong on only one u do have 2 though---- theres one before and theres one after the cat converter as to the 4 unless u have dual exhaust with 2 cat converters than u would have 4 but there is 4 different o2 sensors for ur car [ 6 cyl ] up-stream before cat-for cars built up to 04/99---other is cars built from 05/99 on- the same for down stream after cat --the difference is in the wiring connection

Posted on Aug 22, 2010

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At minimum it has a least two.Depending on which engine is in it 4 cyl or 6 cyl it may have 4 with the 6 cylinder.

Posted on Aug 22, 2010

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Will the oxygen censor on a 1990toyota Camry keep it from fireing it's a2.0


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1 Answer

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you need 2 replace your oxygen censor and check your evap for any leaks

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