2005 PT Cruiser running extremely rich.

Asked by Jerry Oct 17, 2018 at 10:14 PM about the 2005 Chrysler PT Cruiser Touring Wagon FWD

Question type: Maintenance & Repair

almost changed CAT and found Black soot in exhaust manifold and on both
new O2 sensors. what next? the only thinks not changed are throttle position
sensor and intake seals.

6 Answers
159,085

Bob answered 6 years ago

A defective o2 sensor can cause a rich condition. Is the check engine light illuminated?

Mark helpful

Jerry answered 6 years ago

Should I put old cat back in till I find rich fuel problem so I don't clog new Cat? I'm thinking yes as it is not completely clogged.

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190

showgirl answered 6 years ago

Bank 1 is 02 sensor before cat... Did you put the new cat in and clear codes then start car to get these 2 codes?...>do not put old cat in then your going backwards

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