Idles low about 600 rpm in gear at a complete stop. changed the cam sensor and still idles low.

Asked by Oct 08, 2014 at 08:01 PM about the 2006 Mercury Montego Luxury AWD

Question type: Maintenance & Repair

Getting a code 171.Running to lean. Changed the cam sensor and still getting code for it.

2 Answers

86,905

P0171 is a lean code for bank 1 sensor 1, it has nothing to do with a cam sensor, things you need to check: air filter, fuel filter, fuel pressure and flow, vacuum leaks, ie PCV valve, intake leak, and of course the O2 sensor itself.

21,005

check also intake air control valve. If it runs good with your foot on the gas pedal but runs like s*** with your foot off the gas pedal start there.

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