Car shuts off if I am stopped at red light or stopped in traffic

Tiny
LOU THARPE
  • MEMBER
  • 2005 MERCURY SABLE
  • 0.6L
  • 6 CYL
  • AUTOMATIC
  • 150,000 MILES
I took car to AutoZone and hooked it up to machine. Said PCV valve. Got one but all the people work on car says car does not need valve. Couldn't locate it. Last mechanic said it needs a sensor not PCV valve. AutoZone said I got the right part for make and model car.
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Thursday, July 11th, 2019 AT 8:33 AM

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Tiny
BMDOUBLE
  • EXPERT
Can you let us know what the code was that you got? P0171, P0174?
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Thursday, July 11th, 2019 AT 8:45 AM
Tiny
LOU THARPE
  • MEMBER
P0174, P2197, and 2198. 02 sensor signal stuck lean bank 2 sensor 1.
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Thursday, July 11th, 2019 AT 10:06 AM
Tiny
BMDOUBLE
  • EXPERT
If it were pcv related it would be affecting both banks. Bank 2, or the front/left side is having issues. The easiest way for me is that I would pull up the o2s11, o2s21 upstream sensor voltage data then spray some brake clean into the intake and look for the voltage to spike up to 1 volt. If that left side still shows 0 volts, then there will be either a sensor, circuit, or raraely a pcm issue. But if you do not have access to a good scanner that can view the parameters, spray the top of the engine when it's cold and listen for a slurp sound where the intake bolts to the heads, this is another prime suspect even though you only show codes for 1 bank, it is entirely possible to still have a huge vacuum leak. Always look and listen for the obvious things. Some of these engines also had a variable intake runner system that bolted to the rear of the intake between the firewall and the intake that has a huge round o-ring that would fail and cause massive leaks so be sure to wet the back side of the intake as well.
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Friday, July 12th, 2019 AT 10:50 AM

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