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Fault code 533 and 174

Car does not idle smooth. have fault codes 533 and 174.

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PO 174--System Too Lean (Bank 2) oxygen sensor

PO 533--A/C Refrigerant Pressure Sensor Circuit High Input

Should idle okey without a/c on-- or you got more things to work on

Posted on Nov 30, 2012

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5 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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fisherman816
  • 66 Answers

SOURCE: What would cause the car to start with rough idle

sparkplug cables.

Posted on Nov 07, 2009

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SOURCE: trouble code po430 what does this mean? also car

This code means the Catalytic converter on bank 2 is not working efficiently. If your car is acting up with hesitation the Catalytic may be getting fouled by the way the engine is running. There may be another Code to read for the problem that caused the Catalytic converter to foul.

You have between 25 and 35 Startups before a Code is erased. Consider the Code 430 as the last Code recorded and the other Codes were beyond the 25 to 35 Startup limit.

You have several choices. (Autozone and Oreillys give free scans) There are fuel additives which claim to clean the fuel system and Catalytic converters. You can have the car put on a better machine at a Dealer to find the cause of the hesitation. BUT tell them you want the type of test for cylinder balance and timing issues, not just Code numbers.

Once you restore the engine to Specs, the Catalytic converter may clean itself over time.

Posted on Nov 15, 2010

  • 18 Answers

SOURCE: 2000 Mercury Cougar 2.5l V6

USE THE MORE EXPENSIVE FUEL INJECTOR CLEANER , CALIBRATION NEED ON NEW SPARK PLUGS AND U WILL SEE THE DIFFERENCE. AVM(elanimalsalvage@yahoo.com)

Posted on Feb 10, 2011

alicantecoli
  • 22156 Answers

SOURCE: 2.4L idles rough yet goes

it will show code again later but have you changed the coil pack??

Posted on Aug 18, 2011

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