rough idle engine light

[Brian Lowe]

need help

2001 rough idle P0133 code

120,000 miles new MAF

thoughts?

 

[Torrie McPhail]

That's a primary 02 sensor code



*** P0133 O2 (HO2S-11) CIRCUIT SLOW RESPONSE (bank 1, sensor 1) G (m) M (m)



Take care,

Mr. Torrie R. McPhail - (Owner)

http://www.FastPartsNetwork.com

http://www.UnleashedTuning.com

Ford/GM/Dodge/Chrysler/Jeep SCT Custom Calibrator

OEM Ford Parts Specialist

 

[Kevin Palmer]

Brian,,,



Keep in mind that, the code is more than likely a result, but not a cause of the rough idle.



For example, if you have a faulty injector in a cylinder and it allows more fuel than the normal, it may cause both a rough idle as well as cause the O2 to read slower depending on how much extra fuel is getting into the cylinder.



Just giving you an example so you don't just swap out the sensor and hope you solve the concern..

 

[Brian Lowe]

thanks o2 sensors were replace at 100k intake gaskets too, fuel pump as well



fuel filter change 2 times in 120k, doesn't have the elbow



seems to run fine at full speed???



any other thoughts???? coil?



thanks in advance

 

[Rodger Tellefson]

My practice is to replace my fuel filter once a year. Follow Coastiejoe's advice and have your injectors checked too.

 

[Les]

Diagnostic Trouble Code (DTC) Descriptions

P0133 - HO2S Sensor Circuit Slow Response (HO2S-11) The HEGO Monitor checks the HO2S Sensor frequency and amplitude. If during testing the frequency and amplitude were to fall below a calibrated limit, the test will fail.



Contaminated HO2S sensor.

Exhaust leaks.

Shorted /open wiring.

Improper fueling.

MAF sensor.

Deteriorating HO2S sensor.

Inlet air leaks.



Access HO2S test results from the Generic OBD-II menu to verify DTC

Hope this helps.