o2 sensor

[JPNinPA]

Well the code came up again. Same code. But my jeep died but started up and drove fine. Guys at checker said that o2 sensors can't kill the engine. I also told them I cleaned out my throttle body with carb cleaner and I told em I also cleaned out the tps, idle control valve and map sensor with the same cleaner. The idle control valve broke so I replaced that. They also said the same can happen to the map sensor and the map sensor can kill the engine and through out too lean on bank 1. I need your insights in my problem as my vehicle is my DD

Did you clean these while on the engine or did you remove them?
Did the jeep only die once? Any sputtering or rough idle prior?
P0171 - A lean air/fuel mixture has been indicated by an abnormally rich correction factor.

- Intake air leaks
- Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Faulty Mass Air Flow (MAF) sensor
- Incorrect Positive Crankcase Ventilation (PCV) hose connection
likely causes:
Dirty air filter of faulty air flow sensor are common causes for the P0171 code of the problem.

P0171 (M)1/1 Fuel System LeanA lean air/fuel mixture has been indicated by an abnormally rich correction factor.

 

[luis]

Did you clean these while on the engine or did you remove them?
Did the jeep only die once? Any sputtering or rough idle prior?
P0171 - A lean air/fuel mixture has been indicated by an abnormally rich correction factor.

- Intake air leaks
- Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Faulty Mass Air Flow (MAF) sensor
- Incorrect Positive Crankcase Ventilation (PCV) hose connection
likely causes:
Dirty air filter of faulty air flow sensor are common causes for the P0171 code of the problem.

P0171 (M)1/1 Fuel System LeanA lean air/fuel mixture has been indicated by an abnormally rich correction factor.

I went ahead and replaces the o2 sensors. I don't have a mass air flow sensor. The exhaust manifold studs were loose so I tightened them up. Air filter is new. When it died it just stop no sputtering. No rough idle.

 

[JPNinPA]

I went ahead and replaces the o2 sensors. I don't have a mass air flow sensor. The exhaust manifold studs were loose so I tightened them up. Air filter is new. When it died it just stop no sputtering. No rough idle.

Loose exhaust will do it. I threw lean bank 1 code and it was a exhaust leak off where the header meets the down tubes. If not checked it could loosen up again. Also if this was where the manifold meets the head the gasket could be worn and leaking despite being torqued to correct specs.

Yes no MAF but air temp sensor.

Loose TPS connection
Crank Position Sensor - often die with no codes.

 

[luis]

Loose exhaust will do it. I threw lean bank 1 code and it was a exhaust leak off where the header meets the down tubes. If not checked it could loosen up again. Also if this was where the manifold meets the head the gasket could be worn and leaking despite being torqued to correct specs.

Yes no MAF but air temp sensor.

Loose TPS connection
Crank Position Sensor - often die with no codes.

Tps is on correct I made sure to check that. Were is the crank sensor located.. I'm not sure if my jeep has an air temp sensor. Is the exhaust gasket and intake gasket one piece? It looks that way

 

[JPNinPA]

Tps is on correct I made sure to check that. Were is the crank sensor located.. I'm not sure if my jeep has an air temp sensor. Is the exhaust gasket and intake gasket one piece? It looks that way

Yes exhaust/intake gasket is one piece.
Crank sensor is on bell housing see below.

Air temp on intake manifold lower right brass sensor.