I just got done with timing job on my 04 f150 5.4. Engine has no noise to indicate a mechanical issue. I used cloyes timing components check timing makes over and during the job. Get everything together turn the engine over without fire to prime all components. When started ran fine till warm then rough idle and codes was o2 lean codes on both banks. Any ideas if the phasers are junk or something else going on.

 

What are the actual code numbers? Lean codes are set by fuel trims. Typical is P0171 and/or P0174.

How long did you let it run with the rough idle? Is it drivable?

The more info the better. All you have here is "did timing job, got O2 codes, rough idle when warm".

 

It ran fine first start for about 15 to 20 minutes cut it to clean up. Restart ran maybe 5 minutes the idle dropped sound like misfire but no misfire codes just codes related to o2 sensor one is p2195 and other is p2197. Motor has no ticking or any sound of metal hitting any actually sound good besides the rough idle. I have changed out all spark plugs and coils using Motor craft parts. Also break is really stiff have check the break booster line it has vac but does not feel very strong.

 

Those aren't lean codes, they are O2 codes that could come from many different sources. Lean, rich, shorted, open circuit. I would focus on the wires to the O2 sensors first. Make sure that you didn't pinch or cut any.

They're both sensor 1. I think it basically means that the PCM is not getting the signal it expects from the sensors in order to run closed loop. I would guess that it might, maybe, be cam timing related. Hard to tell, it's a really generic code. Good luck.

Not an expert, just good at finding code data.

https://www.obd-codes.com/p2195

https://www.obd-codes.com/p2197

 

Yeah the codes say o2 lean bank 1 and bank 2. Which I know it the o2 before the cat. Ive looked all over for wire left off haven't found anything. The only thing i could with the timing is that the phaser may not be working or vct solenoid are not working. With the the cams working off the crank that been mechanical if timing was off i would think the valves would hit the piston or something. I double and triple checked timing marks and used the tool to set crank position for timing. But thanks for the help.

 

Check your PCV hoses. Maybe you'll get lucky.

Potential causes of a P2195 code include:

Oxygen (O2) or A/F ratio sensor or sensor heater malfunction
Open or short in O2 sensor circuit (wiring, harness)
Fuel pressure or fuel injector problem
Faulty PCM Intake air or engine vacuum leaks
Faulty fuel injector(s)
Fuel pressure too high or too low
PCV system leak/fault
A/F sensor relay faulty
MAF sensor malfunction
ECT sensor malfunction
Fuel pressure too low
Fuel leak
Air suction in air intake system

Read more at: https://www.obd-codes.com/p2195
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How powerful is your scan tool, if you have one.

Diagnostic Steps & Possible Solutions

Use a scan tool to get readings from the sensor, and monitor the short and long term fuel trim values and O2 sensor or Air Fuel Ratio sensor readings. Also, look at the freeze frame data to see the conditions at the time the code was set. That should help determine if the O2 AF sensor is operating correctly. Compare with manufacturers values.

Read more at: https://www.obd-codes.com/p2195
Copyright OBD-Codes.com

 

Using maxicheck mx808. Its pretty good one but not real firmly with its a friend's.