P0300 & P0011 codes and O2 sensor readings

[dthames]

2005 3.5L 96K original owner (me), running well then suddenly rough idle and check engine light.

I replaced the bank 1 cam position sensor and both P0300 and P0011 persist, along with the rough idle. Highway performance and mileage seem very close to normal.

With my scan software I recorded O2 sensor voltages and various other data at different speeds. The upstream sensors voltages are not similar at all but this might be a result of some other problem. See this link for that data. I have no good baseline when the car was "normal".
http://pyrodan.privatedata.com/o2-sensors-1.pdf

I am almost ready to replace the car and give it to my adult son. I would like to have it in fair shape for him without taking it to the dealer and spending a wad of cash.

Thanks for any help.
Dan

[dthames]

I changed the coils, the plugs, cleaned out the intake valve timing control solenoids, cleaned the throttle body, replaced throttle body gasket, upper plenum gasket, and lower plenum gasket. It ran smooth but idled too fast and was a bit jerky on the cruise control going down hill. I then did the following 3 things and all is well.

Accelerator Pedal Released Position Learning
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OPERATION PROCEDURE
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch ON and wait at least 2 seconds.
3. Turn ignition switch OFF wait at least 10 seconds.
4. Turn ignition switch ON and wait at least 2 seconds.
5. Turn ignition switch OFF wait at least 10 seconds

Throttle Valve Closed Position Learning
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1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch ON.
3. Turn ignition switch OFF wait at least 10 seconds.
Make sure that throttle valve moves during above 10 seconds by confirming the operating sound

 
Idle Air Volume Learning---------------------------------
PREPARATION

Before performing Idle Air Volume Learning, make sure that all of the following conditions are satisfied.
Learning will be cancelled if any of the following conditions are missed for even a moment.
- Battery voltage: More than 12.9V (At idle)
- Engine coolant temperature: 70 - 100°C (158 - 212°F)
- PNP switch: ON
- Electric load switch: OFF (Air conditioner, headlamp, rear window defogger)
- Steering wheel: Neutral (Straight-ahead position)
- Vehicle speed: Stopped
- Transmission: Warmed-up
----------------------------------------¬----------------------------------------¬-------------
1. Start engine and warm it up to normal operating temperature.
2. Check that all items listed under the topic PREPARATION (previously mentioned) are in good order.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.
5. Repeat the following procedure quickly five times within 5 seconds. a. Fully depress the accelerator pedal. b. Fully release the accelerator pedal.
6. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 20 seconds until the MIL stops
blinking and turned ON.
7. Fully release the accelerator pedal within 3 seconds after the MIL turned ON.
8. Start engine and let it idle. (Idle air volume learning starts)
9. Wait 20 seconds.
10. Rev up the engine two or three times and make sure that idle speed and ignition timing are within the specifications.

Idle Speed Specification:
4 speed AT: 700 +/- 50 rpm (in P or N position)
5 speed AT: