I cleared all the codes and adaptations using INPA, and left the car running in the driveway for like 45 minutes.

I was in the car for those 45 minutes, trying to find out how to log RPM, throttle angle, lambda trims, cylinder roughness, and VANOS on INPA, but I did not find anything. :-(

While I was sitting there, I noticed the following:

- The engine turns on without any issues
- The yellow trifecta is ON (Triangle, ABS, Brake)
- I turned the steering wheel all the way left and right several times, but no effect on the trifecta. This also started happening after the radiator issue, and I noticed that the lights usually change to yellow Triangle and ABS, but red Brake warning light, after driving.
- While it warms up, the engine sits at around 750 RPMs
- As the car is warming up, the engine stutters every few seconds. The RPMs go down briefly to almost 500, and then the engine quickly normalizes back up to 750. It does this until the temp needle reaches the top half of the blue marker in that gauge.
- After the gauge moves past the blue zone, the engine purrs like a baby. It is super smooth.
- It sat there for 45 minutes (while I looked through all the INPA screens) completely steady. At this idle, it sits around 700 RPMs.
- It did not throw any codes while it sat there idling.

I have not driven it yet as I have been busy at work and am still figuring out what to use to log that stuff I listed above. Someone recommended a software called TrustO, but the laptop I use for the car is too old (WinxP), so I gotta figure that out.

__________________
2001 BMW X5 3.0i, Automatic, Gasoline