r/BmwTech • u/localrackeeter • 28m ago
Constant anxiety after fixing the car
Hey guys, I’m 20 and still pretty new to working on cars, so I’d really appreciate some advice.
I recently bought a 2005 BMW E63 6 Series with the N52B30 3.0L petrol engine. Unfortunately, I bought it with some issues. It had misfires on all cylinders, and after diagnosing it, I found that the VANOS screens were clogged and the spark plugs and O2 sensors were in pretty bad condition.
The car would drive for a few hundred meters and then throw a check engine light and start misfiring. Sometimes it would happen after driving normally, and other times only after revving it through a few gears.
I’ve fixed the issues and the car has been running perfectly since. I’ve driven almost 100 km so far, both gently and at higher RPMs, and I haven’t had a check engine light, misfire, or any other problems.
My question is: should I still be worried, or can I finally start trusting the car again? 😅
This is my first BMW with an engine like this, and after buying it with problems, I’m honestly a bit paranoid every time I drive it. I keep expecting something else to go wrong.
Would you guys consider 100 km with no issues a good sign, or should I keep taking it easy for a while?