Quote:
Originally Posted by sleepysnake
Three_thirty_I, do you have an update on your situation? I read on a different forum that someone had the same problem. They replaced the thermostat and had no increase in temp until they 'reset the adaptions'.
I have the same problem. Stuck at around 75-85c. Considering this is the 'high output mode' I guess there shouldn't be a problem with pushing the engine with this coolant temperature.
That is my main worry as my fuel economy seems to be fine. Getting my Performance Exhaust tomorrow so I want to be able to push it!
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Hi there,
I actually just replied to your PM a few minutes ago, but to answer your question. Sadly no, I am still struggling with these cooler than normal operating temperatures. I am curious about the resetting of adaptations, but in my case it is another annoying issue - just after I replaced the thermostat I took the car to an ECU specialist and they actually changed and programmed another ECU for my car with all adaptations reset. Made no difference. And I had a bit of a battle with these people at this ECU place arguing that there was nothing wrong with my coolant temps - they were basically saying that the "internet is wrong". I have seen too many vids of other N52 engined cars that show the correct coolant temps, and a family member has fairly recently purchased a used X3 which has an N52 2.5i and it also runs at the correct temps. In fact, it manages its temps much like my E46 - if you drive sedately, the temps are on the higher end of the scale (obviously the E46 M54 runs a bit cooler than the N52), and then if you drive a bit harder it brings the temps down a bit. On my car, it mostly stays around the 80 degree C mark, but randomly it might briefly climb to 96 degrees and then shoot back down again.