What did you do for your M3 today?

[ramzM3]

ah man too bad it wasn't a quick fix with the fan clutch. I would look at the radiator, make sure any debris is cleared out like mentioned earlier. Do you know if the radiator is the original unit?

As far as oil temps those look fine for high ambient temps. Yesterday the ambient temps the car was reporting was 100+ in traffic in the highway my oil temps would move smidge to right of center, but coolant temps was 1/2 mark.

Yeah, I was in my happy place tinkering with the ///M and thought I was fixing something. Yes, this is the original radiator and I was thinking about getting the garden hose out and spraying some water through the fins to see if I can remove any debris I can't see. Maybe I could try some fin cleaner solution and see if that makes any difference. Thanks!

[ramzM3]

Which temp sensor, upper or lower? And does it still have the original rad?

I think it was the lower temp sensor (it looks "shiny/newer"), I didn't realize there was an upper one as well. Yes, I still have the original rad.

[elrichmeister]

Ugh, I kind of suspected that when I removed the original fan clutch and it didn't spin freely or easily, just like when I assembled the new one. Ok, I'll continue to search for the real problem. Thanks!

ah man too bad it wasn't a quick fix with the fan clutch. I would look at the radiator, make sure any debris is cleared out like mentioned earlier. Do you know if the radiator is the original unit?

As far as oil temps those look fine for high ambient temps. Yesterday the ambient temps the car was reporting was 100+ in traffic in the highway my oil temps would move smidge to right of center, but coolant temps was 1/2 mark.

[Slideways]

Hopefully, it is something other than the thermostat and water temp sensor, because both of those were replaced a couple of weeks ago when it was in the shop for running warm and VANOS replacement. They told me when I picked it up, that during their test drive after the work, they suspected the fan clutch may be going bad. That's why I did the fan clutch replacement.
Thanks. I'll keep looking!

Which temp sensor, upper or lower? And does it still have the original rad?

[ramzM3]

Whoa, Hot! yer i would be investigating the new clutch fan is working properly or the cooling system is failing, maybe the thermostat ??

Hopefully, it is something other than the thermostat and water temp sensor, because both of those were replaced a couple of weeks ago when it was in the shop for running warm and VANOS replacement. They told me when I picked it up, that during their test drive after the work, they suspected the fan clutch may be going bad. That's why I did the fan clutch replacement.
Thanks. I'll keep looking!