Quote:
Originally Posted by squidge
No warning lights at all. After more research, looks like a lot of the N54/55 guys have overheating and limp mode issues at the track related to oil temps, and on a 90 degree day and pushing the car hard I may have been getting my N51 just into that limp mode threshold as well.
|
Running with the heat on will help keep down coolant temps. Oil temps won't drop much though.
On my N51 (auto too!) my coolant temps were never troubling. I've never seen it above 99c.
I would get power cuts with my auto 128i on track after about 15 minutes. Turns out the DME was reducing power due to high brake temps (an estimated number based on driving conditions). No lights came up on the dash when this happened on track. But, I believe a code was stored.
Read through this thread a bit:
http://www.e90post.com/forums/showth...=944126&page=3
Once I coded that off I was able to really push the car. That is when I found out that the stock oil cooling was completely insufficient for using the car in this manner. Oil temps were hitting 290f. The DME pulls power in stages once oil temps begin to rise over 270f. You wont get a light on the dash until the car goes into full limp mode at around 300f.
I would log temps next time you go out. Look into retrofitting an oil cooler if you expect to keep driving the car hard. I actually have the OFH and OTH for sale along with an oil cooler if your interested!
Also,
http://www.e90post.com/forums/showthread.php?t=412156