i recently purchased an 04 M3 that had some known issues (suspension damage and a constantly running fan) the ppi inspection revealed i had a bent front strut and a bent rear control arm on the same side the windshield washer pump was also worn out and not operating properly. but before i even took the car to the ppi i noticed the electric fan was running full speed all the time starting just a minute after startup and not stopping till the car was shut off. i did some quick research while waiting on the car to warm up and saw that the lower temp sensor was the potential culprit. after purchase i ordered the sensor immediately. i hadn't had time to install the sensor till recently and when i did it did not fix the issue. anyone have any good tips on debugging this issue and any other potential causes.