Can anyone help please I’ve just replaced the thermostat on my 1999 328 m52 engine and it’s seems to not be cooling down this was the thermostat that I took off it has nothing inside is there a reason why?......When I got the car the fan was broke and someone had cut all the wires well I can’t find any anyway. so I put a electric fan on a switch that’s when I noticed the thermostat wasn’t working the car temp would just keep dropping but now I have the new one in it got to 92 I put my fan on and it just kept going up? Any help appreciated