Apologies for some unclear terms, I have no idea how some of the components are correctly called in english.
I have a 2003 Mazda 2 DY gasoline with about 77k KM driven. Since a couple of months, the fan in the front of the engine bay will start as soon as I turn off the engine. I often read that this is normal, however in the past 9 years I have the car, this only happened very rarely. Since it started in summer, and I've driven a lot Autobahn, I figured it was just cooling down, but it has continued to do so until winter. The fan runs almost exactly for 2 minutes and is pretty loud.
It seems to be somewhat connected to the heater. The car has AC, but it doesn't work and is turned off. I turn the dial to warm when I start driving (it's cold outside!), and it takes a good 5 to 10 minutes until it really warms up. If I leave the dial on max heat, the fan will reproducibly turn on after the drive. If I put it in the middle (between cold/warm) a couple of minutes before I arrive, there's a 50/50 chance it will start.
There are no warning lights on or fuses out. Engine temp is always normal. The fan and the radiator are not obstructed.
Before I drive to the workshop, I at least wanted to do some self-diagnosis.
- Could it be connected to the non-working AC?
- Is it possible that I need to refill the engine coolant? I thought the tank looked kinda empty, but I'd have to check again.
- Other ideas?