2004 mazada mpv Cooling fans stays on?

Answer 1

Mazda issued a recall for the 2002-2003 MPV Fan Control Module (one module controls both fans). It consistently went bad. I have a 2004 MPV, and though it was not a part of the recall, the cooling fan began behaving erratically several weeks ago. It would seem to run loudly and often even when idling and whether or not the A/C was on. It would even run loudly when the van was first turned on and the engine was still cold. It would often continue to run even after the engine was turned off and the key removed.

After doing some research, I concluded that the fan control module must have failed in mine like so many other people's did. I found replacement parts for around $20 plus shipping online, or about $30 from the local dealer. Since it wasn't a big difference and I wouldn't have to wait, I went with the dealer.

It took about an hour or so to replace on my own. 1) Disconnect the battery and remove it from the engine compartment. 2) Remove the pedestal that the battery sits on (it's connected with four bolts). 3) Disconnect the old FCM from it's mounting (two bolts). 4) Disconnect the three cable from the old FCM (I found it easier to use a small regular screwdriver to press down on the interior connector 'fingers" from the direction opposite the cables). 5) Reconnect the cables, then the mounting bolts, reinstall the battery pedestal and the battery.

This seems to have fixed the problem. No more high running fans or running while the engine is off. I only hope the replacement part doesn't similarly go bad...