The fan motors keeps running after car is shut off. Also sometimes fans start when car is started cold.

My issue came down to the cooling fan motors went out and needed to be replaced and now runs like a dream.

coolant temp sensor tells the computer how hot or cold the engine is so it can regulate the idle and fuel mixture, when it fails there usually is no cooling fan and you will have trouble starting the engine and keeping it running.

try and put power direct to the fan motor

check battery volt & check line ware to system.

the temperature cooling sensor, The sensor's output is monitored by the engine computer to regulate various ignition, fuel and emission control functions, and to turn the radiator-cooling fan on and off as needed. check this first ! also check the fan relay in relay box. it may be sticking in the on position. hard to say without being there. but try the above things. good-day ! the fans come on if a/c is on.

Hello PJ.

Usually when this happens the electric cooling fan on the radiator isn't coming on.
As you are moving air is going through the rad cooling it. When stopped or moving slowly there isn't enough airflow so the fan should come on.
Possible problems are a blown fuse, something jamming the fan blade, bad motor for the fan, bad wiring connections, bad relay or a sensor not detecting proper temperatures.
If the fuse is blown something caused it to do so, most likely a jammed fan or shorted out motor.
To begin, check the fuse, make sure the fan isn't jammed up with something, check wiring for shorts and bad connections.

There are the possible problems as you have asked.

Thank you for using FixYa.
KL

No, it's the fan module itself. They were recalled but not ALL of them. Mine did the same thing and yet it wasn't part of the recall, go figure. The problem is that if it runs all the time it will run down your battery. The other issue is that sometimes it won't run at all and can cause your engine to overheat. I had mine replaced, cost me a couple hundred bucks. Hopefully yours is under the recall. Check with your mazda dealer and don't let them feed you a line of ****. It's a known issue.

the cooloing fan comes on also whenever the a/c clutch engages, as well as when the temp hits about 200 degrees F

this is the interior fan motor and housing.The rattle may be a piece of debris in there(i.e. leaf or a piece of paper)or a thing in the electric motor called a brush.Run the fan at different speeds and if the sound gets quicker with the fan,its probably just a bit of debris.The other,the fan wont run as well and may may need replacing when it gives up and wont work

I have a 2003 MPV with the same problem. There was a recall in 2004 to replace the fan controller module, which apparently would fail regularly. I had mine replaced under the recall although there were no symptoms at the time. Now it appear that the replacement has failed, but I've already used the recall and you can only do it once. Even though your warranty is up the recall still applies if your car is of the model that qualifies. Call your dealer, and he can tell you if you are eligible. It is almost certainly the problem. I don't care how you drive or what the temperature is, your fan shouldn't run immediately after starting or run for more than a couple of minutes after you shut it off.