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It sounds like you may have a malfunctioning component in your heating system that is causing the fan to continue running even when the car is turned off. Pulling fuse 47, which controls the climate control blower and ignition 3 relay, stopped the fan from running but may have also caused other issues in the system. Replacing the fuse may not fix the problem, it may be necessary to have a mechanic diagnose and repair the specific component causing the issue.
this fan is meant to' run on' after turning ignition off to cool down the fuel injectors etc so the fuel does'nt evaporate whilst the engine cools down .Two things here 1. Does the fan NEVER stop, it may run for 5-10 mins at most , if it runs longer than this then the timer relay may need replacing .2 If the fan goes off and then your battery is flat later i'd say it was the condition of the battery at issue as may not be holding the charge , so you can get the battery condition checked easily , if it is the battery at fault get the alternator charge rate checked as well as this may be the cause of poor battery condition .Hope that helps
In all probability, the fan is working erratically, or the air conditioning fan is not working at all. Does the vehicle run cooler when the air is off?. Do two things: 1) Check that the fan works after the vehicle has idled for a few minutes, and shows a normal temp (halfway on the gauge). 2) Check that the secondary /Air conditioning fan trips as soon as the A/C is turned on, even if the vehicle is cool. On the event that either fan does not work, unplug the connector to the fan and check that it receives electricity. If it does, the fan is bad, and if it doesn't, something is wrong with the wiring or the sensor.
engine thermostat is a triggering devise to make the fan's work. seconds before it stop when the engine is off, normal for the engine high temperature but it's sign abnormality in the system. fans also runs when the air conditioning unit is "on" to keep the engine operating temperature for its additional load from the unit. need to check if the air conditioning is in "on" position, especially the engine thermostat it may be stuck.
connection on temp coolant sensor must be bad the wax the keeps pins in place will melt causing poor connection ac to stop working and fans .. check connection on fans two yellow wires .. also wax melts causing poor connection
Per your description, I believe you may have a blower fan relay that is stuck closed. Remove the relay from the under-hood fuse center and see if the fan stops. If it does stop, put the relay in slowly and see if you here the relay "click" and the fan come back on. Let me know. Regards,
I have a 2008.5 Mazda 3 GS Sport and when you turn the air flow selector to windows or windows/floor, the air condition will turn on automatically. (Can't turn it off.)
Fan runs even when ignition off
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