Radiator Fans Stay on?
#1
Radiator Fans Stay on?
hey guys im still pretty new to my car so i was wondering when the car is shut off are the radiator fans still supposed to run?
I had no clue if they were supposed to or not but when i put the key back in the ignition and switched it to the on position the fans stopped...
im just a little paranoid because i just got the MSP16 reflash today and today was the first time i noticed the fans comming on after the car was shut off.
I had no clue if they were supposed to or not but when i put the key back in the ignition and switched it to the on position the fans stopped...
im just a little paranoid because i just got the MSP16 reflash today and today was the first time i noticed the fans comming on after the car was shut off.
#4
ジョーイ
iTrader: (1)
yeah but the problem wit that is the fan is known to kill the battery also because its using battery power that mean more work for your alternator on start up and can also go out. but like you said you put the key back in and shuts off right? click it to on possition and back to off it will stay off.
#8
Lubricious
Join Date: Oct 2003
Location: SF Bay Area, California
Posts: 3,425
Likes: 0
Received 4 Likes
on
4 Posts
yeah but the problem wit that is the fan is known to kill the battery also because its using battery power that mean more work for your alternator on start up and can also go out. but like you said you put the key back in and shuts off right? click it to on possition and back to off it will stay off.
I would advise against "fooling the fan". This happens for a reason -- when the engine needs to shed heat. Better to spend a bit of battery power here.
If I'm parked at home I will pop the hood to help it out. Regardless, I let the fan run until it decides to shut off. I've had times where it seemed to go on for 20 minutes (didn't really time it).
Not a major problem for a healthy battery; iirc, the fan is pulling something like 7 amps. A 20 minute run is only about 5% discharge for 45 amp-hour battery. You get that much discharge just letting the car sit for a couple of days.
If you're driving in extreme heat, you can assist by spending the last 10 minutes or so driving at low power and with few stops, and AC off. This will help bleed heat more effectively than the fan run-on. I know it's not always possible but the general idea is not to flog it right before shutdown in high temps. And it's always a good idea to kill the AC at least a couple of minutes before you shut down. It helps dry the evaporator coils and avoids mildew growth and "smelly AC syndrome". The more humidity you have the more this last bit applies.
#9
Out of NYC
iTrader: (1)
yeah but the problem wit that is the fan is known to kill the battery also because its using battery power that mean more work for your alternator on start up and can also go out. but like you said you put the key back in and shuts off right? click it to on possition and back to off it will stay off.
The fan turns itself on for a reason ...
Thread
Thread Starter
Forum
Replies
Last Post
Shankapotamus3
Series I Trouble Shooting
28
03-14-2021 03:53 PM
GranTouTou
Series I Wheels, Tires, Brakes & Suspension
0
09-30-2015 06:11 AM
Evan Gray
Series I Trouble Shooting
0
09-26-2015 12:30 PM