Fans cooling after switch-off. Separate battery wiring the solution?
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Joined: Aug 2011
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From: Kuwait
Fans cooling after switch-off. Separate battery wiring the solution?
Hi guys, as I live in Kuwait, and summer is here, the fans kick in around 2 mins after I switch off my car. I think they run on for 20 minutes or so. The weather here gets pretty crazy, nowadays it is around 42 deg C and coupled with traffic you can imagine.
So the problem is my battery seems to die out very quickly. And it has been doing so on occasion so I am getting peeved.
Mind you it is a new battery purchased from the AD in Sep 2011.
My questions are those:
1. Am I crazy to think that I can install a secondary battery and just wire the fans to run on those? Especially after the car is switched off?
2. Is there any way to "program" how much the fans stay on and at what intervals when the car is switched off?
3. I realize I can just run a different battery, people keep recommending Varta, and I will look into that. But, for now, I am really interested in adding a secondary battery to power the fans especially when off so that the car always has juice when I want to start it whenever.
4. Any tips, tricks, or solutions from past experiences are welcome.
Let me guys know what you think!!
Few pics of the Targa with her mates to get the thread rolling and pleasing to the eye.
So the problem is my battery seems to die out very quickly. And it has been doing so on occasion so I am getting peeved.
Mind you it is a new battery purchased from the AD in Sep 2011.
My questions are those:
1. Am I crazy to think that I can install a secondary battery and just wire the fans to run on those? Especially after the car is switched off?
2. Is there any way to "program" how much the fans stay on and at what intervals when the car is switched off?
3. I realize I can just run a different battery, people keep recommending Varta, and I will look into that. But, for now, I am really interested in adding a secondary battery to power the fans especially when off so that the car always has juice when I want to start it whenever.
4. Any tips, tricks, or solutions from past experiences are welcome.
Let me guys know what you think!!
Few pics of the Targa with her mates to get the thread rolling and pleasing to the eye.
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From: CT
I would buy a CTEK battery maintainer and charge the battery every other day. It would keep your battery fresh when you travel as well. Hardwire it to the battery so it is a easy clip on and off. I love mine.
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In that sort of killer heat, sounds like you stock battery is taking a beating. You cannot change the cycle from what i know, nor should you since you want the engine to cool down.
You could tandem a battery but where would you put it? You might be avle to get an alternative battery (optima for instance) that could provide better temp tolerance and improved energy density.
Did the battery handle the load fine when it was new?
Cheers
Mike
You could tandem a battery but where would you put it? You might be avle to get an alternative battery (optima for instance) that could provide better temp tolerance and improved energy density.
Did the battery handle the load fine when it was new?
Cheers
Mike
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Joined: Oct 2006
Posts: 9,681
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From: CT
I would buy a CTEK battery maintainer and charge the battery every other day. It would keep your battery fresh when you travel as well. Hardwire it to the battery so it is a easy clip on and off. I love mine.
http://www.amazon.com/gp/product/B00...ls_o01_s00_i00
http://www.amazon.com/gp/product/B00...ls_o01_s00_i00
Thread Starter
Advanced
Joined: Aug 2011
Posts: 79
Likes: 0
From: Kuwait
I would buy a CTEK battery maintainer and charge the battery every other day. It would keep your battery fresh when you travel as well. Hardwire it to the battery so it is a easy clip on and off. I love mine.
http://www.amazon.com/gp/product/B00...ls_o01_s00_i00
http://www.amazon.com/gp/product/B00...ls_o01_s00_i00
By the way, all the cars are parked in shade. The pics above were from one day where we needed the shaded stretch of drive-way for a dinner party.
In that sort of killer heat, sounds like you stock battery is taking a beating. You cannot change the cycle from what i know, nor should you since you want the engine to cool down.
You could tandem a battery but where would you put it? You might be avle to get an alternative battery (optima for instance) that could provide better temp tolerance and improved energy density.
Did the battery handle the load fine when it was new?
Cheers
Mike
You could tandem a battery but where would you put it? You might be avle to get an alternative battery (optima for instance) that could provide better temp tolerance and improved energy density.
Did the battery handle the load fine when it was new?
Cheers
Mike
I am definitely going to look into a new battery that has higher tolerance but I wanted to learn if anyone out there with similar problems has had a different approach.
As for a secondary battery for the fans, I was thinking it all depends on the wiring first but in the end it could end up in the front boot just like the primary. I do not need space in the boot and I use the back seats for groceries!
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It seems that there might be some other issue as long as you're not parking you car very frequently when it blows the fans for 20 mins each time so you might want to check that your alternator is charging properly before you do anything else.
In any case.
Trickle charger is also my recommendation (two batteries seems like an overkill as eventually it will drain also) since it seems you park in a place where you have an outlet.
Other solution you might want to try (this is assuming you're parked in a secure location) is to open the decklid for a while after you park the car. This should shorten the cooling time of the engine compartment, thus draining the battery less.
In any case.
Trickle charger is also my recommendation (two batteries seems like an overkill as eventually it will drain also) since it seems you park in a place where you have an outlet.
Other solution you might want to try (this is assuming you're parked in a secure location) is to open the decklid for a while after you park the car. This should shorten the cooling time of the engine compartment, thus draining the battery less.
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From: Vancouver, BC
Where is your temp gauge when driving the car during the day?
I guess the air is so warm that the cool-down cycle with the fan runs longer than usual since the air does not take away as much heat from the engine.
Cheers,
Mike
I guess the air is so warm that the cool-down cycle with the fan runs longer than usual since the air does not take away as much heat from the engine.
Cheers,
Mike
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Drifting
Joined: May 2006
Posts: 3,074
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From: Paris
Marhaba, in my personal opinion:
If the time you describe of 2 minutes after shut off, is accurate, it is not the heat from the car only, that is triggering the fans. The rear auxliliary fan has two speeds and is triggered when engine is running, 1st speed ON @ 50 degrees celsius OFF @ 45. High speed ON @ 62, OFF @ 57. When you shut engine, the high speed rear fan goes ON when temp reaches 75 *C and OFF at 68*C . You said two minutes after. so the car is fine, it is the extra nature's heat that is triggering the fan surely from Sun-floor, and not engine heat only.
Normally when you shut off the car, the rear blower comes on after a few seconds
The rear heater blower electric drainage is low, and 20 minutes should have minimal effect on the battery.
The battery I use is Bosch S5-007. If you changed yours and it is dying, I am sure Finn gave you the best answer, alternator.
That said, you need to change the regulator on the alternator , a small set of twin brushes, and not the whole 5 kilo alternator, especially if you are asking for delivery to Kuwait.
I work at the boursa too if that is where the name comes from...is it?
Let us know
If the time you describe of 2 minutes after shut off, is accurate, it is not the heat from the car only, that is triggering the fans. The rear auxliliary fan has two speeds and is triggered when engine is running, 1st speed ON @ 50 degrees celsius OFF @ 45. High speed ON @ 62, OFF @ 57. When you shut engine, the high speed rear fan goes ON when temp reaches 75 *C and OFF at 68*C . You said two minutes after. so the car is fine, it is the extra nature's heat that is triggering the fan surely from Sun-floor, and not engine heat only.
Normally when you shut off the car, the rear blower comes on after a few seconds
The rear heater blower electric drainage is low, and 20 minutes should have minimal effect on the battery.
The battery I use is Bosch S5-007. If you changed yours and it is dying, I am sure Finn gave you the best answer, alternator.
That said, you need to change the regulator on the alternator , a small set of twin brushes, and not the whole 5 kilo alternator, especially if you are asking for delivery to Kuwait.
I work at the boursa too if that is where the name comes from...is it?
Let us know
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Thread Starter
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Joined: Aug 2011
Posts: 79
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From: Kuwait
I am also guilty of being one of those who have disabled the rear spoiler from raising.
I honestly do NOT think this is causing so much trouble. 
I will have my phonecam handy and snap pics.
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Joined: Aug 2011
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From: Kuwait
Hi there sorry I missed this post.
Thanks for all the technical info, it is greatly helpful and I appreciate it!
I will check the alternator brushes and report back soon.
I charged the battery a couple of days ago and so far no problems. Will keep you guys updated when I have the time to address this.
As for the nickname, yes! Boursa is from "stock exchange" and it is just something I loved when my dad called me 'boursachi' to grill me back in the day.
Thanks for all the technical info, it is greatly helpful and I appreciate it!
I will check the alternator brushes and report back soon.
I charged the battery a couple of days ago and so far no problems. Will keep you guys updated when I have the time to address this.
As for the nickname, yes! Boursa is from "stock exchange" and it is just something I loved when my dad called me 'boursachi' to grill me back in the day.
Marhaba, in my personal opinion:
If the time you describe of 2 minutes after shut off, is accurate, it is not the heat from the car only, that is triggering the fans. The rear auxliliary fan has two speeds and is triggered when engine is running, 1st speed ON @ 50 degrees celsius OFF @ 45. High speed ON @ 62, OFF @ 57. When you shut engine, the high speed rear fan goes ON when temp reaches 75 *C and OFF at 68*C . You said two minutes after. so the car is fine, it is the extra nature's heat that is triggering the fan surely from Sun-floor, and not engine heat only.
Normally when you shut off the car, the rear blower comes on after a few seconds
The rear heater blower electric drainage is low, and 20 minutes should have minimal effect on the battery.
The battery I use is Bosch S5-007. If you changed yours and it is dying, I am sure Finn gave you the best answer, alternator.
That said, you need to change the regulator on the alternator , a small set of twin brushes, and not the whole 5 kilo alternator, especially if you are asking for delivery to Kuwait.
I work at the boursa too if that is where the name comes from...is it?
Let us know
If the time you describe of 2 minutes after shut off, is accurate, it is not the heat from the car only, that is triggering the fans. The rear auxliliary fan has two speeds and is triggered when engine is running, 1st speed ON @ 50 degrees celsius OFF @ 45. High speed ON @ 62, OFF @ 57. When you shut engine, the high speed rear fan goes ON when temp reaches 75 *C and OFF at 68*C . You said two minutes after. so the car is fine, it is the extra nature's heat that is triggering the fan surely from Sun-floor, and not engine heat only.
Normally when you shut off the car, the rear blower comes on after a few seconds
The rear heater blower electric drainage is low, and 20 minutes should have minimal effect on the battery.
The battery I use is Bosch S5-007. If you changed yours and it is dying, I am sure Finn gave you the best answer, alternator.
That said, you need to change the regulator on the alternator , a small set of twin brushes, and not the whole 5 kilo alternator, especially if you are asking for delivery to Kuwait.
I work at the boursa too if that is where the name comes from...is it?
Let us know
