Electrics Cooling fans - Civinfo
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post #1 of 24 (permalink) Old 29th May 2010, 12:41 Thread Starter
 
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Cooling fans

Hi i have a bit of a problem, both my cooling fans are on all the time(with ignition on!). i have been told it might be a relay problem, but i cant seem to find them.
Any ideas on the problem or the location of the relays would help!
2.2cdti
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post #2 of 24 (permalink) Old 29th May 2010, 14:06
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Originally Posted by sotonsmut View Post
Hi i have a bit of a problem, both my cooling fans are on all the time(with ignition on!). i have been told it might be a relay problem, but i cant seem to find them.
Any ideas on the problem or the location of the relays would help!
2.2cdti
Relays are under the bonner on the right next to the battery ?
Could also be a faulty water temp sensor..there are issues with corrosion.
Water levels OK ?
Water pump OK ?



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post #3 of 24 (permalink) Old 29th May 2010, 17:22 Thread Starter
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Relays are under the bonner on the right next to the battery ?
Could also be a faulty water temp sensor..there are issues with corrosion.
Water levels OK ?
Water pump OK ?
dash temp is the same as normal so dont think its the pump or sender, but if i pull the 40 amp fuse(fan pic) in the box next to the air filter they still stay on. making me think its the relay or temp sender on the AC side!
Are the relays next to battery in the fuse box or outside of it!

Last edited by sotonsmut; 29th May 2010 at 18:03.
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post #4 of 24 (permalink) Old 29th May 2010, 17:56
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Originally Posted by sotonsmut View Post
dash temp is the same as normal so dont think its the pump or sender, but if i pull the 40 amp fuse(fan pic) in the box next to the air filter they still stay on. making me think its the relay or temp sender on the AC side!
But if you pull the right relay they should be dead.. they wont get power

On the fords there are two temp sensors.
One for the dash and one for the ECU.
I believe there are two temp sensors for the Honda as well.
I'll pop outside later and see what I got.



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post #5 of 24 (permalink) Old 29th May 2010, 18:29 Thread Starter
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But if you pull the right relay they should be dead.. they wont get power

On the fords there are two temp sensors.
One for the dash and one for the ECU.
I believe there are two temp sensors for the Honda as well.
I'll pop outside later and see what I got.
I plulled the small gray relay in the under bonnet fuse box and only one went off!
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post #6 of 24 (permalink) Old 29th May 2010, 19:35
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when both of the fans are blowing, its probably that the car is doing dpf cleaning.

At least that is what my dealer told me.
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post #7 of 24 (permalink) Old 29th May 2010, 21:11
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Hopefully I've got the answer. This is not for cooling but to pull air through the air con matrix, try turning the air con off and the fans should go off as well.
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post #8 of 24 (permalink) Old 30th May 2010, 01:40 Thread Starter
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Hopefully I've got the answer. This is not for cooling but to pull air through the air con matrix, try turning the air con off and the fans should go off as well.
Unfortunately no!! turned off AC /heater completely and still on.IF it is DPF cleaning (i'm sure i dont have) how long does it last. As been going for days!!!
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post #9 of 24 (permalink) Old 30th May 2010, 06:04
 
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my DPF cleaning only takes +/-20km (motorway).
The car only does it once every 500km.
So it doesnt keep on for days.
The fans are only working then when driving slower than 50km/h
i hope this helps
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post #10 of 24 (permalink) Old 30th May 2010, 08:05
 
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Temperature sensor, had problems twice with fans running
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post #11 of 24 (permalink) Old 30th May 2010, 11:12 Thread Starter
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Temperature sensor, had problems twice with fans running
Is that the sensor at the bottom of the Radiator.
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post #12 of 24 (permalink) Old 30th May 2010, 22:25
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Unfortunately no!! turned off AC /heater completely and still on.IF it is DPF cleaning (i'm sure i dont have) how long does it last. As been going for days!!!
There are no DPF on the UK civics

..sorry been out all day down the inlaws.
Will look on monday.... see if there are two relays or something...dont want to lose both if one packs up.
Looking more like temp sensor though.




Last edited by Relic; 30th May 2010 at 22:27.
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post #13 of 24 (permalink) Old 7th June 2010, 22:27 Thread Starter
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Update! dissconected one of the fans(to save on battery) so the only one working is the one that works off the small grey relay in the underbonnet fuse box.Now this one is now running on after the ignition is turned off by up to a minute and a half!
Any ideas!!
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post #14 of 24 (permalink) Old 9th June 2010, 19:52
 
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I've got exactly the same irritating problem on my 06 CTDI, been going for about 2 weeks and I'm stumped. Doesn't help much I know but I can empathise with you.
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post #15 of 24 (permalink) Old 9th June 2010, 21:19
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Quote:
Originally Posted by sotonsmut View Post
Update! dissconected one of the fans(to save on battery) so the only one working is the one that works off the small grey relay in the underbonnet fuse box.Now this one is now running on after the ignition is turned off by up to a minute and a half!
Any ideas!!
I know there are some new turbos that have a water feed.
Turbos got destroyed by people burning around and switching the engine off imeediately before the turbo had cooled down.
People are told in the manual to let the engine idle for a minute or two before turning the engine off...but few do.
RTFM is a swear word
This reduced gas temperature at idle cooled the turbo down.

Perhaps it has soemthing to do with this ??



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post #16 of 24 (permalink) Old 15th January 2011, 12:27
 
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Did anyone sort this???

I have both fans running on a cold engine as soon as the ingnition is on (engine off). Aircon Off.

Please help
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post #17 of 24 (permalink) Old 15th January 2011, 13:30
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Turn the aircon/heater/climate off.... see if the fans turn off.
Tell us what the outside air temp says on the dash.



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post #18 of 24 (permalink) Old 16th January 2011, 11:22
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DPF is fited to some UK cars since 2009 model, but not all.
You should know if you bought new as it would have cost a bit more!
If you have go for a run and it should clear it, short runs won't complete the cycle so keeps going for longer.
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post #19 of 24 (permalink) Old 16th January 2011, 18:15
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Quote:
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DPF is fited to some UK cars since 2009 model, but not all.
You should know if you bought new as it would have cost a bit more!
If you have go for a run and it should clear it, short runs won't complete the cycle so keeps going for longer.
The DPF was only fitted as standard in the UK on the i-DTEC engines and not our civic i-CTDI.
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post #20 of 24 (permalink) Old 1st March 2011, 20:54
 
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its your temp sender. probably ect2 (bottom of radiator), unplug it and see if the fans stop.
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