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2009 Honda Civic Cooling fan running continuously #4105679 05/24/16 07:31 PM
Joined: Oct 2011
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Doog Offline OP
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Radiator fan runs continuously AC blows warm...cool maybe. Where do I look?

I know nothing about AC systems. shocked

Re: 2009 Honda Civic Cooling fan running continuously [Re: Doog] #4105696 05/24/16 07:43 PM
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Rand Offline
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Originally Posted By: Doog
Radiator fan runs continuously AC blows warm...cool maybe. Where do I look?

I know nothing about AC systems. shocked


?? if your ac is on the fan will be on.. what are you asking?

Better description of problem?


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Re: 2009 Honda Civic Cooling fan running continuously [Re: Doog] #4105698 05/24/16 07:43 PM
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CT8 Offline
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For what it costs find a good AC shop to diagnose the problem due to the AC being warm.


2015 F150 2.7
2018 F350 6.2
Re: 2009 Honda Civic Cooling fan running continuously [Re: Doog] #4105699 05/24/16 07:44 PM
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xxch4osxx Offline
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Low refrigerant possibly.


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Re: 2009 Honda Civic Cooling fan running continuously [Re: Doog] #4105702 05/24/16 07:46 PM
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Mr Nice Offline
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Your condenser fan always runs if your A/C is on.
Radiator fan cycles off and on.

Maybe a small shot of refrigerant from DIY can ?

Re: 2009 Honda Civic Cooling fan running continuously [Re: xxch4osxx] #4105742 05/24/16 08:31 PM
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Bud_One Offline
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Originally Posted By: xxch4osxx
Low refrigerant possibly.


+1 - that would be my best guess as well


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Re: 2009 Honda Civic Cooling fan running continuously [Re: Mr Nice] #4105863 05/25/16 12:01 AM
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Lolvoguy Offline
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Originally Posted By: Mr Nice
Your condenser fan always runs if your A/C is on.
Radiator fan cycles off and on.

Maybe a small shot of refrigerant from DIY can ?


Did that once to my 97 Escort. Provided A/C that was far colder and efficient than any Cadillac/ Volvo we rented.

When the A/C turns warm on the Focus, I'll probably do the same with it


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Re: 2009 Honda Civic Cooling fan running continuously [Re: Doog] #4105960 05/25/16 06:20 AM
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madRiver Offline
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Not sure if corrected by 2009, however Honda/Acura had ac relay problems (made in USA part smile ) in my 2007 mdx and had similar symptoms. It was a $9 fix to buy a new ac relay from dealer. Same issue wife's Subaru that mechanic did not diagnose testing everything. Spent $6 on aftermarket relay fine.

Just saying a cheap try before you take it in. Don't blindly add freon.

Last edited by madRiver; 05/25/16 06:20 AM.
Re: 2009 Honda Civic Cooling fan running continuously [Re: Mr Nice] #4106040 05/25/16 08:08 AM
Joined: Oct 2010
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MarkM66 Offline
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Originally Posted By: Mr Nice
Your condenser fan always runs if your A/C is on.
Radiator fan cycles off and on.

Maybe a small shot of refrigerant from DIY can ?


Little cars usually have just one fan.

Re: 2009 Honda Civic Cooling fan running continuously [Re: Doog] #4106043 05/25/16 08:10 AM
Joined: Sep 2007
Posts: 1,398
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JMJNet Offline
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If the AC relay is bad, the clutch will not engange.
So, check that first.

Next, you need to get what we call the AC Gauge Manifold.
This is used to measure the low pressure and high pressure of the AC system. They have to be correct depending on the ambient temperature. If not, then there is something wrong.

You need add some refrigerant to top it off and see if the pressure can go steady. If not, then there is a leak somewhere. You need to identify the leak and fix it.

Make sure the clutch can engange and not seizing after there are enough pressure of refrigerant.
If it seized, then you have to change the compressor or just the clutch depending if it is just the clutch.
Now, price of clutch is sometimes more than the whole compressor difference is you have to open the whole system when changing the compressor and you have to do the proper flush and vacuum and replace the dryer.
Then you have to decide if you want to change the condenser.
A lot of the newer design condenser is not flushable.


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Re: 2009 Honda Civic Cooling fan running continuously [Re: MarkM66] #4106065 05/25/16 08:54 AM
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gathermewool Offline
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Originally Posted By: MarkM66
Originally Posted By: Mr Nice
Your condenser fan always runs if your A/C is on.
Radiator fan cycles off and on.

Maybe a small shot of refrigerant from DIY can ?


Little cars usually have just one fan.


This car has two fans.


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Re: 2009 Honda Civic Cooling fan running continuously [Re: Doog] #4106188 05/25/16 10:59 AM
Joined: Oct 2011
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Doog Offline OP
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My local shop has a "free AC performance check up" coupon on their website...going in tomorrow.

Re: 2009 Honda Civic Cooling fan running continuously [Re: madRiver] #4106387 05/25/16 02:22 PM
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Doog Offline OP
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Originally Posted By: madRiver
Not sure if corrected by 2009, however Honda/Acura had ac relay problems (made in USA part smile ) in my 2007 mdx and had similar symptoms. It was a $9 fix to buy a new ac relay from dealer. Same issue wife's Subaru that mechanic did not diagnose testing everything. Spent $6 on aftermarket relay fine.

Just saying a cheap try before you take it in. Don't blindly add freon.


where is the relay located?

Re: 2009 Honda Civic Cooling fan running continuously [Re: madRiver] #4106600 05/25/16 06:28 PM
Joined: Oct 2011
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Doog Offline OP
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Joined: Oct 2011
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Originally Posted By: madRiver
Not sure if corrected by 2009, however Honda/Acura had ac relay problems (made in USA part smile ) in my 2007 mdx and had similar symptoms. It was a $9 fix to buy a new ac relay from dealer. Same issue wife's Subaru that mechanic did not diagnose testing everything. Spent $6 on aftermarket relay fine.

Just saying a cheap try before you take it in. Don't blindly add freon.


UPDATE Ok so I searched the internet on YouTube and found several videos about the dreaded relay.....so I figured WTH? Got one at AAP for $5.99 and VOILA!! The compressor came on and it started blowing cool...then colder...took it for a 5 mile ride...blowing cold...Thank You VERY Much!! thumbsup thumbsup

Re: 2009 Honda Civic Cooling fan running continuously [Re: Doog] #4107191 05/26/16 11:33 AM
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2010Civic Offline
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Nice!


2010 Honda Civic LX
Valvoline SynPower 5w-20 - Napa Gold oil filter
59,992 miles
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