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2009 Honda CR-V Air Conditioning #4758027
05/15/18 04:03 PM
05/15/18 04:03 PM
Joined: Aug 2012
Posts: 467
New York
Recalculating Offline OP
Recalculating  Offline OP
Joined: Aug 2012
Posts: 467
New York
2009 Honda CR-V - 54000 miles

Air conditioning gauges are showing 72 psi on both the low side and high side with no change when vehicle is started and air conditioning put on. A 1000 rpm is noticed when the A/C is turned on. The A/C 4 pin relay in the main fuse panel is tested good by swapping out nearby relays along with the 7.5 fuse for the magnetic coil.
I have measured the air gap at the A/C clutch to be 20 and is believed to be correct. With the engine running, A/C on, I have tapped on the A/C clutch to see if it was a weak coil and it will not turn on. At this point I have assessed a bad A/C clutch and/or coil.

In 2012, I received a letter from Honda citing this problem and extending the warranty of the A/C clutch and coil for 7 years or 100,000 miles. I believe it is no longer valid. (2009)

I have the vacuum pump and the gauges. It appears there is no room for the clutch and coil to come off without pulling the compressor out from the bottom.

Questions are: (1) Am I reading this right from the tests conducted? (2) And since this will be a full compressor replacement, what have the experienced members purchased as a quality reliable replacement? (Brand name)


2009 Honda CR-V EX-L 55k
2007 Buick Lacrosse 52k
Re: 2009 Honda CR-V Air Conditioning [Re: Recalculating] #4758036
05/15/18 04:15 PM
05/15/18 04:15 PM
Joined: Dec 2006
Posts: 7,770
Toronto, Canada
KrisZ Offline
KrisZ  Offline
Joined: Dec 2006
Posts: 7,770
Toronto, Canada
Did you check if the coil is receiving signal to activate?


2015 Dodge Grand Caravan-27k miles.
2006 Mazda 3-163k miles
Re: 2009 Honda CR-V Air Conditioning [Re: Recalculating] #4758041
05/15/18 04:30 PM
05/15/18 04:30 PM
Joined: Jun 2003
Posts: 17,481
Deplorable in apple valley, ca
Chris142 Online content
Chris142  Online Content
Joined: Jun 2003
Posts: 17,481
Deplorable in apple valley, ca
The OE coils are a known problem. Believe it or not The Chinese copy is mush better.


02 Wrangler durablend 10w40
87 F250 traveler 15w40
04 Tahoe super-s 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40
Re: 2009 Honda CR-V Air Conditioning [Re: Recalculating] #4758045
05/15/18 04:36 PM
05/15/18 04:36 PM
Joined: Aug 2012
Posts: 467
New York
Recalculating Offline OP
Recalculating  Offline OP
Joined: Aug 2012
Posts: 467
New York
I am not familiar how to test for that other than the harness plug-in that is on top of the compressor which lies under the alternator. From under the vehicle, with the plastic in the right wheel well as the plastic under the radiator housing removed, access is still very limited to the harness connection. Without pulling the power steering reservoir and some other supports, there is no other way I know how to probe that feed.

Since it appears by the rpm drop that the PCM is sending signal to the coil and the 7.5 and relay is good, the probability in a bad wire connection without a blown fuse is?

Is there is different layman's method?


2009 Honda CR-V EX-L 55k
2007 Buick Lacrosse 52k
Re: 2009 Honda CR-V Air Conditioning [Re: KrisZ] #4758050
05/15/18 04:44 PM
05/15/18 04:44 PM
Joined: Aug 2009
Posts: 3,907
Pittsburgh,PA U.S.A.
JimPghPA Offline
JimPghPA  Offline
Joined: Aug 2009
Posts: 3,907
Pittsburgh,PA U.S.A.
Originally Posted By: KrisZ
Did you check if the coil is receiving signal to activate?


+1

72 PSI might be too low of a pressure to activate a pressure switch.

Last edited by JimPghPA; 05/15/18 04:47 PM.

Boy will I be happy when ALL vehicles on public roads are autonomous.


JimPghPa

Re: 2009 Honda CR-V Air Conditioning [Re: Recalculating] #4758052
05/15/18 04:48 PM
05/15/18 04:48 PM
Joined: Apr 2009
Posts: 395
Southern VA
klt1986 Offline
klt1986  Offline
Joined: Apr 2009
Posts: 395
Southern VA
Curious to see some brands of compressors to use or ones to avoid as I'm getting ready to change the compressor in my 08 CR-V. I replaced the relay about a month ago but there are still times the clutch will not engage. Yesterday it stopped working while my wife was driving home on a 95 degree afternoon. However, after it sat in the shade for a couple hours it worked fine.

I thought about changing the clutch but the car is 10 years old and has 145k on it.

Looks like Rock Auto has a Denso for a little under $300. When changing the compressor, what other components should be changed?


Last edited by klt1986; 05/15/18 04:53 PM.

Wife: 08 Honda CR-V 4WD, M1 5W-20
Me: 11 Toyota Tundra DC 4WD 5.7L, PP 5W-30
Me Work: 06 Ford Explorer 4WD 4.0L, Pennzoil 5W-30
Son: 14 Toyota Corolla S, M1 AFE 0W-20
Re: 2009 Honda CR-V Air Conditioning [Re: Recalculating] #4758056
05/15/18 04:58 PM
05/15/18 04:58 PM
Joined: Dec 2006
Posts: 7,770
Toronto, Canada
KrisZ Offline
KrisZ  Offline
Joined: Dec 2006
Posts: 7,770
Toronto, Canada
Originally Posted By: Recalculating
I am not familiar how to test for that other than the harness plug-in that is on top of the compressor which lies under the alternator. From under the vehicle, with the plastic in the right wheel well as the plastic under the radiator housing removed, access is still very limited to the harness connection. Without pulling the power steering reservoir and some other supports, there is no other way I know how to probe that feed.

Since it appears by the rpm drop that the PCM is sending signal to the coil and the 7.5 and relay is good, the probability in a bad wire connection without a blown fuse is?

Is there is different layman's method?


Since access is limited check if you are getting 12V at the fuse.


2015 Dodge Grand Caravan-27k miles.
2006 Mazda 3-163k miles
Re: 2009 Honda CR-V Air Conditioning [Re: Recalculating] #4758063
05/15/18 05:03 PM
05/15/18 05:03 PM
Joined: Aug 2012
Posts: 467
New York
Recalculating Offline OP
Recalculating  Offline OP
Joined: Aug 2012
Posts: 467
New York
Since I still have static pressure with no internal compressor issues, I was just going to buy a new compressor and do the swap. After getting the new one up and running with all specs noted, I would take the original clutch and coil off and replace then store properly in case the new purchase goes belly up.

So Jim is thinking 72 psi in 70F is too low in the low side to activate the switch?


2009 Honda CR-V EX-L 55k
2007 Buick Lacrosse 52k
Re: 2009 Honda CR-V Air Conditioning [Re: JimPghPA] #4758064
05/15/18 05:03 PM
05/15/18 05:03 PM
Joined: Jun 2003
Posts: 17,481
Deplorable in apple valley, ca
Chris142 Online content
Chris142  Online Content
Joined: Jun 2003
Posts: 17,481
Deplorable in apple valley, ca
Originally Posted By: JimPghPA
Originally Posted By: KrisZ
Did you check if the coil is receiving signal to activate?


+1

72 PSI might be too low of a pressure to activate a pressure switch.
no. More like 20 psi.


02 Wrangler durablend 10w40
87 F250 traveler 15w40
04 Tahoe super-s 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40
Re: 2009 Honda CR-V Air Conditioning [Re: Recalculating] #4758066
05/15/18 05:05 PM
05/15/18 05:05 PM
Joined: Sep 2007
Posts: 989
TX, USA
JMJNet Offline
JMJNet  Offline
Joined: Sep 2007
Posts: 989
TX, USA
I am not sure what Honda uses, for Toyota, I used Denso Compressor.
It is about the same price as aftermarket.

The good aftermarket is Sanden original, a lot of CKO Sanden.


  • 2017 Toyota Sienna
  • 1995 GMC Suburban 6.5L Turbo Diesel


Re: 2009 Honda CR-V Air Conditioning [Re: KrisZ] #4758067
05/15/18 05:05 PM
05/15/18 05:05 PM
Joined: Aug 2012
Posts: 467
New York
Recalculating Offline OP
Recalculating  Offline OP
Joined: Aug 2012
Posts: 467
New York
Originally Posted By: KrisZ


Since access is limited check if you are getting 12V at the fuse.


I am getting 12v @ the fuse.


2009 Honda CR-V EX-L 55k
2007 Buick Lacrosse 52k
Re: 2009 Honda CR-V Air Conditioning [Re: Recalculating] #4758068
05/15/18 05:06 PM
05/15/18 05:06 PM
Joined: Jun 2003
Posts: 17,481
Deplorable in apple valley, ca
Chris142 Online content
Chris142  Online Content
Joined: Jun 2003
Posts: 17,481
Deplorable in apple valley, ca
If you can see the clutch wire straighten out a coat hanger,grind a sharp point on one end and use that to pierce the wire. Then test for 12v at the wire with a voltmeter.


02 Wrangler durablend 10w40
87 F250 traveler 15w40
04 Tahoe super-s 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40
Re: 2009 Honda CR-V Air Conditioning [Re: klt1986] #4758089
05/15/18 05:38 PM
05/15/18 05:38 PM
Joined: Aug 2012
Posts: 467
New York
Recalculating Offline OP
Recalculating  Offline OP
Joined: Aug 2012
Posts: 467
New York
Originally Posted By: klt1986
Curious to see some brands of compressors to use or ones to avoid as I'm getting ready to change the compressor in my 08 CR-V. I replaced the relay about a month ago but there are still times the clutch will not engage. Yesterday it stopped working while my wife was driving home on a 95 degree afternoon. However, after it sat in the shade for a couple hours it worked fine.

I thought about changing the clutch but the car is 10 years old and has 145k on it.

Looks like Rock Auto has a Denso for a little under $300. When changing the compressor, what other components should be changed?



You might want to put some gauges on it to see what the pressures are. You maybe low on R134a.


2009 Honda CR-V EX-L 55k
2007 Buick Lacrosse 52k
Re: 2009 Honda CR-V Air Conditioning [Re: Recalculating] #4758105
05/15/18 06:02 PM
05/15/18 06:02 PM
Joined: Dec 2006
Posts: 7,770
Toronto, Canada
KrisZ Offline
KrisZ  Offline
Joined: Dec 2006
Posts: 7,770
Toronto, Canada
Personally compressor replacement would be the last resort, especially since the problem most likely lies with the clutch and coil, not compressor internals. Opening the system up is always risky. It all sounds good on paper, but the reality is different.

Plus I don't think Honda AC compressors have a pressed in clutch and coil, it's just held by a bolt. Removal should be quite easy.


2015 Dodge Grand Caravan-27k miles.
2006 Mazda 3-163k miles
Re: 2009 Honda CR-V Air Conditioning [Re: Recalculating] #4758108
05/15/18 06:04 PM
05/15/18 06:04 PM
Joined: Aug 2017
Posts: 235
WY
sloinker Online content
sloinker  Online Content
Joined: Aug 2017
Posts: 235
WY
Double make sure that you are getting the voltage at the compressor. If you are then you should buy a new accumulator/dryer along with the new compressor. A shop will have to vacuum out the old refrigerant and will credit it to your account. A vacuum will need to be applied to the repaired system until any moisture is boiled out before recharging. GoodLuck!

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