Hello, I've been having some a/c problems which sucks because it's been 110+ out here.

To start, the a/c compressor is cycling on and off rapidly. I connected a gauge set from Autozone to find out what the pressure is reading. The result was not good. The low side is dropping to 60 psi when the compressor cycles and the high side is above 400 psi! I'm assuming the high pressure is causing the compressor to turn off.

From what I've read, the most common cause for this problem is simply an overcharge of 134a. But, this car hasn't been recharged in a few years and the problem just started recently.

Additionally, I read a lack of airflow over the condenser can cause this problem. The fans turn on when the a/c compressor comes on and when it's engaged cold air comes from the vents so I don't think the problem is here.

IRCC, I've had other cars with expansion valve that became clogged but that would cause high pressure just on one side right?

Finally, I've read these cars are suppose to be reved up to 2500 rpms to take the psi measurements. I took them at idle, could that have an effect? Does anyone have a link for an a/c troubleshoot guide for these cars?

Thanks,

John

 

Well, I've been reading a lot on this problem. I've been focused on the condenser not getting airflow because I know the system isn't overcharged. Today I tried spraying a garden hose over the condenser and sure enough the low side dropped down to 35 psi. The high side is still hovering around 350 so I'll have to figure out if that's normal. The compressor is no longer cycling rapidly either and the air seems cold as it should be.

Now, I need to figure why the condenser is getting so hot. I noticed only the condenser fan (smaller driver side) comes on with the a/c. I thought that was normal but should they both be coming on? What else could cause the condenser to get so hot?

Thanks,

John

 

In for details. My crv was over charged. The compressor was cycling so rapidly. When i drive on highway it gets cooler the air. I would like cold air as you lol. Ill be checking this topic out

 

I'm having this same issue as well. I'm gonna see if I can fix this over the weekend as well...getting 100* hot and humid weather in MN right now....

 

both the fan should turn on....

 

hot wire the other fan and see if its working...fo from there and let us know if it works...
there should be a connector unplug it and just run it thru the battery,,
i had this problem before and it was just the fan...

does the car over heat? or does it get hot...

 

Okay, problem has been solved. I jumped the main radiator fan and nothing. Replaced said fan and now both turn on with the a/c- cycling problems are gone. So, for you guys who are having the same problem, make sure BOTH fans come on with the a/c compressor.

The amazing thing is this car didn't overheat (least not that we know of) on my sister with the radiator fan inoperable. Maybe Honda's just run cool or maybe that little condenser fan was working just hard enough to cool things down since she has her a/c on all the time. Either way, very impressive considering the car is driven in stop and go traffic here in Phoenix (did i mention it's hot?).

 

nice!

 

i will try this soon. when i finish painting the monster truck "crv" lol