Hey all.

I'm new here. I think my 2008 accord is just low on freon but the clutch isn't engaging so I can't check the pressures or recharge the system. My plan is to take out the relay and manually power it from there but wasn't sure which connector on the fuse box is the positive one. Can anyone who has done this help me out? Thanks in advance!

 

You can supply direct 12v to the single wire terminal on the compressor. Start by doing this with the car off and listen to it. It should click. Remover the single small wire and apply the voltage to the terminal on the compressor. If it does not click then it is likely that the field coil has failed. Honda extended the warranty for field coils on some vehicles to 100k. If you have less then that on it I highly recommend you call a dealer and find out if your car has the warranty extension.

 

So I powered the compressor directly at the connector and it clicks when the car is off. I turned the car on and powered it directly again and was able to have the clutch engage. I read the pressures and it was low so I added freon to the correct range. The clutch when manually powered was blowing super cold air. I turned the car off and reconnected the connector. And again no clutch engaging. So I replaced the relay this time.

Now the clutch does engage but is cycling on and off. More of the off than on. So any thoughts? Im thinking the pressure in the system is either too high or too low maybe? thanks again!

 

It does sound like the pressure may be the culprit. Remember that ambient air temperature and humidity are the controllers for what the high and low cycles should be. Best of luck.

 

If the pressures are correct (in relation to the outside temperature), then maybe its good now.

The system is SUPPOSED to cycle on & off. When it is very hot & humid, the percentage-ON is larger. The cycling is controlled by the temperature of the evaporator core.

 

What is low side pressure running?

 

It has to be more specific then that. What does the low pressure cycle at and what is the ambient air temperature and approximate relative humidity which can be guessed off a weather site for the area that one is located.