Have a Honda Question? Ask a Honda Repair Expert.
Hi. few questions.
This is a 4cylinder accord?
when you turn the a/c on do you notice if the radiator fans come on or are they staying off?
Ok well when the a/c is turned on the fnas should run unless there is something wrong with the A/C panel or the pressure switch.
Which relay or where is the relay you checked and how did you check it?
All a/c systems have a pressure switch. Its actually on top of the reciever/dryer on that car. Thats the cylindrical aluminum thing just under the battery tray.
The ground comes through the a/c switch on the dash. than goes through the thermostat in the evaporator housing and through the pressure switch. If either of these 3 things are bad they wont tell the PCM to turn the a/c on and the PCM wont turn the clutch or fans on.
The first thing i would do is unplug the pressure switch. It has 2 wires a blue/red and a blue/yellow. Turn the car on. turn the a/c on and check for ground at the blue/yellow.
You might have 2 problems now. First is either the system is under charged and thats why the fans never came on Or 2 the pressure switch is bad.
As for the clutch you are going to have to see if your getting power on the red wire coming out of the clutch relay on the drivers side attached to the fan shroud. If you do than your going to have to trace it down to the compressor. Alot of times the wires break where they go from teh fan to the compressor. Usually due to the engine torquing and the constant stress of that wire. If you have power on the wire thats on the compressor itself than i would say you have a bad compressor as well or a faulty clutch/coil.
Ok so check the red coming out of that relay and see if there is power. The fact that you jumped the compressor tells me that your not getting power form the relay. Either thet relay is bad. the wiring to it or the wire is broke from the relay to the compressor.
If the engine almost choked that sounds like its over charged. How are you checking the system?
Just a little help here. The a/c relay has 4 wires. A black/yellow a white a red and a red/blue.
With the switch jumped with a paper clip you should have ground at the red/blue and power at the other 3 wires. (with the relay plugged in. )