Have 97 honda accord. When A/C would not cool we added 2 cans of 134a until proper pressure was reached. A/C started to blow cold and after several minutes the compressor started to cycle on and off every 5-10 seconds and continued to do this until we shut it down. How can I check to see if the clutch is bad or if the pressure switch is faulty? I need to tell you that there is no canister in the low pressure line clear back and into the fire wall. Would the pressure switch be inside the car up under the dash on the passenger side where the low pressure line goes through the firewall? Also, is it possible to run a wire from the battery directly to the electrical line that goes into the compressor to check whether the clutch is bad or not?
Thanks for any helping hints.
Don

 

Let's move this post to the correct forum...and see if we can get you a correct answer..
Please post in a correct forum for answers..

 

You may have a large refrigerant leak. As charge leaks out, the cycle time will get shorter and shorter. Pressure switch disables compressor when pressure get's too low.

If clutch is cycling on/off, there is no reason to suspect a faulty clutch coil. It's doing what is commanded by ECU and pressure switch control.

However, all above is speculation. Since you have not taken any system pressures, there is no way to be sure.

Suggest having system inspected for leaks and check system pressures to see what's up.

The Accord system uses a receiver/drier to buffer charge and provide a dessicant, however it's on high pressure side, not low pressure as a fixed orifice system.

You can not simply add 2 cans of refrigerant to "top up charge". As charge is lost, so is lubricant. W/o lubricant, the compressor will fail.

good luck