Actually no technical skills needed to check the Freon level. Home central air conditioners have a Freon scale on it. One just need to read the scale and determine whether the level of Freon is sufficient.
Check freon level first
Check the following.............. 1. Freon level. 2. Bad accumulator and expansion tube.
Check the following first.......... 1. Freon level in system. 2. A/C low side pressure switch.
Check all of the following................. 1. Freon level in system. 2. Pressure switches and relays. 3. Controller head. 4. Power and ground going to the compressor clutch.
Check the following............... 1. Freon system level. 2. Pressure switch. 3. Clutch wire harness. 4. If above are okay then scan the vehicles computer.
Check all of the following................. 1. Freon level in system. 2. Pressure switches and relays. 3. Controller head. 4. Power and ground going to the compressor clutch.
To fix the ac system on the 1988 240 Volvo, check the freon level first. Check the fuse, the relay, then the compressor clutch to find the defective part.
1. You will need to check the freon level in the system.... 2. If the levels are correct then check the a/c pressure switches... 3. Check the wire harness on the a/c compressor clutch coil. 4. Its a lot easier to just scan the vehicles computer to pinpoint the problem...
Check the following........... 1. Freon level in the system. 2. Power and ground going to the a/c clutch. 3. Clutch front hub air gap. 4. Pressure switches. 5. If the freon level is fine on both the low and high sides it will be a lot easier to just scan the vehicles computer and see what is going on.....
Check to see if it have a sight glass on the accumulator/drier some do.
Check the following............ 1. Freon level in the system. 2. Electrical connections. 3. Fuses...
With AC pressure gauges and manifold assembly. This is best done by a professional.