The cycle switch not engaging the Compressors clutch
The most likely reason the compressor is not coming on is because you are low on freon. The low pressure switch will keep the compressor from cycling on because damage to your compressor would result. You can jumper across the low presure switch with the engine running and A/C turned on, ( for short time only) this will provide you with question is my compressor clutch good, or am I just low on freon. The AC compressor relay switch may need to be replaced
Either low on freon or the low pressure switch is bad. You are gonna have to put a set of gauges on it. Usually this happens when the freon leaks out of the system. If there is not enough freon in the system, the low pressure switch keeps the compressor from coming on and being burned up.
What kind of car and which switch. There are several that can effect compressor operation.
Try checking the low pressure switch.
there are several causes to the air pump. the first and most obvious is the air pump (compressor) itself. if you do not hear the compressor pumping air or if you do not feel the slight vibration of the compressor when you put your car into drive, then it's probably the compressor that has gone bad. if the compressor is coming on and you do not hear any air leaking, then your problem could be the height adjuster, located on the suspension bags themselves. Bronconvict: another possibility includes the compressor relay switch. This switch controlls the power to the air bag suspension compressor. This switch is known for burning out when the suspension compressor is working too hard. This can also be caused by a bad/corroded GEM module (due to notorious winshield leak). i had to replace "height sensor" on driver side . part was $200.
Check for a blown fuse in fuse block and also at the top of the compressor Bad switch Bad compressor clutch
The clutch receives it's signal to engage from a pressure switch in the system. If there is insufficient refrigerant in the system the pressure switch will not close resulting in no power at the compressor clutch to make it engage.
The 1992 Chevrolet Suburban air conditioner compressor relay switch can be found in the fuse box. The air conditioning compressor relay switch will be labeled as such.
I don't think there is a switch inside the cabin for opening bonnet, the lever for manually opening it,is on the left hand side of the passenger footwell
where is the reset switch for air compressor for Lincoln navigator 2003 on the left side all way to the back is a small compartment, right there you can find the fuel reset switch and the air compressor reset switch
The low pressure cycling switch is on the low pressure line coming from the compressor. Most of the time, it will be located on the reciever/dryer. It will have two wires coming from it. The low pressure line is the bigger line of the two.
Most likely cause is a faulty under bonnet pin switch
when unplug ed and plug ed the power switch relay will make click if supply is in working condition to circuit. so compressor if not working the means no sound then definately it is in problem.
Is the selenoid getting power when the switch is turned to the start position? If yes, it's not a switch problem. Is power coming THROUGH the switch and to the starter when the key is turned to start? If not, it's a selenoid problem. If yes, it's a starter problem.
You first need to find out if your ac compressor is coming on. It should make a click sound then you can see the armature or compressor clutch pulley spinning. If it is not coming on then check ac relay, cycling switch, ac control head, wiring, and any associated fuses. All of these things can stop the compressor from starting
Find out the reason the compressor isn't engaging, of course! It could be a problem with the clutch, a problem with the low pressure switch, a low refrigerant level (likely caused by a leak in the system which needs to be repaired), or the compressor itself could be defective. Without any sort of diagnosis, we have no way of narrowing down the causes. You won't get cold air without the compressor, so that has to be dealt with.
the load of the AC compressor slows the engine
Lincoln Navigator suspension compressor relay switch is located on the firewall. The switch will be on the passenger side of the firewall.
Why is gasoline coming out of the ignition switch?
Yes, UNLESS the belt pulley is frozen and doesn't revolve (i.e.: freewheel) easily. If the compressor simply does not work properly, or is out of Freon the activation switch will not turn it on.
It is a device that cycles the compressor depending on the line pressure coming out of the evaporator. Some vehicles have the switch located over on the high "condenser" side of the system.
Jumped directly from the relay? Bad compressor clutch, bad relay, low or excess refrigerant.
On the passenger side, to the left of the glove box