Removal and replacement of the air conditioning compressor

1995-98 Models

1. Disconnect the negative battery terminal.
2. Remove the splash guard on the right side of the vehicle.
3. Loosen the alternator belt idler pulley.
4. Slip the drive belt off the alternator pulley.
5. Remove the four air conditioning compressor mounting bolts.
6. Remove the radiator fan and fan shroud.
7. Move the air conditioning compressor forward.
8. Disconnect the alternator harness connector.
9. Remove the alternator mounting bolts, and lower the alternator from the vehicle.

To install:

1. Hold the alternator in place and install the mounting bolts.
2. Plug in the alternator harness connector.
3. Move the air conditioning compressor back into location.
4. Install the radiator cooling fan and shroud.
5. Install the air conditioning compressor mounting bolts.
6. Place the drive belt on the alternator pulley.
7. Tighten the drive belt to the proper tension with the idler pulley.
8. Install the splash guard.
9. Connect the negative battery terminal.

Proper belt tension is important. A belt that is too tight may cause alternator bearing failure; one that is too loose will cause a gradual battery discharge and/or belt slippage, resulting in belt breakage from overheating.

• Located front of engine, close to crank pulley
• press the helpful button and follow me on Fixya for more tips
• Insert the square tip of a 1/2-inch socket wrench into the square hole in the center of the serpentine belt's adjustment pulley. The adjustment pulley is the smallest pulley the belt wraps around.
• Pull the adjustment pulley toward the engine with the socket wrench to release the tension on the serpentine belt, then pull the belt off the air conditioning compressor's pulley.
• Remove the bolts which secure the air conditioning compressor to its mounting brackets with an open-end wrench, then position the compressor to the side of the engine compartment. Do not disturb the hoses that attach to the compressor.
• Pull the electrical connection off the crankshaft sensor.
• Remove the two bolts that secure the crankshaft sensor against the engine with an open-end wrench, then slide the sensor out of the engine.
• Slide the new crankshaft sensor into the engine, then install and tighten the sensor's two securing bolts with an open-end wrench.
• Press the electrical connection onto the crankshaft sensor.
• Position the air conditioning compressor against its mounting brackets, then install and tighten the compressor's bolts with an open-end wrench.
• Pull the serpentine belt's adjustment pulley toward the engine with the socket wrench, then position the belt onto the air compressor's pulley. write up found @ehow

How to Replace the Crankshaft Sensor in Ford 150 eHow

Could have a faulty low pressure switch.
The low pressure switch is located on the air conditioning line in the right rear of the engine compartment near the firewall.

The low-pressure switch in your air conditioning system is used to interrupt power to the compressor when the low side pressure drops below 25 psi. This prevents freeze-up of the system and possible damage to the compressor. When the switch is faulty, the symptoms of freeze-up, or no compressor function, will be present. Replacement is straightforward, but requires the removal of refrigerant from the system.

First check that all electrical connections to/from your air conditioning components are tight and secure with no broken or chaffed wires and connectors, or oil swollen connection points. Then check that all fuses and relays involved in the operation of your air conditioning system are operational. If all is good, then remove the belt around the air conditioner compressor pulley. Get a wrench and try to turn the front of the compressor pulley. It should turn with little to no resistance. If it wont move or is very hard to turn, it is probably locked up and needs repair or replacement. If it moves, then the compressor part is OK, but your clutch would likely need replacement. Some model cars its cheaper to just replace the whole compressor than to rebuild the clutch. Jaguar sounds expensive - I would seek out a junk yard. Good luck.

before I do a job like this i always buy a haynes repair manual for my year and car. take the time to read up on this and then well knowledged i go for it.
Good luck and thanks for your question and I hope my suggestions help. Don't forget to rate me.
burdfrenzy
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1998 Volvo S70 AUTOMOBILES
Includes starter and alternator replacement procedures for domestic and imported 1998 Volvo S70 cars and light trucks from 1990+.

Alternator, Replace -> With Air Conditioning -> Without Air Conditioning
Vehicle: 1998 Volvo S70 2.3 L5 GAS

With Air Conditioning

• Disconnect battery ground cable at battery.
• Detach pipe from control module box.
• Remove auxiliaries belt.
• Remove power steering pump and place it on top of engine.
• Remove upper bolt.
• Remove bolts common to alternator and compressor; lower bolts on alternator and upper bolts on compressor.
• Raise and support vehicle.
• Loosen lower bolts for compressor (so that there is some clearance).
• Remove air baffle.
• Lower vehicle.
• Disconnect warning lamp positive lead and connector from alternator.
• Pull alternator upwards/away.
• Remove alternator from vehicle.
• Reverse proc...

It sounds like your air conditioning compressor or air conditioning clutches have gone bad the solution is to have rebuilt (or buy a rebuilt)air conditioning compressor. Do not attempt to work on thr compressor yourself unless you are certified in air conditioning, gas in system can kill you if you breeth it in.

The compressor is service as one unit. remove the belt and shack the pully if it wobles the compressor bearing is toast.

Check the crank sensor that is stuck in the block right by the A/C compressor. You had to unplug it to replace the compressor.

When you say "noisy", is it a metallic grinding noise? Or, did someone overcharge the system. If the compressor IS internally noisy, replacing it is only half of the job. Anytime that comperssors fail, metallic particles get in the system, from the grinding of the compressor vanes or bearings...and need to be removed. Most of the time, they are trapped in a device called the "receiver-dryer", located next to the condenser in the front of the car. So, replace the compressor, replace the receiver-dryer, and evacuate the system. Hold a vacuum for 30 minutes, and then recharge. Not replacing the receiver dryer will damage the new compressor.

replace compressor ;remove refrigerant ;accessory belt ;electrical connectors ;suction /discharge refrigerant hose from back of compressor ;bolts from compressor and engine block ;leave bracket attached to compressor