SRX Engine Cooling Fan

if they didn't read the fault codes before starting work, they are repairing by replacement and that is not good
if a sensor is faulty and it could be a cam shaft sensor as well as a crankshaft sensor , normally it misfires or stops altogether
the ECM is in limp mode and that reduced the engine power and if there was a sensor problem it would not just reduce power and put the light on but would show up in a define manner
engine lights also come on it there is a transmission problem and that will also initiate the limp mode
have the fault codes read to determine the faulty part/ sensor

No the cooling fan should run continuously.

The question is: How remove clutch in order to remove fan mounted on its engine-side face.

• Generally, the clutch drive half shaft must be uncoupled from coolant pump (impeller drive) half shaft using special wrench kit available as loaner from AutoZone (free with $79 approx deposit).
• Best done after shroud & radiator remove after coolant drained.

1. Uncouple coolant pump and fan clutch drive shaft(s) as follows:
   
   1. span across combo-pulley-sheaves-unit mounting bolt heads with large tool kit wrench, and
   2. span inline clutch coupling nut with small tool kit wrench. Then,
   3. turn small wrench (and coupling nut) CW while resisting with large wrench (CCW) to turn coupling nut until disengaged from coolant pump drive shaft.
2. Remove fan/clutch assembly.
3. Note direction of mounted fan hub and fan blades orientation to ensure proper re-assembly.
4. On rear of clutch assy, remove 4 bolts to disengage and remove fan.
5. Assemble new fan to clutch (or, preferably, new clutch and new fan) using new bolts and washers provided with fan.
6. Couple fan-clutch assy to coolant pump drive shaft as per opposite of uncoupling step 1, above. (Turn inline nut CCW to tighten...30 ft-lb.
7. Check that fan can be hand turned...CW.)
8. Rest shroud over and onto fan.
9. Replace radiator; remount shroud; reclamp hoses, and refill and air purge cooling system.

Hi,
66 L6 200. Are the timing marks easy to see? I just did this last week on our 66 block. Just bring it to TDC on #1. Remove the pulley/dampner and the timing cover bolts. Remember to remove the front oil pan bolts to the timing cover.
I use an impact wrench on the cam bolt while holding the crank bolt so I don't slip out of TDC. You'll then have to remove the oil slinger. It just slips off the keyway on the crank snout. Carefully pry the cam sprocket to start wiggling it off the cam. Both the cam and crank sprockets are "keyed".
Get the new sprockets and chain aligned with their marks. Slip the crank sprocket on first until the cam sprocket needs mounted. Just remember to hold the crank, cam sprocket, and chain as an assembly when mounting. Once you get the cam sprocket started, start threading the bolt to hold it in place. Tap light a rubber mallet to seat it further on the end of cam.
I would then remove the cam bolt and coat it lightly with thread-loc and then thread it back in. You don't want it backing out later when your driving down the road. ( don't ask how I know). Remember to put the oil slinger back on.
Your Engine has an oil slinger.
Wayne

Congrats, I have one 1993 GC Limited and its a nice SUV...

5.2L Engines

1. Disconnect the negative battery cable.
2. The viscous fan drive and blade assembly is threaded into the water pump hub shaft. Remove the fan drive and blade assembly from the water pump by turning the mounting nut counterclockwise as viewed from the front while securing the water pump pulley. Do not remove or unbolt the fan drive and blade at this time.

Fig. : Fan blade and viscous drive (click for zoom)


The threads on the viscous fan drive are right hand threaded.

1. Remove the 2 fan shroud-to-upper crossmember nuts.
2. Remove the fan drive, blade and shroud as an assembly.

WARNING Do not place the viscous fan drive in a horizontal position. If stored horizontally, silicone fluid in the viscous fan drive could drain into its bearing assembly and the assembly would have to be replaced.
CAUTION Do not remove the water pump pulley-to-water pump bolts. The pulley is under spring tension.

1. Remove the 4 bolts securing the fan blade assembly to the viscous fan drive.
   

To install:

1. Install the fan blade on the viscous drive. Install the bolts and tighten them to 17 ft. lbs. (23 Nm).
2. Position the fan shroud, viscous fan and blade into the engine compartment as an assembly.
3. Position the fan shroud to the radiator. Insert the lower slots of the shroud into the crossmember. Install the upper attaching nuts.

Ensure the upper and lower portions of the fan shroud are firmly connected. All air must flow through the radiator.

1. Install the fan drive and blade assembly to the water pump shaft and tighten the nut.
   

Ensure there is at least 1 inch (25mm) between the tips of the fan blades and shroud.

1. Connect the negative battery cable.

Also, its possible that you are interesting in check the Service Manual ZJ-Secc-7-Cooling-System

Hope helps with this (remember comment and rated this).

Electric Engine Fan - Fan Switch

Removal & Installation
2.7L Engine

1. Disconnect negative battery cable.
2. Partially drain cooling system.
3. Disconnect the electrical connector .
4. Remove engine coolant sensor from coolant outlet tube .
   

To install:

1. Apply thread sealant to sensor threads.
2. Install engine coolant temperature sensor into coolant outlet tube.
3. Tighten sensor to 20 ft. lbs.(28 Nm) torque.
4. Connect electrical connector to engine coolant temperature sensor .
   

3.2L And 3.5L Engines

1. Disconnect negative battery cable.
2. Partially drain cooling system.
3. With the engine cold, disconnect coolant sensor electrical connector.
4. Remove sensor.
   

To install:

1. Install engine coolant temperature sensor.
2. Tighten sensor to 20 ft. lbs.(28 Nm) torque.
3. Attach electrical connector to sensor.
4. Connect negative battery cable.

Removal & Installation

1. Disconnect negative battery cable.
2. Partially drain cooling system.
3. Remove upper radiator hose.
4. Disconnect cooling fan electrical connector.
5. Remove cooling fan mounting bolts.
6. Remove radiator cooling fan assembly from vehicle.
   
   
   Fig. Removal and installation of the radiator fan-2.7L Engine shown
   

To install:

1. Position radiator cooling fan assembly in vehicle.
2. Install cooling fan mounting bolts. Tighten to 50 inch lbs. (6 Nm)
3. Connect cooling fan electrical connector.
4. Install upper radiator hose .
5. Fill cooling system.
6. Operate engine until it reaches normal operating temperature.
7. Check cooling system and automatic transmission for correct fluid levels.

Hope helps (remember comment and rated this).

This is what I found on the 98 Regency instructions: Crankshaft Damper REMOVAL & INSTALLATION

1. Disconnect the negative battery cable.
2. Remove the belts from the crankshaft pulley.
3. Remove the crankshaft damper attaching bolt.
4. Attach a suitable puller to the damper and remove the damper from the crankshaft. NOTE: On certain models, removal of the cooling fan, fan shroud or radiator may be necessary for clearance. WARNING
   DO NOT pry on the damper assembly to remove it from the vehicle or component damage will result. Remove the damper using a puller only.
   
5. Installation is the reverse of removal. Torque the damper bolt to specification. Fig. 1: One example of a crankshaft damper puller tool
   Fig. 2: Removing the crankshaft damper bolt Fig. 3: Do not attempt to pry on the damper to remove it from the crankshaft, use a puller only Fig. 4: Removing the damper from the crankshaft Fig. 5: When installing the damper, thread the bolt by hand first to prevent cross-threading

Fig. 1: The blower motor and fan assembly is mounted in the heater and A/C module, and is accessible from the engine compartment

GM Bonneville/Eighty Eight/LeSabre 1986-1999
Blower Motor - REMOVAL & INSTALLATION
(see Figures 1 and 2)

1. Disconnect the negative battery cable.
2. If necessary, tag and disconnect the number 2, 4 and 6 spark plug wires from the ignition coil and move the coil out of the way.
3. For 1993-99 vehicles, remove the nuts and cross brace bar.
4. Detach the electrical connections from the blower motor.
5. Disconnect the cooling tube from the blower motor.
6. Unfasten the screws securing the blower motor to the blower module assembly.
7. Remove the blower motor and fan assembly from the module.
8. If necessary, unfasten the nut attaching the fan to the blower motor shaft, then pull the fan from the blower motor.

Fig. 2: You can disassemble the fan from the motor by removing the retaining nut


To install:

1. If the fan was removed from the motor, position the fan on the shaft, then install the retaining nut. Tighten the nut to 12 inch lbs. (1.4 Nm).
2. Position the blower motor and fan assembly to the module, then install the retaining screws. Tighten to 5 inch lbs. (0.6 Nm).
3. Connect the cooling tube to the blower motor.
4. Attach the electrical connector to the blower motor.
5. On 1993-98 vehicles, install the cross brace bar and retaining nuts. Tighten the nuts to 18 ft. lbs. (25 Nm).
6. If removed, install the coil and connect the spark plug wires, as tagged during removal.
7. Connect the negative battery cable.

Hope this helped (remember rated and comment this).

WATER PUMP
The water pump is bolted directly to the engine timing chain case/cover.

A gasket is used as a seal between the water pump and timing chain case/cover.

If water pump is replaced because of bearing/shaft damage, or leaking shaft seal, the mechanical cooling fan assembly should also be inspected. Inspect for fatigue cracks, loose blades, or loose rivets that could have resulted from excessive vibration. Replace fan if any of these conditions are found. Also check condition of the thermal viscous fan drive. Refer to Viscous Fan Drive in this group.

The water pump can be removed without discharging the air conditioning system (if equipped)

REMOVAL
Disconnect negative battery cable from battery.
Drain cooling system. Refer to Draining Cooling System in this group.
Do not waste reusable coolant. If solution is clean, drain coolant into a clean container for reuse.

The thermal viscous fan drive is attached (threaded) to the water pump hub shaft. Remove fan/viscous fan drive assembly from water pump by turning mounting nut counterclockwise as viewed from front. Threads on viscous fan drive are RIGHT HAND. Using special tool spanner wrench 6958 with adapter pins 8346 and a suitable fan wrench loosen the fan drive Viscous Fan and Fan Drive Do not attempt to remove fan/viscous fan drive assembly from vehicle at this time.
WARNING: CONSTANT TENSION HOSE CLAMPS ARE USED ON MOST COOLING SYSTEM HOSES. WHEN REMOVING OR INSTALLING, USE ONLY TOOLS DESIGNED FOR SERVICING THIS TYPE OF CLAMP, SUCH AS SPECIAL CLAMP TOOL (NUMBER 6094) SNAP-ON CLAMP TOOL (NUMBER HPC-20) MAY BE USED FOR LARGER CLAMPS. ALWAYS WEAR SAFETY GLASSES WHEN SERVICING CONSTANT TENSION CLAMPS.

CAUTION: A number or letter is stamped into the tongue of constant tension clamps. If replacement is necessary, use only an original equipment clamp with matching number or letter.

If water pump is being replaced, do not unbolt fan blade assembly from thermal viscous fan drive.
Remove two fan shroud-to-radiator nuts Fan Shroud Mounting Hardware Do not attempt to remove fan shroud at this time.
Remove fan shroud and fan blade/viscous fan drive assembly from vehicle as a complete unit.
After removing fan blade/viscous fan drive assembly, do not place thermal viscous fan drive in horizontal position. If stored horizontally, silicone fluid in viscous fan drive could drain into its bearing assembly and contaminate lubricant.
Remove accessory drive belt as follows: The drive belt is equipped with a spring loaded automatic belt tensioner. Relax tension from belt by rotating tensioner clockwise (as viewed from front) Automatic Belt Tensioner - When all belt tension has been relaxed, remove accessory drive belt.
Remove lower radiator hose clamp and remove lower hose at water pump.
Remove seven water pump mounting bolts and one stud bolt
CAUTION: Do not pry water pump at timing chain case/cover. The machined surfaces may be damaged resulting in leaks.

Remove water pump and gasket. Discard gasket.
INSTALLATION
Clean gasket mating surfaces.
Using a new gasket, position water pump and install mounting bolts as shown. Water Pump Installation - Tighten water pump mounting bolts to 54 N·m (40 ft. lbs.) torque.
Spin water pump to be sure that pump impeller does not rub against timing chain case/cover.
Connect radiator lower hose to water pump.
Relax tension from belt tensioner Automatic Belt Tensioner - Install drive belt
CAUTION: When installing the serpentine accessory drive belt, belt must be routed correctly. If not, engine may overheat due to water pump rotating in wrong direction. Refer to Belt Routing for correct belt routing. Or, refer to the Belt Routing Label located in the engine compartment. The correct belt with correct length must be used.

Position fan shroud and fan blade/viscous fan drive assembly to vehicle as a complete unit.
Be sure the upper and lower portions of the fan shroud are firmly connected. All air must flow through the radiator.
Install two fan shroud-to-radiator nuts Fan Shroud Mounting Hardware
Be sure of at least 25 mm (1.0 inches) between tips of fan blades and fan shroud.
Install fan blade/viscous fan drive assembly to water pump shaft.
Fill cooling system. Refer to Refilling the Cooling System in this group.
Connect negative battery cable.
Start and warm the engine. Check for leaks

If you have any questions feel free to ask. Let me know if you dont get diagrams(happens sometimes)

Reverse rotation water pump—2.5L and 4.0L engines

1. Before servicing the vehicle, refer to the precautions in the beginning of this manual.
2. Drain the cooling system.
3. Remove or disconnect the following: NOTESome 4.0L engines are equipped with a fan clutch that threads Directly on to the water pump shaft. This fan clutch is equipped with right-hand threads. NOTEDo not store the fan clutch assembly horizontally, silicone may leak into the bearing grease and cause contamination. NOTEOne of the water pump bolts is longer than the others. Note the location for reassembly.
   • Negative battery cable
   • Electric cooling fan connector
   • Accessory drive belt
   • Engine cooling fan and pulley
   • Water pump pulley
   • Power steering pump
   • Lower radiator hose from the water pump
   • Heater hose
   • Water pump and discard the gasket

To install:

1. Clean the mating surfaces of all gasket material.
2. Install or connect the following:
   • Water pump using a new gasket. Torque the bolts to 17 ft. lbs. (23 Nm).
   • Heater hose
   • Lower radiator hose
   • Water pump pulley. Torque the bolts to 20 ft. lbs. (27 Nm).
   • Power steering pump
   • Engine cooling fan and shroud. Torque the bolts to 31 inch lbs. (3 Nm).
   • Accessory drive belt
   • Electric cooling fan connector
   • Negative battery cable
3. Fill and bleed the cooling system.
4. Start the engine, check for leaks and repair if necessary.

3.7L Engine

1. Before servicing the vehicle, refer to the precautions in the beginning of this manual.
2. Drain the cooling system.
3. Remove or disconnect the following:
   • Negative battery cable
   • Fan and clutch assembly from the pump
   • Fan shroud and fan assembly. If you’re reusing the fan clutch, keep it upright to avoid silicone fluid loss!
   • Lower hose
   • Water pump (8 bolts)
4. Installation is the reverse of removal. Tighten the bolts, in sequence, to 40 ft. lbs. (54 Nm). Water pump tightening sequence—3.7L