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Cooling fan not working

Tiny
JASON SAMPSON
  • MEMBER
  • 2004 CADILLAC SRX
  • 4.6L
  • V8
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
One of my cooling fans come on and the other one won't even when you turn on the A/C. I took the whole assembly out and jumped the one that wasn't working. Nothing until I applied a little pressure with my finger to the middle of the fan (slightly to one side), then it started spinning good until I let my finger off. I took the blade off and jumped it again and the shaft was spinning good with no assistance. Put the fan blade back on the same thing as before. Will only spin if slight pressure is applied a tiny bit off the center of fan.
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Friday, October 4th, 2019 AT 4:47 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
Welcome to 2CarPros.

If the blade isn't toughing anything to prevent it from turning, chances are the motor, although it runs without the blade, doesn't have the power to turn the fan blade, In this case, I would replace the fan motor.

Here are the directions for replacing the motor. The attached pictures correlate with the directions,

_______________________________

2004 Cadillac Truck SRX 2WD V8-4.6L VIN A
Cooling Fan Motor Replacement - Electric
Vehicle Engine, Cooling and Exhaust Cooling System Radiator Cooling Fan Radiator Cooling Fan Motor Service and Repair Procedures Cooling Fan Motor Replacement - Electric
COOLING FAN MOTOR REPLACEMENT - ELECTRIC
Cooling Fan Motor Replacement - Electric

Removal Procedure
1. Remove the cooling fan assembly.

Pic 1

2. Remove the fan blade retaining nut (1) from the motor.

Pic 2

3. Remove the fan blade from the motor shaft.

Pic 3

4. Remove the motor retaining screws (1).

Pic 4

5. Remove the motor from the shroud.

Installation Procedure

pic 5

1. Install the motor to the shroud.

Pic 6

2. Notice: Refer to Fastener Notice in Service Precautions.

Install the cooling fan motor retaining screws (1).
Tighten the screws to 5 Nm (44 inch lbs.).

Pic 7

3. Install the fan blade to the motor shaft.
4. Rotate the fan until the fan drops onto the shaft.

Pic 8

5. Install the fan blade retaining nut (1) to the motor.
Tighten the nut to 7 Nm (62 inch lbs.).
6. Install the cooling fan assembly.
_______________________

Let me know if this helps.

Take care,

Joe
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Friday, October 4th, 2019 AT 9:07 PM
Tiny
JASON SAMPSON
  • MEMBER
  • 3 POSTS
Appreciate you trying to help. A couple of people have said the same thing about it possibly being the motor. I was thinking maybe it was the bearings, but not sure due to my inexperience in this field. I'll post the results when I figure it out.
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Saturday, October 5th, 2019 AT 8:40 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
Welcome back:

You can run power direct to the fan motor to check if it will run. Let me know what you find or if you have questions.

Take care,
Joe
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Saturday, October 5th, 2019 AT 9:37 PM
Tiny
JASON SAMPSON
  • MEMBER
  • 3 POSTS
It's getting power but you have to apply pressure with your finger or a screwdriver towards the center of the fan for it to engage. If you dont it won't spin! If you slide the fan off and apply power, the shaft by itself has no problem spinning on its own.
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Saturday, October 5th, 2019 AT 11:45 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
Welcome back:

If there is nothing rubbing or stopping the fan blade, the fan motor is most likely bad even though you can get it to turn.

Let me know if that takes care of the issue.

Joe
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Sunday, October 6th, 2019 AT 8:14 PM

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