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Radiator Fan Replacement
 
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Pelican Technical Article:

Radiator Fan Replacement

Jared Fenton

Time:

3 hours3 hrs

Tab:

$500 to $1,000

Talent:

****

Tools:

T20/T30 Torx drivers, flathead screwdriver

Applicable Models:

Porsche 955 Cayenne (2004-08)
Porsche 955 Cayenne GTS (2008)
Porsche 955 Cayenne S (2003-08)
Porsche 955 Cayenne Turbo (2003-08)
Porsche 955 Cayenne Turbo S (2006)

Parts Required:

Radiator fans

Hot Tip:

Visually inspect the radiator for any signs of damage or leaks

Performance Gain:

Better engine cooling

Complementary Modification:

Replace radiator

Replacing the radiator fans on the Porsche Cayenne is a pretty straight forward job, although there are a few important steps to follow. Removing the fans first requires removing the front engine cover and intake tubes leading to the throttle body. See our articles on Engine Cover Removal and Throttle Body Cleaning for more information.

Loosen and remove the two T30 Torx screws (green arrows) shown here.
Figure 1

Loosen and remove the two T30 Torx screws (green arrows) shown here. These hold the radiator mounts to the upper bulkhead. This is done so you can push the radiator assembly slightly inward when removing the fan shroud.

On the front of the shroud are the electrical connections.
Figure 2

On the front of the shroud are the electrical connections. Open the retaining clamp (green arrow) with a flatblade screwdriver and pull the locating grommet (yellow arrow) out from the fan shroud. Pull the electrical connector (purple arrow) out of the holding clip.

Locate the locking tab (green arrow) on the electrical connector.
Figure 3

Locate the locking tab (green arrow) on the electrical connector. Press the tab and pull the connector apart. Move the wiring harness out of the way.

Press the locking tab (green arrow) on the lower electrical connector and pull the connector apart.
Figure 4

Press the locking tab (green arrow) on the lower electrical connector and pull the connector apart.

Note the two â€Å
Figure 5

Note the two "fingers" along the top edge of the fan shroud. It's important that both of these are correctly seated when re-installing the shroud.

The next step is to release the fan shroud from the locking tabs.
Figure 6

The next step is to release the fan shroud from the locking tabs. These are located on both left and right sides of the fan shroud, about halfway down. This picture shows the left side of the radiator looking towards the rear of the car. The right side is hard to get aPicture of due to hoses blocking the view. Press the locking tab (green arrow) in while pulling the shroud (yellow arrow) upwards. It may take a little effort to get the shroud started to move upward. Porsche specifically states to use a crowbar to loosen the shroud if stuck.

Now carefully remove the fan shroud assembly from inside.
Figure 7

Now carefully remove the fan shroud assembly from inside. You'll need to move it from side to side as you lift it out to clear the lower radiator hose outlet.

Shown here is the fan shroud removed from the car.
Figure 8

Shown here is the fan shroud removed from the car. The larger fan (green arrow) is used for engine cooling while the smaller fan (yellow arrow) is used to cool the air conditioning condenser.

Loosen and remove the three T30 Torx screws (green arrows) holding the AC fan to the shroud.
Figure 9

Loosen and remove the three T30 Torx screws (green arrows) holding the AC fan to the shroud. Also remove the four T20 Torx screws (yellow arrows) holding the resistor pack to the shroud. Release the wiring harness from under the tab above and maneuver the fan out of the shroud.

The engine cooling fan is a little trickier to remove.
Figure 10

The engine cooling fan is a little trickier to remove. First remove the three T30 Torx screws (green arrows) securing the fan to the shroud.

Carefully pull the wiring harness out of the retaining clip (green arrow).
Figure 11

Carefully pull the wiring harness out of the retaining clip (green arrow).

Follow the harness back through the shroud to the retaining tab (green arrow).
Figure 12

Follow the harness back through the shroud to the retaining tab (green arrow). Pull the tab out enough to slide the wiring harness (yellow arrow) down and out of the shroud.

Now remove the resistor pack by prying back the locking tab (green arrow) and sliding a flathead screwdriver in between the shroud and the resistor pack.
Figure 13

Now remove the resistor pack by prying back the locking tab (green arrow) and sliding a flathead screwdriver in between the shroud and the resistor pack. You'll need to pop it out. When installing the new fan, pop the resistor pack back up into place, making sure the locking tab on top (purple arrow) is locked in place. Installation is the reverse of removal.

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