Pelican Parts
Porsche Parts Catalog Accessories Catalog Porsche How To Articles Porsche Tech Forums
Call Pelican Parts at 888-280-7799
View Recent Cars  |Shopping Cart Cart | Project List | Order Status | Help
 >  >
Blower Motor Regulator Replacement
 
Bookmark and Share

Pelican Technical Article:

Blower Motor Regulator Replacement

Steve Vernon

Time:

30-60 minutes

Tab:

$675

Talent:

**

Tools:

Short Philips head screwdriver, long flathead screwdriver, 8mm (2) wrenches

Applicable Models:

Porsche 993 Carrera (1995-98)
Porsche 993 Carrera 4 (1995-98)
Porsche 993 Carrera 4S (1996-98)
Porsche 993 Carrera S (1998)
Porsche 993 Targa (1996-98)
Porsche 993 Turbo (1996-97)

Parts Required:

Blower motor regulator

Hot Tip:

make sure you check everything else before you replace this

Performance Gain:

Variable blower motor speeds

Complementary Modification:

Change cabin filters

If you are have having trouble with your fan speeds, it might be a faulty regulator. This regulator very, very rarely fails and it is very expensive to replace. Therefore, it's a good idea to check all of your resistors, switches and components before replacing this piece. The blower motor regulator is mounted on the rear of the firewall under the hood. Replacing it is not a difficult chore.

Over the years your car may have been serviced by multiple people including previous owners and this can lead to parts replaced with different size fasteners and hardware. The sizes of the nuts and bolts we give may be different from what you have so be prepared with different size sockets and wrenches. If something is different on your vehicle please let us know and share your info to help other users. If you have any questions or comments or even a different procedure you would like to share please leave it below and please include your vehicle information.

The blower motor regulator is located on the rear center of the firewall (red arrow).
Figure 1

The blower motor regulator is located on the rear center of the firewall (red arrow).

To access it, begin by pulling up and removing the rubber seal on the firewall (red arrow).
Figure 2

To access it, begin by pulling up and removing the rubber seal on the firewall (red arrow).

Remove the two Philips head screws (red arrows) and lift the shroud cover up and out.
Figure 3

Remove the two Philips head screws (red arrows) and lift the shroud cover up and out.

You can now see the electrical connection (red arrow) for the regulator and the two 8mm nuts and bolts (yellow arrows) that attach the heat sink to the housing.
Figure 4

You can now see the electrical connection (red arrow) for the regulator and the two 8mm nuts and bolts (yellow arrows) that attach the heat sink to the housing.

Begin removal by squeezing in the clips on the connector and pulling it straight up and out from the regulator (yellow arrows).
Figure 5

Begin removal by squeezing in the clips on the connector and pulling it straight up and out from the regulator (yellow arrows). Next, gently pry the harness clip out as well (red arrow).

You will need to use two 8mm wrenches to remove the nuts and bolts holding the regulator and heat sink to the firewall.
Figure 6

You will need to use two 8mm wrenches to remove the nuts and bolts holding the regulator and heat sink to the firewall. The right side bolt is easy to access (red arrow) but the left side is hidden under a carpet clip (yellow arrow).

If you cannot get your wrench on the nut or bolt under the carpet clip you will need to remove the fuel expansion tank (yellow arrow) or the firewall (red arrow) to gain access.
Figure 7

If you cannot get your wrench on the nut or bolt under the carpet clip you will need to remove the fuel expansion tank (yellow arrow) or the firewall (red arrow) to gain access. Please see our articles on these procedures but I find moving the expansion tank easier.

With the firewall out of the vehicle you can see the metal plate and blower motor regulator mounted on the rear.
Figure 8

With the firewall out of the vehicle you can see the metal plate and blower motor regulator mounted on the rear. Installation of the new unit is the reverse or removal.

Bookmark and Share

QUICK LINKS
About Us
Careers
Pelican Parts, Inc.
1600 240th Street
Harbor City, CA 90710
Order Online or Call:
888-280-7799
CONNECT WITH US
NEWSLETTER
Sign Up for Pelican Pit Stop News & Special Offers
Page last updated: Tue 8/15/2017 03:25:18 AM