Question about Cars & Trucks
Crankshaft Position Sensor Replacement Guide
The following is the
procedure I developed to change the Crankshaft
Position Sensor (CPS ) on my 1996 Saab 900S
2.3 L NA. It is a very simple part to replace, and is also a cheap part, at $42
from the dealer I bought it from (who would've thought a dealer would have a
part for a good price, let alone have the part I wanted at all ). In
case you were wondering, here is how I confirmed the CPS was not working
correctly. The car would not start sometimes on hot days after short trips, it
would turn off if it got too hot while driving (which was scary), I could hear
the fuel pump working, I checked the started for the correct charge (it was fine
as I thought), I already did the Neutral
Safety Switch bypass as a
Here are the steps:
1) Make sure your engine bay is cool because you will be bumping into and touching the engine block and surrounding parts during this installation.
2) Locate the CPS. It is directly across from the radiator fan, about 8 inches down from the top of the fan. I can post pictures later tonight.
3) Using the largest torx screwdriver fitting that was supplied with the car, remove the single torx screw at the upper right of the CPS.
4) Now, before you remove the CPS, trace the wire it is connected to around the right side of the engine, and up under where the plenum/TB cover would reside. I have a custom intake so I did not have to remove anything to see this connection. There is a white plug with a red plastic box that penetrates the white plug perpendicularly. Simply pull the red box away from the large white connection to allow the CPS connection and wire to fall free.
5) Now, you can either patiently route the connection you just took apart back around the engine to get the old CPS out of there, or you can take as little time as I did and simply cut the wire in half and pull the ends out.
6) The CPS should now pull right out.
7) Quickly place the new CPS into the slot in the engine block, as to avoid any debris getting in there. MAKE SURE THE OLD O-RING COMES OFF AND THE NEW O-RING GOES ON the shaft of the new CPS before pushing the part in.
8) Retorx the screw.
9) Pull the end connection through all of the tubing and parts in your way. Find the metal spring-formed arch that holds the CPS wire from jingling about and with one hand, pry it open while you push the wire under the clip to secure it. This step can be tricky, but is very important to ensure the wire does not vibrate and prematurely malfunction.
10) Do the opposite of step 4
Posted on Nov 08, 2012
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Aug 24, 2015 | Saab Cars & Trucks
May 24, 2014 | 1997 Saab 900
Sep 06, 2009 | 1997 Saab 900
Jul 10, 2009 | 1998 Saab 900
Dec 30, 2008 | 1995 Saab 900
Oct 23, 2008 | 1995 Saab 900
Nov 20, 2017 | Cars & Trucks
Nov 20, 2017 | Cars & Trucks
257 people viewed this question
Usually answered in minutes!