Mercedes-Benz Parts Catalog Mercedes-Benz Accessories Catalog Mercedes-Benz Technical Articles Mercedes-Benz Tech Forums
 
Follow Pelican Parts on Facebook Follow Pelican Parts on Twitter Follow Pelican Parts on Instagram Follow Pelican Parts on YouTube Follow Pelican Parts on Pinterest Follow Pelican Parts on Tumblr
  Search our site:    
View Recent Cars  |   Cart  | Project List | Order Status | Help    
 >  >
Camshaft Position Sensor Replacement
 
Bookmark and Share

Pelican Technical Article:

Camshaft Position Sensor Replacement

Steve Vernon

Time:

1 hour1 hr

Tab:

$30

Talent:

*

Tools:

5mm Allen

Applicable Models:

Mercedes-Benz 300CE (1990-93)
Mercedes-Benz 300E (1990-93)
Mercedes-Benz 300TE (1989-92)
Mercedes-Benz E320 (1994-95)

Parts Required:

New camshaft position sensor

Hot Tip:

Be sure the O-ring is replaced

Performance Gain:

Better control of fuel injection and engine timing

Complementary Modification:

Replace crankshaft position sensor

Your fuel injection computer (DME) may output a code that indicates a faulty camshaft position sensor (CPS). This important sensor tells the car's computer where the cams are located in relation to the combustion cycle. The DME takes the signals from both the cam position sensor and crankshaft position sensor, and calculates when to fire the fuel injectors and spark plugs. If the camshaft position sensor is not operating properly, your car will run very erratically or perhaps not at all.

Replacement of the camshaft sensor is easy especially when compared to replacing the crankshaft sensor.

The sensor is located on the front left side of the cylinder head right beside the thermostat and water pump (red arrow).
Figure 1

The sensor is located on the front left side of the cylinder head right beside the thermostat and water pump (red arrow).

Pull the electrical connection (red arrow) straight away from the sensor (yellow arrow).
Figure 2

Pull the electrical connection (red arrow) straight away from the sensor (yellow arrow). Note: the coolant hoses have been removed in this series of pictures but you do NOT need to remove them to replace your sensor.

Use a 5mm Allen and remove the two bolts holding the sensor to the head (red arrows).
Figure 3

Use a 5mm Allen and remove the two bolts holding the sensor to the head (red arrows).

Pull the sensor (red arrow) straight back out of the head (yellow arrow).
Figure 4

Pull the sensor (red arrow) straight back out of the head (yellow arrow).

Check that the small O-ring on the sensor has not remained in the cylinder head.
Figure 5

Check that the small O-ring on the sensor has not remained in the cylinder head. If it has use a small pick to remove it making sure not to scratch the opening. Installation is the reverse of removal.

Bookmark and Share
Comments and Suggestions:
quest1966 Comments: See service manual operation 15-2143G: http://w124-zone.com/downloads/MB%20CD/W124/w124CD1/Program/Engine/104/Engine%20104%20Combustion%20I/15-2143G.pdf. If installing a new sensor, the gap should be checked which would require removing the valve cover. However, if you install it, don't check it, and no fault codes are produced, all is likely good. My sensor has a shim on it so the gap on some need to be adjusted.
June 12, 2015
  Followup from the Pelican Staff: Thanks for the additional info and feedback. We appreciate it.
- Nick at Pelican Parts
 
oldtrucker Comments: I was under the impression that in some case, there would be some shimming required. I believe a feeler gauge is used to determine the distance between the sensor and the the sender on the cam shaft. This will require the Valve cover to be removed and measure it from atop.
Perhaps, I am going to deep with that and it probably is not necessary at all?
November 3, 2014
  Followup from the Pelican Staff: I do not recall this sensor needing a shim procedure. - Nick at Pelican Parts  

  Search our site:    

View Cart & CheckOut | Project List | Order Status |  Help    

 

[Home] [Customer Service] [Shopping Cart] [Project/Wish List]
  [Privacy Statement]  [Contact Us] [About Us] [Shipping] [Careers]

Copyright © Pelican Parts Inc. -    DMCA Registered Agent Contact Page

Page last updated: Fri 12/9/2016 02:59:54 AM