Camshaft position sensors, or CAM sensors, help adjust engine timing for optimum fuel efficiency and power. When one or more camshaft position sensors fail, it can cause the engine to run rough or even cause problems starting the vehicle. If the engine control module isn’t receiving a signal from one or more cam sensors, it will trigger a check engine light. You can have your code scanned at your local O’Reilly Auto Parts store to determine which camshaft position sensor has failed.

Full job and supplies: [ Ссылка ]

Supplies Needed for This Job:
1. Safety Glasses: [ Ссылка ]
2. Gloves: [ Ссылка ]
3. Flathead Screwdriver: [ Ссылка ]
4. Camshaft Sensor: [ Ссылка ]
5. Socket/Ratchet: [ Ссылка ]

0:00 Welcome Back
0:14 Camshaft Sensor Basics
1:07 Prep the Vehicle
1:32 Remove the Old Sensor
1:59 Inspect the Sensor
2:13 Install the New Sensor
2:29 Reinstall Removed Items

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Hey everybody— Dani here from O’Reilly Auto Parts to show you how to change your camshaft position sensors. Before I get into that, take a second to subscribe to our channel if you haven’t already, so you don’t miss out on any of our new content.

Camshaft position sensors help adjust engine timing for optimum fuel efficiency and power. When one or more camshaft sensors fail, it can cause the engine to run rough or even cause problems starting the vehicle. If the engine control module isn’t receiving a signal from one or more cam sensors, it will trigger a check engine light. You can have your code scanned at your local O’Reilly Auto Parts store to determine which sensor has failed.

Today, I’ll be changing the camshaft position sensor on this 2005 Jeep Liberty with a 3.7 liter engine. This vehicle only has one camshaft sensor, but other vehicles may have two. Procedures will vary from one vehicle to the next, so be sure to know the specifics for your vehicle before getting started. If you’re not completely comfortable doing this yourself, we’d be happy to recommend a professional technician in your area.

If you’ve determined this is your problem and you’ve got your supplies together, here’s what you’ll do:

Park on a level surface and open the hood.
For this or ANY time you work with sensors or electrical components, always disconnect your positive battery cable.
It may be easiest to remove and replace the camshaft sensor from under your vehicle, but we’ll show you how to do it from the top by removing the air filter housing.

Unsnap the spring clips from the air filter housing cover.
Loosen the hose clamp that attaches the housing cover to the air inlet tube.
Remove the air filter housing cover and air filter.
Remove the air inlet above the radiator support by pulling out at the base and disconnecting from the air filter housing.
The air filter housing simply snaps into the inner fender, and can be removed by pulling up on the housing firmly.


Locate the camshaft position sensor.
You’ll find the cam sensor on this Jeep on the passenger side of the engine, near the front.
Remove the electrical connector.
Visually inspect the camshaft pigtail to make sure it isn’t damaged or dirty.
Oil and corrosion could affect the signal from the sensor to the engine control module.
Remove the bolt on the camshaft position sensor retaining ring. In our case, it’s 10mm.
Twist gently to remove the cam sensor.
Visually inspect the camshaft position sensor to make sure it hasn’t been contaminated by a leak from another engine component.
If it has, repair the leak to prevent the new camshaft position sensor from being damaged.
Check to make sure the o-ring from the cam sensor hasn’t fallen into its hole.

**View full video for complete instructions**

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