Hello! I just purchased a 2006 Quad Cab SLT 3.7l (Standard Trans) for pretty cheap, partially due to the fact that it had a CEL and wouldn't rev above 2,500 RPMs. I assumed it was the Cam position sensor, and a code scan confirmed my suspicion. I know this is a super easy job, but I didn't see a write-up for this, so I thought I'd make a quick one.

Symptoms:

- Long cranking start
- Won't rev above 2,500 RPMs
- Throwing a code: P0340

Solution: New camshaft position sensor (readily available for around $30), located on the passenger side of the motor

Tools:
- 10mm Socket & Wrench
- Extension (optional)
- Flatblade screwdriver

Steps:

**I am not a mechanic, I'm simply documenting what worked for me**

1. Disconnect the negative battery terminal


2. Remove the airbox by popping off the metal clips and unbolting the 10mm bolt towards the passenger side fender. Pull hard upwards to remove.

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3. Locate the cam position sensor under valve cover (gray connector shown in picture below). Sensor is oriented upside down, so the connector is what's visible.


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4. Unbolt the 10mm bolt holding the sensor in, located in front of the sensor if you're facing the truck.

5. Pull downwards to remove the sensor and connector.

6. Disconnect the connector by pushing squeezing it.

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7. Plug in new sensor and install back into the hole, with the bracket facing the front of the vehicle **Note that when I pulled my sensor, the connector was filled to the brim with oil. I suspect the sensor wasn't even bad, but it was so full with oil it was not transmitting any data. I cleaned the connector thoroughly and used copious amounts of electrical tape to prevent this from happening again (see 3rd picture for tape job) - we'll see. Picture below is a poor attempt at displaying the amount of oil sitting in the connector**


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8. Tighten down bolt and drop airbox back into place, bolting it down as well.


Old vs. New:


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It's a super easy job that took me 15 minutes to complete, but I didn't see a formal write-up and most of the information I saw was pertaining to the V8 (though it appears to be the same process as the 3.7l). Sorry if this is redundant or basic info, but I just thought I'd share. It's a quick and easy job that allowed me to have a dependable running truck for under $1,500! Next up for my dak: intermediate steering shaft.


Thanks!

 

Nice job.

Was that replacement sensor OEM?

 

I'm ashamed to admit the sensor was not OEM; however, I needed a quick fix and I knew I will need to replace the connector fairly soon anyway, so I'm not going for longevity with this one.

Great point, though - use the OEM cam position sensor - it's not worth having to do the job again becuase it's still throwing a code. When I solder on a new connector, I will replace with an OEM.