Engine Camshaft Position Sensor: A Guide for the 1994-1999 Chrysler Voyager
Diagnose stalling and starting problems in your Voyager and learn how to choose the right replacement camshaft position sensor.
- A failing camshaft sensor is a common cause of stalling, no-start, and a P0340 code on 1994-1999 Voyagers.
- To avoid repeat failures, it is often recommended to use an OEM Mopar part or a premium aftermarket brand like NGK or Standard Ignition.
- When installing a new sensor, do not remove the paper spacer on the tip; it is there to set the correct installation depth.
- Before replacing the part, inspect the sensor's wiring and connector for damage, as the fault could be there instead.
Is Your Voyager Stalling or Hard to Start? It Could Be the Cam Sensor.
If your 1994-1999 Chrysler Voyager is suddenly stalling, having trouble starting, or the Check Engine Light is on, a faulty camshaft position sensor is a likely culprit. This sensor is essential for proper engine timing, and when it fails, it can cause a range of noticeable problems. Because it can cause the engine to shut off while driving, it's a repair you shouldn't ignore.
Common Failure Symptoms
- Check Engine Light: This is often the first warning. The most common code associated with this part is P0340, which points to a problem in the camshaft position sensor circuit.
- Engine Stalling: The engine may shut off unexpectedly while you are stopped at a light or even while driving.
- No Start or Hard Start: Your Voyager may crank for a long time before starting, or it may not start at all.
- Rough Performance: A bad sensor can cause the engine to run rough, hesitate when you accelerate, misfire, or feel like it has less power.
- Poor Fuel Economy: When the engine's timing is off, it burns more fuel than necessary.
Choosing the Right Aftermarket Sensor: Quality Matters
When it comes to electronic sensors for your Voyager, not all aftermarket parts are created equal. While budget-friendly options are available, owner experiences suggest that quality is very important for this specific part to avoid having to do the job more than once.
Brand Quality Tiers
- Premium Aftermarket (e.g., NGK, Standard Ignition): Brands like Standard Motor Products (SMP) and NGK have a strong reputation for producing reliable sensors that meet or exceed original factory standards. These are often considered a safe alternative to the dealer part.
- Standard/Value Aftermarket (e.g., Dorman, Walker, Spectra): These brands offer a balance of affordability and availability. However, for critical electronic parts like a cam sensor, some owners have reported premature failures with budget-tier brands. While they can be a good value, there is a higher risk of getting a defective part out of the box or having it fail sooner than a premium option.
- OEM (Mopar): The original Mopar sensor is widely considered the most reliable choice to guarantee compatibility and longevity. If you want to fix the problem once and not worry about it again, using the OEM part is your best bet, though it comes at a higher cost.
Replacement Cost
The cost to replace the camshaft position sensor on your Voyager will vary depending on the brand you choose and whether you do the work yourself.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Part | $29 - $68 |
| New OEM (Mopar) Part | $90 - $150 |
| Shop Labor | $100 - $150 |
| Total Professional Replacement | $130 - $300 |
Frequently Asked Questions
Where is the camshaft position sensor located on a 94-99 Voyager?
For the common 3.3L and 3.8L V6 engines, the camshaft position sensor is on the front of the engine, mounted into the timing chain cover. You will need to remove the ignition coil pack and a small motor mount brace to get access to it. It is held in place by a single 10mm bolt.
Can I replace this sensor myself?
Yes, this is a DIY-friendly job for someone with basic tools. The main challenge is the tight space. You'll need a socket set to remove the coil pack and the sensor bolt. The job typically takes about an hour.
Is there a trick to installing the new sensor?
Yes. Many new sensors come with a small paper spacer on the tip. Do not remove this spacer. It is designed to set the correct distance between the sensor and the camshaft gear. It will safely wear off on its own after the engine is started. Also, apply a small amount of clean engine oil to the new O-ring to help it seal properly.
Are there any recalls for this part on my Voyager?
No, searches of the NHTSA database did not show any recalls for the camshaft position sensor on the 1994-1999 Chrysler Voyager.
Technical Specifications
OEM Part Numbers: 4686137 4727138 4727138AB
Fits 1994-1999 Chrysler Voyager models, typically with the 3.3L or 3.8L V6 engines. The sensor is a Hall-effect type with a 3-pin connector. It mounts on the front timing cover.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
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