Ford Escort Camshaft Position Sensor Guide (1991-1997)
Everything you need to know about replacing the camshaft position sensor on your 1991-1997 Ford Escort.
- A failing sensor will cause a Check Engine Light (P0340), stalling, and no-start issues.
- This is a simple sensor replacement; your Escort does not have the complex and failure-prone 'camshaft synchronizer' found in other Fords.
- Replacement is easy for DIYers, requiring only a single bolt and access to the back of the engine on the driver's side.
- Choose a quality aftermarket brand like Standard (SMP), NGK, or Delphi; avoid the cheapest options to prevent repeat failures.
Is Your Escort Running Rough? It Could Be the Camshaft Position Sensor
If your 1991-1997 Ford Escort is suddenly hard to start, stalling, or running poorly, a failing camshaft position sensor is a common suspect. This sensor is essential for proper engine timing. When it fails, it can cause a range of noticeable issues. Fortunately, on the 1.9L and 2.0L engines in these Escorts, the sensor is a simple, standalone part that is relatively easy to replace.
Symptoms of a Failing Camshaft Sensor on Your Escort
A bad camshaft position sensor will almost always trigger the Check Engine Light. If you scan the code, you will likely see P0340 (Camshaft Position Sensor Circuit Malfunction). Beyond the light on your dash, you may experience one or more of the following:
🎬 Watch: See these common symptoms in action.- Hard Starting or No Start: The engine may crank for a long time before starting, or it may not start at all. This happens because the PCM doesn't know the correct time to deliver fuel and spark.
- Engine Stalling: The engine may stall unexpectedly while driving or when coming to a stop. This can be a serious safety issue.
- Rough Idle and Misfires: Your Escort may vibrate or shake at idle due to engine misfires.
- Loss of Power: You might notice the car feels sluggish and doesn't accelerate as it should.
- Poor Fuel Economy: When the engine timing is off, it burns fuel less efficiently, leading to more trips to the gas pump.
A Note on Code P0340
While the P0340 code most often points to a failed sensor, the "Circuit Malfunction" means the problem could also be in the wiring, the connector, or even the engine computer (PCM). On some other Ford vehicles, a faulty alternator has been known to cause electrical interference that triggers this code. Always inspect the wiring and connector for damage or corrosion before replacing the sensor.
🎬 Watch: Why a new sensor might not fix code P0340.Choosing the Right Aftermarket Sensor
For a vehicle like the 1991-1997 Escort, OEM Motorcraft parts can be difficult to find or discontinued. The aftermarket is your most likely source. However, quality varies significantly, and for a critical sensor like this, it's best to avoid the cheapest options.
- Tier 1 (Premium Aftermarket): Brands like Standard Ignition (SMP), NGK, and Delphi are well-regarded and often produce parts that meet or exceed original specifications. They are a reliable choice for fit and long-term performance.
- Tier 2 (Standard Aftermarket): Brands like Dorman and Walker Products offer a balance of value and quality. While generally reliable, some forum users have reported mixed experiences with Dorman sensors on Ford vehicles.
- Tier 3 (Economy): Budget-friendly brands like Global Parts or other lesser-known names are available. While the low price is tempting, these sensors have a higher risk of premature failure, which could leave you stranded and replacing the part again.
Pro Tip: Not a Camshaft Synchronizer
Some Ford engines from the 1990s use a complex "camshaft synchronizer" that looks like an old distributor and also drives the oil pump. These are known to fail and make a chirping noise. Your 1991-1997 Escort's 1.9L or 2.0L engine does not use this assembly. It uses a simple, two-wire sensor that bolts directly to the engine, making the job much easier.
Cost to Replace a Ford Escort Camshaft Position Sensor
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket Part | $16 - $30 |
| Shop Labor | $75 - $125 |
| Total Professional Replacement | $91 - $155 |
Frequently Asked Questions
Where is the camshaft position sensor located on a 1991-1997 Escort?
On the 2.0L SOHC engine (common in 1997), the sensor is located on the driver's side, at the rear of the cylinder head. Its location on the 1.9L engine is similar, mounted on the head where it can read the camshaft. It is held in by a single bolt.
Can I replace this sensor myself?
Yes, this is a very DIY-friendly job for most home mechanics. It typically requires only basic hand tools, like a socket to remove the single bolt. The process involves disconnecting the battery, unplugging the electrical connector, removing the bolt, and swapping the sensor. The estimated time is under 30 minutes.
🎬 See this walkthrough for a quick sensor replacement.Do I need to do anything after replacing the sensor?
After installing the new sensor, you should clear the P0340 trouble code from the computer using an OBD-II scanner. If you don't have a scanner, the Check Engine Light may turn off on its own after several drive cycles, but it's best to clear it manually.
What is the difference between a camshaft and a crankshaft sensor?
They work together. The camshaft sensor tracks the valve timing, while the crankshaft sensor tracks the piston position. The PCM uses both signals to manage the engine. A failure in either sensor can cause similar symptoms, but they will produce different trouble codes (P0340 for cam, P0335 for crank).
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Technical Specifications
OEM Part Numbers: F1AZ-6B288-A 1W7Z-6B288-AB 7T4Z-6B288-A DU87
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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.
- Ford Escort:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Escort Running Rough? It Could Be the Camshaft Position Sensor
- Symptoms of a Failing Camshaft Sensor on Your Escort
- A Note on Code P0340
- Choosing the Right Aftermarket Sensor
- Pro Tip: Not a Camshaft Synchronizer
- Cost to Replace a Ford Escort Camshaft Position Sensor
- Frequently Asked Questions
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