Chevrolet Cavalier Crankshaft Position Sensor Guide (1987-1996)
Everything Cavalier owners need to know about diagnosing and replacing a faulty crankshaft position sensor.
- A failed crank sensor is a common cause of a 'crank, no start' issue on Cavaliers.
- Always verify your specific engine (2.0L, 2.2L, 2.4L, V6) before buying, as the part and location are different.
- Prioritize quality brands like ACDelco or Delphi; a cheap sensor can fail quickly and leave you stranded.
- Always inspect the wiring and connector for damage before assuming the sensor itself is bad.
Understanding the Crankshaft Position Sensor in Your Cavalier
For the 1987-1996 Chevrolet Cavalier, the crankshaft position sensor (CKP) is the master clock for the engine. It provides the essential timing signal that the entire ignition and fuel system relies on. When it works, the engine runs smoothly. When it fails, it can cause everything from a rough idle to leaving you stranded with a car that cranks but refuses to start. Given the age of these vehicles, sensor failure is a common issue.
Important: Engine and Year Differences
The 1987-1996 period covers multiple Cavalier generations and engines (2.0L, 2.2L, 2.8L V6, 3.1L V6, 2.4L). The location and part number for the crankshaft sensor can be very different depending on your specific engine. For example, on some 2.0L engines, it's near the coil packs, while on the 2.2L it's often on the back of the engine block, and on the 2.4L it's located just above the oil filter. Always verify your engine size before ordering a part.
Choosing the Right Aftermarket Sensor
With dozens of options available, picking the right sensor can be confusing. For a part this critical, quality should be the priority over price. A cheap, unreliable sensor can fail quickly, leaving you with the same problem. Here’s a breakdown of brand quality based on real-world feedback.
- Tier 1 - OEM & Premium Aftermarket: Brands like ACDelco (the original GM part supplier) and Delphi are your best bet for reliability and fit. They are engineered to the original factory specifications. For a critical part that can leave you stranded, spending a little more here is a wise investment.
- Tier 2 - Trusted Aftermarket: Brands such as NGK, Hitachi, Standard Motor Products (SMP), and Walker Products have a solid reputation for producing quality sensors that are a good alternative to OEM parts.
- Tier 3 - Budget Options: Brands like Dorman and other lower-priced options are available. While the price is tempting, these brands have a mixed reputation for electronic components, with some owners reporting premature failures. Consider these a budget-conscious choice but be aware of the potential for shorter service life.
Pro Tip: Check the Simple Things First
Before you replace the sensor, inspect the wiring and the connector. A loose, corroded, or oil-soaked connector can cause the same P0335 code and symptoms as a failed sensor. Sometimes, simply cleaning the connection or repairing a damaged wire can solve the problem.
Cost Comparison for a New Crankshaft Position Sensor
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket | $18.28 - $134.79 |
| New OEM (ACDelco/GM Genuine) | $60 - $150 |
| Shop Labor | $100 - $250 |
Frequently Asked Questions (FAQ)
What are the main symptoms of a bad crank sensor on a Cavalier?
The most common symptoms are the engine cranking but not starting, stalling for no reason (especially when warm), rough idling, engine misfires, and a lit Check Engine Light.
What does the code P0335 mean?
P0335 stands for "Crankshaft Position Sensor 'A' Circuit Malfunction." It means the car's computer is not receiving a proper signal from the sensor, which could be due to a bad sensor, wiring problems, or issues with the connector.
Where is the crankshaft sensor located on a 1987-1996 Cavalier?
The location depends on your engine. For 2.2L engines, it is often on the rear of the engine block, below the intake manifold. For 2.4L engines, it is typically found on the front of the engine, above the oil filter housing. For V6 and early 2.0L engines, the location varies. Always consult a repair guide for your specific year and engine.
Can I replace this sensor myself?
Yes, this is a DIY-feasible job for someone with basic mechanic tools and patience. However, access can be very tight depending on the engine, sometimes requiring removal of other parts like the oil filter or starter. The sensor is typically held in by a single small bolt (often 8mm or 10mm). Be careful, as old sensors can become brittle and break during removal.
Is an expensive ACDelco sensor really better?
For critical sensors like this one, yes. ACDelco is the original equipment manufacturer for GM. While there are different tiers of ACDelco parts, they generally offer better reliability and a more precise fit than many budget brands. Owner and mechanic forums strongly recommend using OEM or premium aftermarket brands to avoid having to do the job twice.
Technical Specifications
OEM Part Numbers: 10456043 10456295 10456134 1103703 24576398 10456243 10456403
Typically a 2-pin magnetic sensor that bolts to the engine block. The design varies significantly between the 2.0L, 2.2L, 2.4L, and V6 engines used in this period.
We Have This Part in Stock
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.
- Chevrolet Cavalier: