Chrysler Cirrus Vehicle Speed Sensor Replacement Guide (1995-2005)
Fix your erratic speedometer and harsh automatic shifting issues by understanding and choosing the right speed sensor.
- A bad vehicle speed sensor is a common cause of erratic shifting and a dead speedometer on the Chrysler Cirrus.
- Confirm whether you need the input or the more commonly failed output sensor before buying; they are different parts.
- Always check the sensor's electrical connector for corrosion before replacing the part, as it can cause identical symptoms.
- Quality aftermarket brands like Delphi or Standard Ignition offer reliable performance without the high cost of an OEM part.
Understanding Your Cirrus Speed Sensors: Input vs. Output
Your 1995-2005 Chrysler Cirrus automatic transmission has two important speed sensors: an input sensor and an output sensor. It is very common to mix these up. The output sensor is the one that fails most often and is typically what people mean when they say 'Vehicle Speed Sensor' or VSS. It is responsible for your speedometer reading and controlling the transmission's overall shift pattern. The input sensor measures the speed of the transmission's input shaft and is used by the computer to ensure smooth shifts. While both are important, this guide focuses primarily on the more commonly failed output sensor.
Common Symptoms of a Failing Speed Sensor
When the output speed sensor on your Cirrus starts to go bad, the signs are usually obvious. You will likely experience one or more of the following issues:
- Erratic or Dead Speedometer: The speedometer needle may jump around randomly or not move at all.
- Harsh or Incorrect Shifting: The automatic transmission may slam into gear, shift at the wrong times, or get stuck in one gear (often called 'limp mode').
- Cruise Control Won't Work: The cruise control system relies on a steady speed signal, so it will disable itself if the sensor is faulty.
- Check Engine Light: A failing speed sensor will almost always trigger the Check Engine Light and store a diagnostic trouble code, most commonly P0500.
A Known Problem: Check the Connector First
Before you replace the sensor, inspect its electrical connector. Corrosion on the terminals can cause the exact same symptoms as a bad sensor. Cleaning the connector with an electrical contact cleaner might fix your problem for free.
Choosing the Right Aftermarket Speed Sensor
For a vehicle like the 1995-2005 Cirrus, a new aftermarket sensor provides the best value. OEM parts are often expensive and unnecessary for this repair. Aftermarket brands can be grouped into quality tiers.
Premium Aftermarket Brands ($40 - $67)
These brands are known for quality control that meets or exceeds original equipment standards. They are a top choice for reliability and longevity.
- Delphi: A major OE supplier with a strong reputation for high-quality sensors that are tested to factory standards.
- Standard Ignition (SMP): A trusted aftermarket name for decades. Choose their standard line (often in a red box). Avoid the budget "T-Series" line if possible, as quality can be inconsistent.
Standard & Value Brands ($20 - $40)
These brands offer a great balance of quality, price, and performance. They are a reliable choice for most daily drivers.
- Walker Products: Well-regarded for engine management and fuel system parts, offering good fit and function at a fair price.
- Holstein: Often considered a solid budget-friendly option that performs well. Forum users have reported good experiences with their sensors.
Economy Brands ($13 - $25)
These brands meet basic needs and are the most affordable. They can be a good choice if budget is the primary concern, but their long-term durability may not match higher-tier brands.
- Crown Automotive
- Global Parts
- Skyward
- True Tech
Pro Tip: Buy the Input and Output Sensors Together
Since both sensors are in the same area and are relatively inexpensive, consider replacing them as a pair. Some brands sell them in a set. This can save you from having to do the job twice if the other sensor fails soon after.
Frequently Asked Questions (FAQ)
Can I replace the vehicle speed sensor myself?
Yes, replacing the output speed sensor is a straightforward job for a DIY mechanic. It typically requires removing the air filter box for access, disconnecting a wire, and unscrewing the sensor with a 1-inch socket. The input sensor is more difficult to reach. The job should take less than an hour.
What happens if I don't replace a bad speed sensor?
Continuing to drive with a bad speed sensor can cause damage to your transmission over time due to harsh shifting. You will also have no working speedometer, which is unsafe and could lead to a traffic ticket. Your fuel economy may also decrease.
Is there a recall for the Chrysler Cirrus speed sensor?
No, there have been no recalls issued by Chrysler or NHTSA for the vehicle speed sensor on the 1995-2005 Cirrus.
I replaced the sensor but it's still not working. What now?
First, double-check that you replaced the correct sensor (input vs. output). Second, inspect the wiring and connector for damage or corrosion. If both the sensor and wiring are good, the issue could be with the instrument cluster or the powertrain control module (PCM), but this is much less common.
Technical Specifications
OEM Part Numbers: 4800879 4800878 04800879 04800878AB
The 1995-2005 Chrysler Cirrus uses two distinct sensors on its automatic transmission: an input speed sensor and an output speed sensor. The output sensor is a screw-in type sensor with an O-ring seal and a 2-pin electrical connector. It requires a 1-inch socket for removal and installation.
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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.
- Chrysler Cirrus:
- 🛍️ Shop This Part
- Understanding Your Cirrus Speed Sensors: Input vs. Output
- Common Symptoms of a Failing Speed Sensor
- A Known Problem: Check the Connector First
- Choosing the Right Aftermarket Speed Sensor
- Premium Aftermarket Brands ($40 - $67)
- Standard & Value Brands ($20 - $40)
- Economy Brands ($13 - $25)
- Pro Tip: Buy the Input and Output Sensors Together
- Frequently Asked Questions (FAQ)
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