Chrysler Concorde A/C Compressor Cut-Off Switch Guide (1993-1996)
Is your Concorde's A/C blowing warm air or not working at all? A small, easy-to-replace switch could be the problem.
- A faulty A/C cut-off switch is a common reason for the A/C to blow warm air in a 1993-1996 Concorde.
- Symptoms include intermittent cooling, warm air, or the compressor not turning on at all.
- This is an easy and inexpensive DIY repair; the A/C system does not need to be drained.
- For this vehicle, an aftermarket switch from a brand like Global Parts is a perfectly acceptable and cost-effective repair solution.
Symptoms of a Failing A/C Cut-Off Switch on a 1993-1996 Concorde
When the A/C pressure switch on your Concorde starts to fail, it can cause several noticeable problems. Because the switch's job is to control the compressor, the symptoms often look like the compressor itself has failed. Look out for these common signs:
- A/C Blows Warm Air: This is the most common symptom. The switch may incorrectly detect a pressure issue and prevent the compressor from turning on, so you only get warm air from the vents.
- Intermittent Cooling: The A/C might work for a few minutes and then suddenly cut out, or it may only work on some drives but not others. This happens when the switch is sending erratic signals.
- Compressor Clutch Doesn't Engage: When you turn on your A/C, you should hear a distinct "click" from the engine bay as the compressor clutch engages. If you don't hear this click and the center part of the compressor pulley isn't spinning, the cut-off switch may be preventing it from getting power.
- Rapid Clicking Noises: You might hear the A/C compressor clutch clicking on and off very quickly. This can indicate the switch is rapidly cycling the compressor due to faulty pressure readings.
Official Bulletins for This Vehicle
As of early 2026, there are no active recalls or specific Technical Service Bulletins (TSBs) from Chrysler for the A/C compressor cut-off switch on the 1993-1996 Concorde. However, general owner complaints for this vehicle generation do include the A/C system suddenly stopping. This is often traced back to a component like the pressure switch, a refrigerant leak, or the compressor itself.
Choosing a New Aftermarket A/C Switch
For a vehicle like the 1993-1996 Concorde, finding original OEM Mopar parts can be difficult and expensive. Aftermarket parts are a practical and affordable solution, especially for a simple component like a pressure switch.
Brand Focus: Global Parts Distributors (GPD)
Global Parts is a common aftermarket brand that produces a wide range of A/C components. For a straightforward electrical switch, their products are a cost-effective choice. While reviews for more complex parts like compressors can be mixed, a simple switch is a low-risk component that generally meets OEM specifications for fit and function. For an older vehicle, an aftermarket switch from a brand like Global Parts provides a reliable repair without the high cost of trying to source a likely discontinued OEM part.
Is DIY Replacement Possible?
Yes, for most owners with basic tools. On these Chrysler platforms, the A/C pressure switch is usually located on a service port on one of the A/C lines in the engine bay. This port has a Schrader valve, similar to a tire valve. This means you can unscrew the old switch and install the new one without losing refrigerant or needing to evacuate the A/C system. The job typically requires only a small wrench and can be done in under 30 minutes.
Estimated Part & Labor Costs
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket (Global Parts) | $9.01 |
| New OEM (Mopar) | $90 - $150+ (Likely discontinued) |
| Shop Labor | $75 - $150 |
Frequently Asked Questions
Can a bad A/C switch damage my compressor?
No, it's the other way around. The switch is designed to protect the compressor. If the switch fails, it will typically just prevent the compressor from turning on. Driving with a faulty switch is not dangerous, but your A/C will not work.
Do I need to drain the refrigerant to replace this switch?
No. On the 1993-1996 Concorde, the switch is mounted on a service port with a Schrader valve. This valve seals the system when the switch is removed, so you will not lose any refrigerant.
Where is the A/C cut-off switch located on my Concorde?
Follow the aluminum A/C lines in your engine bay. You will find one or two pressure switches threaded onto the lines. On similar Chrysler vehicles of this era, one is often located in the front-right corner of the engine bay.
My A/C is blowing warm. Is it definitely the switch?
Not necessarily. The most common cause of warm A/C is a low refrigerant level from a leak. A bad switch causes the same symptom because it tells the compressor not to run. Before replacing the switch, it's wise to have the system pressure checked to rule out a leak.
Technical Specifications
OEM Part Numbers: 4677100
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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 Concorde: