A/C Compressor Cut-Off Switch Guide for the 1990-1992 Eagle Summit
If your Summit's air conditioning has stopped working, this small safety switch is a common and affordable part to check.
- The part for the 1990-1992 Eagle Summit is a low-pressure cut-off switch.
- Failure symptoms include warm air or an A/C compressor that won't turn on.
- New aftermarket parts from brands like Global Parts are the only available option; OEM parts are discontinued.
- Replacement is simple, but requires a professionally evacuated A/C system to be done legally and safely.
Is Your Eagle Summit's A/C Blowing Warm?
When the air conditioning in an older car like the 1990-1992 Eagle Summit stops blowing cold, the problem can often be a small, inexpensive sensor. The A/C compressor cut-off switch is designed to protect the most expensive part of your A/C system—the compressor. When this switch fails, it can mistakenly prevent the compressor from turning on, leaving you with warm air from the vents even if the rest of the system is fine.
Symptoms of a Bad A/C Cut-Off Switch
- A/C Blows Warm or Hot Air: This is the most common sign. The switch is failing to send power to the compressor, so the cooling cycle never starts.
- Compressor Clutch Does Not Engage: When you turn on the A/C, you should hear a “click” from the engine bay as the compressor clutch engages. If you hear nothing and the center of the compressor pulley isn't spinning, the cut-off switch may be the cause.
- Intermittent Cooling: The A/C might work sometimes but not others. This can happen if the switch is failing and sending erratic signals.
Choosing the Right Aftermarket Part
For a vehicle like the 1990-1992 Eagle Summit, new original equipment (OEM) parts from Eagle or Mopar are no longer manufactured. The only option is a new aftermarket part.
Global Parts (GPD): This is the primary brand available for this specific switch. GPD is a common supplier of aftermarket A/C components. While not a premium performance brand, it is designed to meet the original fit and function for your Summit's A/C system. For a simple electronic switch like this, an aftermarket part from a known A/C supplier like GPD is a reliable and cost-effective choice.
Cost Comparison
| Part Type | Price Range |
|---|---|
| New Aftermarket (Global Parts) | $9.01 |
| New OEM | Not Available |
| Used OEM | Not Recommended |
| Shop Labor | $50 - $100 |
A Note on Refrigerant
Your 1990-1992 Eagle Summit was originally built to use R-12 refrigerant. This type is no longer available for public use. Most vehicles of this age have either been converted to the newer R-134a standard or have non-functional A/C systems. Before working on any A/C components, you must confirm which type of refrigerant is in the system.
Frequently Asked Questions (FAQ)
What exactly does the A/C cut-off switch do?
It's a safety switch. It monitors the pressure of the refrigerant in the A/C lines. If the pressure is too low (from a leak), it cuts power to the compressor to prevent it from destroying itself while running without proper lubrication.
Is replacing the A/C cut-off switch a DIY job?
Replacing the switch itself is very easy—it just unscrews. However, doing so will open the A/C system and release any refrigerant into the atmosphere, which is illegal and harmful. This job should only be done if the A/C system is already completely empty. If the system is charged, it must be professionally evacuated before replacing the switch and then recharged afterward.
I replaced the switch, but my A/C still blows warm. What now?
If the new switch didn't solve the problem, it means the switch was likely doing its job correctly. Your A/C system is probably low on refrigerant due to a leak somewhere else in the system. The leak must be found and repaired before the system will hold a charge and cool properly.
Are there any recalls for this part?
No. There are no recalls or Technical Service Bulletins (TSBs) from Eagle or the NHTSA related to the A/C compressor cut-off switch for the 1990-1992 Eagle Summit.
Technical Specifications
A/C Compressor Low Pressure Cut-out Switch; 2 Prong.
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.
- Eagle Summit: