1992 Subaru Loyale AC Isn't Working

Common Causes of AC Failure in Your 1992 Subaru Loyale and How to Restore Cool Airflow

Find Repair Location
Reviewed by
Devin Cabugcal
Written by RepairPal Car Genius
Updated January 14, 2025
0%
37% chance it's the
Refrigerant Leak
0%
21% chance it's the
Climate Control Electrical Issue
0%
12% chance it's the
AC Compressor
0%
30% chance it's
Something else
The most common reasons a 1992 Subaru Loyale AC isn't working are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor.
  • Refrigerant Leak: A refrigerant leak can occur due to damaged hoses, seals, or connections, resulting in decreased cooling efficiency in the air conditioning system.
  • Climate Control Electrical Issue: A faulty climate control module or a short circuit in the wiring can disrupt the electrical signals needed for proper operation of the climate control system.
  • AC Compressor: A faulty AC compressor may be due to a lack of lubrication, electrical issues, or internal mechanical failure, resulting in inadequate cooling performance.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

What are the initial steps to diagnose the AC issue in a 1992 Subaru Loyale?

To effectively diagnose the AC issue in your 1992 Subaru Loyale, begin by performing a basic assessment of the system's performance. Start by checking the air conditioning switch to ensure it is functioning correctly, as a faulty switch can prevent the system from operating. Next, inspect the air door position sensor and the compressor speed sensor, as these components play crucial roles in regulating airflow and compressor operation. If these initial checks do not reveal any issues, consider examining the refrigerant levels for potential leaks, which are common culprits in AC failures. Additionally, verify the functionality of the accessory power relay and the A/C condenser fan motor relay, as these can impact the overall performance of the AC system. If you suspect that the expansion valve may be causing over-pressure and poor cooling, it may need to be replaced. Throughout this process, monitor the system for signs of high pressure and compressor cycling at idle, as these indicators can help pinpoint the problem. By following this structured approach, you can systematically identify and address the AC issues in your Subaru Loyale, making the repair process more manageable and efficient.

What are the common problems that could cause the AC to stop working in a 1992 Subaru Loyale?

When dealing with a malfunctioning air conditioning system in a 1992 Subaru Loyale, it's essential to understand the common problems that could be at play. One of the primary issues is a refrigerant leak, which can occur gradually and may not be immediately apparent until the AC fails to produce cold air. This type of leak can often be traced to worn seals or connections within the system. Additionally, electrical climate control issues can disrupt the operation of the AC, potentially stemming from faulty wiring or a malfunctioning control module. Lastly, the air conditioning compressor itself may be the source of the problem; if the compressor is not engaging properly, it can prevent the system from circulating refrigerant effectively. By identifying these common failure modes, DIYers can take the necessary steps to diagnose and potentially resolve the AC issues in their Subaru Loyale.

How urgent is it to address the non-functioning AC in a 1992 Subaru Loyale?

Addressing the non-functioning AC in a 1992 Subaru Loyale is crucial for several reasons. First and foremost, driving without a functioning air conditioning system can lead to significant discomfort, especially during hot weather, which can distract the driver and compromise safety. Additionally, neglecting AC issues can exacerbate the problem, potentially leading to more severe mechanical failures that require costly repairs. A malfunctioning AC may also indicate underlying issues such as refrigerant leaks or compressor failures, which, if left unaddressed, could result in further damage to the vehicle's systems. Timely repairs not only enhance passenger comfort but also ensure the longevity and reliability of the vehicle, ultimately preserving its value. Therefore, it is essential to prioritize the repair of a non-functioning AC to maintain both the comfort and safety of your driving experience.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.

Troubleshooting 1992 Subaru Loyale AC Issues | RepairPal