1990 Plymouth Acclaim AC Isn't Working

Common Causes of AC Failure in Your 1990 Plymouth Acclaim and How to Restore Comfort

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Reviewed by
Bo Fader
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 1990 Plymouth Acclaim 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 blown fuse could be causing the electrical issues in 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 non-functioning AC in a 1990 Plymouth Acclaim?

To effectively diagnose a non-functioning air conditioning system in a 1990 Plymouth Acclaim, start with a systematic approach that prioritizes simpler checks before delving into more complex issues. Begin by checking the refrigerant levels, as low refrigerant can significantly impact AC performance. If levels are low, inspect the system for any visible leaks, which may appear as oily residue around connections or hoses. Next, observe the compressor to ensure it engages when the AC is activated; a malfunctioning compressor can prevent cooling. Additionally, examine the condition of the AC belts, replacing any that show signs of wear or damage. It’s also crucial to test the electrical components, including fuses and relays, to confirm they are functioning properly. Lastly, verify that the cooling fans operate when the AC is turned on, as they play a vital role in dissipating heat from the condenser. By following these steps, you can effectively narrow down the potential issues affecting your AC system and take the necessary actions to restore its functionality.

What are the common problems that could cause the AC to stop working in a 1990 Plymouth Acclaim?

When the air conditioning system in a 1990 Plymouth Acclaim ceases to function, several common issues may be at play. One of the first things to check is the refrigerant level; low refrigerant can significantly hinder the system's ability to cool the air. If the refrigerant is adequate, the next step is to inspect the compressor, as a faulty compressor can prevent the system from circulating refrigerant properly. Additionally, blockages in the orifice tube or expansion valve can restrict refrigerant flow, leading to inadequate cooling. It's also essential to examine the refrigerant lines for any leaks, as these can cause a loss of refrigerant and diminish cooling performance. Electrical issues, such as blown fuses or faulty wiring, can disrupt the AC's operation, so checking these components is crucial. Lastly, a malfunctioning blower motor can impede the distribution of cool air into the cabin, making it another area to investigate. By systematically addressing these common problems, DIYers can effectively diagnose and potentially resolve AC issues in their Plymouth Acclaim.

How urgent is it to repair the non-functioning AC in a 1990 Plymouth Acclaim?

When it comes to repairing the non-functioning AC in your 1990 Plymouth Acclaim, urgency is key. A malfunctioning AC system can significantly impact your comfort during hot weather, making long drives unbearable and distracting you from the road. More critically, the absence of a functioning AC can pose safety risks, as extreme temperatures can lead to discomfort and health issues for both the driver and passengers. Additionally, neglecting AC repairs can diminish your vehicle's resale value, as potential buyers often look for well-maintained systems. Furthermore, delaying repairs can result in more extensive damage, leading to costly fixes down the line. Therefore, addressing AC issues promptly is not just a matter of comfort; it’s essential for ensuring safety, maintaining vehicle value, and preventing further complications.

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Common Issues with 1990 Plymouth Acclaim AC System