Plymouth Prowler Has A Coolant Leak

Diagnosing Coolant Leak Issues in Your Plymouth Prowler and Effective Repair Strategies

Find Repair Location
Reviewed by
Devin Cabugcal
Written by RepairPal Car Genius
Updated January 14, 2025
0%
50% chance it's the
Loose Hose Connections
0%
25% chance it's the
Radiator
0%
25% chance it's the
Water Pump
The most common reasons a Plymouth Prowler has a coolant leak are loose hose connections, a broken radiator, or a failed water pump.
  • Loose Hose Connections: A loose hose connection can lead to vacuum leaks or fluid loss, resulting in poor engine performance or overheating.
  • Radiator: A damaged or clogged radiator can impede coolant flow, resulting in engine overheating and reduced cooling efficiency.
  • Water Pump: A failing water pump can lead to coolant leaks or overheating due to inadequate circulation of coolant in the engine.
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.

How much does it cost to fix a Plymouth Prowler has a coolant leak?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

When the head gasket begins to fail, the engine may have no symptoms at all. They only begin to occur when the leak has reached an engine oil passage, engine coolant passage or the engine cylinder.

When that happens, the engine may be very difficult to start, and run roughly when idling. There may be oil or coolant leaking, and the engine may begin to overheat, or at least run hot. At this point, there may be coolant in the engine oil pan — this will look creamy and lighter in color than the oil. Also, the radiator or engine coolant reservoir may have a gurgling sound, the presence engine oil, or smell of combustion. And the check engine light will come on.

The coolant being burned in the engine will produce white exhaust that smells sweet, like engine coolant. When the head gasket fails completely, the engine will overheat within minutes of starting, will stall and then won't restart.

A failing heater core may cause the car's interior to smell like engine coolant. The smell will become worse when the heater is turned on. The engine may also begin to run hotter until the vehicle is repaired.

The worst-case scenario is the engine overheating, which can cause extensive engine damage.

If the heater core is clogged, the air that blows when the heater is turned on will not be very hot.

Problems with the intake manifold gasket can create the following symptoms:

  • Illuminated check engine light
  • Erratic engine performance
  • Oil and coolant leaks
  • Poor gas mileage
  • Stalling

» LEARN MORE: Intake manifold gasket symptoms

A failing radiator can cause the engine to run hot or overheat. Most radiators are made of metal and plastic. The plastic parts can become brittle and crack over time, causing a leak of coolant (typically green or pink in color). All manufacturers have a recommended service interval for coolant renewal. As the coolant ages, the additives breakdown and being to form solid deposits. These deposits will build up in the passages of the cooling system and will eventually clog components, including the radiator. A leaking or clogged radiator must be replaced. Some automatic transmission cars will also have a transmission cooler integrated into the radiator. Lines going to and from the transmission circulate transmission fluid to help cool the transmission in heavy duty applications such as towing or off-roading. If this integrated cooler fails, it can allow transmission fluid and coolant to mix. This will causing shifting issues in addition to overheating.

A coolant leak may be noted from the hoses. Coolant hoses can be damaged by oil leaks, or age. This will lead to swelling or cracking, it is suggested to replace the hoses before they begin leaking to avoid potential overheating.

The bad thermostat can cause two different sets of problems, depending on whether it's stuck open or stuck closed.

A thermostat that is stuck open can cause the engine to run colder than normal and turn on the check engine light. It may also cause poor fuel mileage and the heater to blow cool air.

A thermostat that is stuck closed will cause the vehicle to overheat. If a new thermostat doesn't resolve engine temperature problems, the cooling system needs to be checked for other issues.

» LEARN MORE: Signs of a bad thermostat, and how to fix it

If a vehicle is overheating, a bad thermostat could be the problem, and a damaged thermostat housing is more likely to produce a coolant leak, either from a cracked or warped housing or a failed seal to the engine. The thermostat housing can be made of metal or plastic. And the housing can be a stand-alone part that is separate from the thermostat, or (on later model vehicles) can be integrated with the thermostat and replaced as a single unit.

The two most common signs of a bad pump are leaks and noises.

Leaking water pumps can result in damage to the drive and timing belts, and cause the engine to overheat. A failed water pump can be caused by other problems in the cooling system, such as a bad thermostat, radiator or head gasket.

Troubleshooting Coolant Leaks in a Plymouth Prowler

When troubleshooting coolant leaks in your Plymouth Prowler, begin by inspecting the most common culprits, such as radiator hoses and clamps. Look for any visible signs of wear or damage, as these components are often the first to fail. If the hoses appear intact, check the water pump for leaks, as a malfunctioning pump can lead to significant coolant loss. Next, examine the thermostat housing and intake manifold gasket, as these areas can also develop leaks over time. If you suspect a more serious issue, such as a blown head gasket, consider using a vacuum test to identify air leaks in the system. This method can help pinpoint the source of the leak without extensive disassembly. Regular inspections, especially after maintenance tasks, are crucial to catch potential issues early. By following this diagnostic approach, you can effectively address coolant leaks and maintain the performance of your Plymouth Prowler.

How to Diagnose and Repair Coolant Leaks in a Plymouth Prowler?

When tackling coolant leaks in a Plymouth Prowler, understanding common problems associated with the cooling system is crucial for effective diagnosis and repair. One frequent issue is the deterioration of hoses and connections, which can lead to cracks or looseness, resulting in leaks. Additionally, the radiator is often a culprit; corrosion or physical damage can create openings for coolant to escape. The water pump is another vital component that may develop leaks, particularly around the gasket or weep hole, necessitating careful inspection. Furthermore, the heater core can leak, manifesting as coolant inside the cabin or fogging on the windshield, indicating a need for replacement. Lastly, a failing head gasket can allow coolant to enter the combustion chamber, which can be diagnosed through a compression test. By being aware of these common problems, DIY enthusiasts can more effectively identify the source of coolant leaks and take appropriate action to maintain their vehicle's cooling system.

How to Address a Coolant Leak in a Plymouth Prowler?

When dealing with a coolant leak in your Plymouth Prowler, it is crucial to act swiftly to avoid severe engine damage and costly repairs. Ignoring signs of a leak, such as fluid puddles or fluctuating temperature gauges, can lead to overheating and significant engine failure. Common culprits of coolant leaks include worn hoses, a faulty water pump, or a damaged radiator, all of which require immediate attention. By identifying the source of the leak early, you can implement temporary fixes or seek professional help, ensuring your vehicle remains in optimal condition. Additionally, regular maintenance checks can prevent future leaks, safeguarding your engine's health. Remember, prioritizing safety and addressing coolant issues promptly not only protects your investment but also enhances 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.

Plymouth Prowler Coolant Leak Causes & Repairs | RepairPal