Ram ProMaster City Has A Coolant Leak

Diagnosing Coolant Leak Issues in Your Ram ProMaster City and Effective Repair Strategies

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Reviewed by
Devin Cabugcal
Written by RepairPal Car Genius
Updated January 14, 2025
0%
50% chance it's the
Loose Hose Connections
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25% chance it's the
Radiator
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25% chance it's the
Water Pump
The most common reasons a Ram ProMaster City 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 Ram ProMaster City 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 Ram ProMaster City

When troubleshooting coolant leaks in your Ram ProMaster City, begin by visually inspecting the engine bay for any obvious signs of leakage, such as puddles or wet spots around hoses, the radiator, and the water pump. Pay close attention to hose connections, as loose fittings are often the simplest culprits. Next, monitor your coolant levels by marking the reservoir and checking for any significant drops after driving; this can help pinpoint the severity of the leak. If the leak persists and is not easily identifiable, consult a Dodge Workshop Manual for detailed guidance on your specific model, which can provide insights into more complex issues. Addressing even minor leaks promptly is crucial to prevent overheating and potential engine damage, so ensure that any replacement parts you consider are compatible with your vehicle. By following this diagnostic approach, you can effectively manage coolant leaks and maintain the reliability of your Ram ProMaster City.

How to Diagnose and Fix Coolant Leaks in a Ram ProMaster City?

When diagnosing and fixing coolant leaks in a Ram ProMaster City, it's crucial to be aware of the common problems that can affect the cooling system. One prevalent issue is the wear and tear of hoses and connections, which can develop cracks and leaks over time due to heat exposure and age. The radiator is another component that may suffer from corrosion or physical damage, leading to coolant escaping from the system. Additionally, a failing water pump can contribute to leaks if its seals deteriorate. It's also important to consider potential leaks from the engine block or head gasket, especially in older vehicles or those with higher mileage. By understanding these common failure modes, you can better monitor your vehicle for signs of coolant loss and take timely action to address any issues, ultimately ensuring the reliability and longevity of your Ram ProMaster City.

How to Address a Coolant Leak in a Ram ProMaster City?

Addressing a coolant leak in your Ram ProMaster City is crucial, as neglecting this issue can lead to severe engine damage and costly repairs. Coolant leaks can escalate quickly, resulting in overheating, which may compromise engine integrity and performance. If you notice symptoms such as coolant pooling under the vehicle or a drop in the coolant reservoir level, it’s essential to act promptly. Ignoring these signs can not only affect your vehicle's efficiency but also pose safety risks while driving. By identifying the source of the leak early—whether it’s a loose hose, a damaged radiator, or a failing water pump—you can mitigate potential damage and ensure your vehicle remains in optimal condition. Remember, if the problem persists or you’re unable to pinpoint the leak, seeking professional assistance is a wise choice to safeguard your investment and ensure your safety on the road.

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