1999 Plymouth Neon Is Leaking Oil

Discovering the Causes of Oil Leaks in Your 1999 Plymouth Neon and How to Fix Them Effectively

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
80% chance it's the
Oil System Components
0%
20% chance it's the
Engine Gaskets
The most common reasons a 1999 Plymouth Neon is leaking oil are oil system component failure and leaking engine gaskets.
  • Oil System Components: A worn or damaged oil pump or filter can lead to low oil pressure, resulting in inadequate lubrication and potential engine damage.
  • Engine Gaskets: A worn or damaged engine gasket can lead to oil or coolant leaks, resulting in engine overheating or loss of lubrication.
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 1999 Plymouth Neon is leaking oil?

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.

Oil pans don't wear out or break like other parts, they generally only need to be replaced because of external damage from an accident or an improperly tightened drain plug. The main symptom you will experience is an oil leak underneath the engine of your car. The oil that leaks from a damaged oil pan will range from dark brown to dark black. If the leak is large enough or occurs for long enough the oil level will be low enough to turn the oil pressure or low oil level warning light on.

An oil leak may be noted on the ground where the vehicle is parked. However, many vehicles have plastic trays underneath the engine that may catch leaking oil and conceal the leak. In such cases, a low oil level, a burning oil smell, or even smoke from oil burning in the engine bay may be noted.

»MORE: Signs of a bad oil pan gasket

The engine oil pressure warning light will come on if the engine oil pressure is low, or if the oil pressure sensor is faulty. In either case, engine power may be reduced significantly. The check engine light may also illuminate, and an on-board diagnostic (OBD) trouble code will be stored in the vehicle's computer.

What are the initial steps to diagnose the oil leak in a 1999 Plymouth Neon?

When diagnosing an oil leak in your 1999 Plymouth Neon, it's essential to adopt a systematic diagnostic approach that prioritizes simplicity and effectiveness. Begin by locating the leak; inspect the area beneath your vehicle for any visible oil spots or puddles, as this can provide immediate clues about the leak's origin. Next, turn your attention to the engine itself, looking for oil stains on critical components like the valve cover, oil pan, and oil filter, which can help narrow down the source. It's also crucial to check the oil level in the engine; a significant drop may indicate a serious leak that requires prompt attention. Pay special attention to the oil filter and drain plug, ensuring they are secure and free from leaks, as these are common culprits. Additionally, inspect the gaskets and seals around the engine for signs of wear or damage, as faulty seals can lead to oil escaping. If the source remains elusive, consider performing a pressure test to identify leaks within the oil system. By following this structured approach, you can effectively diagnose the oil leak and take the necessary steps to address it.

What are the common causes of oil leaks in a 1999 Plymouth Neon?

When dealing with oil leaks in a 1999 Plymouth Neon, it's essential to understand the common culprits that could be causing the problem. One of the primary issues is a worn or damaged oil pan gasket, which can deteriorate over time and lead to significant leaks. Additionally, a faulty or improperly installed oil filter can also result in oil escaping, so it's crucial to ensure that the filter is correctly fitted and in good condition. Another frequent source of leaks is the valve cover gasket, which can wear out and allow oil to seep from the top of the engine. Furthermore, pay attention to the oil drain plug; if it is loose or damaged, it can create a pathway for oil to leak from the oil pan. Lastly, leaks from the engine oil cooler can also contribute to oil loss. Addressing these issues promptly is vital to prevent further engine damage, and regular maintenance checks can help you catch these problems early, ensuring your vehicle runs smoothly.

How urgent is it to address the oil leak in my 1999 Plymouth Neon?

When it comes to your 1999 Plymouth Neon, the urgency of addressing an oil leak cannot be overstated. An oil leak not only compromises the engine's lubrication, leading to potential overheating and severe engine damage, but it also poses significant safety risks. As oil levels drop, the likelihood of engine failure increases, which can result in costly repairs that could have been avoided with timely intervention. Moreover, oil leaks can create hazardous driving conditions, as spilled oil can make roads slippery, endangering both you and other drivers. Additionally, the environmental impact of leaking oil is a serious concern, as it can contaminate soil and water sources. Therefore, it is crucial to act swiftly to repair any oil leaks in your vehicle, ensuring both its optimal performance and the safety of the environment and road users.

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