The 3.1 L engine of Chevrolet Malibu may experience trouble with coolant leaks. The source of the problems is the intake manifold gasket. The original equipment gasket may not seal the mating points of the intake manifold and the cylinder head.
Two types of leaks occur whenever the intake manifold gasket fails. An internal leak occurs when the coolant mixes with oil. The oil will appear to milky white in color. A second type of leak is the external leak. Coolant will stream on the side of the engine block and on the ground under the car.
The engine undergoes a heating and cooling cycle. After a set number of heating and cooling cycles the gasket will not assure the proper mating of the intake manifold and the cylinder head. When the mating parts are misaligned, an internal or external leak will occur.
The 1999-2003 Chevrolet Malibu uses General Motors's extended life coolant called Dex-Cool. This coolant product is orange in color. Dex-Cool corrodes the intake manifold gasket from the inside. The plastic material around the coolant manifold port breaks down and, as a result of this wear, a leak may appear.
Cadillac Northstar Engine Problems
Built as an answer to Ford's 4.6-liter modular engine, introduced the same year and carrying the same displacement, the greatest of Caddy's...
Coolant Leak in a Chevrolet 4.3
The 4.3-liter V-6 engine is used in several Chevrolet vehicles through the 1990s and early 2000s, such as the S10, Silverado, C-Series...
How to Troubleshoot Leaking Oil
Contrary to popular belief, cars do not use up engine oil. If your car is consistently low on oil, you either have...
How to Replace an Intake Gasket on a Chevy Malibu
An intake manifold operates to distribute the air and fuel mixture provided by the engine's carburetor to each of the engine's cylinders...
How to Add Coolant to a Chevrolet Malibu
Topping off your Chevy Malibu with Dex-Cool radiator fluid keeps your engine from overheating. Dex-Cool is the only recommended brand of fluid...
How to Change the Thermostat in a 2006 Chevy Malibu
The thermostat in the 2006 Chevy Malibu regulates the engine temperature by allowing or restricting the flow of fluid that goes through...
How to Drain Antifreeze From a 2001 Malibu
The engine in your 2001 Chevy Malibu can become quite hot during operation. That's where your Malibu's radiator comes in. The water...
Reasons for Antifreeze Leak in a 2003 Chevy Silverado
General Motors vehicles such as the 2003 Chevy Silverado use DEX-COOL antifreeze, specification number GM6277M. Since the antifreeze in your vehicle is...
Chevy 3.5 Specs
Chevy introduced two new engines in 2004, the 3.5-liter V-6 and 3.5-liter I-5. These two engines were the replacements for several older...