What causes antifreeze to leak from the intake manifold?
The intake manifold gaskets are the most likely cause of your antifreeze leaking and engine oil getting low. Location #1 in the picture below is on the passenger side front of the engine behind the front timing cover. Location #2 is a little harder to see.
Where is the coolant leak on a V6?
Location #1 in the picture below is on the passenger side front of the engine behind the front timing cover. Location #2 is a little harder to see. It is below the throttle body and next to the coolant temperature sensor and thermostat outlet housing on the drivers side.
Where does coolant leak on a Oldsmobile?
1. Behind the power steering pump, leaks down where intake meets cylinder head. 2. Near coolant temp. sensor, and around lower intake bolt. Note: throttlebody and exhaust crossover removed for easier viewing.
Why is coolant leaking from my GM 3.1L engine?
One of the most common problems on the GM 3.1L and 3.4L V6 engines is coolant leaking from the intake manifold gaskets. This problem has been a gold mine for GM and the auto repair industry.
What causes a Pontiac 3400 engine to leak?
The intake manifold gasket failed on many 3.4 L engines and caused either an internal or external leak. An internal leak will allow the oil and the coolant to mix together. An external leak allows the coolant to leak outside of the engine. The leaks occur around the intake manifold gasket. The failures are linked to DexCool, GM’s long-life coolant.
The intake manifold gaskets are the most likely cause of your antifreeze leaking and engine oil getting low. Location #1 in the picture below is on the passenger side front of the engine behind the front timing cover. Location #2 is a little harder to see.
Location #1 in the picture below is on the passenger side front of the engine behind the front timing cover. Location #2 is a little harder to see. It is below the throttle body and next to the coolant temperature sensor and thermostat outlet housing on the drivers side.
What kind of engine does a Pontiac Montana have?
General Motors deployed the 3.4 liter engine in many of its U.S. built cars. Cars in the Pontiac line that used the 3.4L engine included the Pontiac Montana, Aztec, and Grand Am. Owners of Pontiacs with these engines reported on websites such as Car Complaints.com that they experienced coolant leaks and overheating problems with these engines.