Your erg valve is installed upside down and backwards. The same thing happend to me.
You need to replace the manifold and use Felpro Gaskets.
Under hood, center, rear engine area, mounted in exhaust manifold
It cost us about $700 cnd. That was a shop that charged about $75/hr.
On a 1999 Oldsmobile Silhouette, the starter is located on the driver's side of the engine, near the transmission. It is positioned towards the rear of the engine block, beneath the intake manifold. To access it, you may need to remove some components or shields in the area for better visibility and space.
Intake manifold gasket leak....big problem with that engine. Sorry for the bad news.
Intake manifold gasket seems to go on every single van, anywhere between 60k and 150k. This van has a host of cooling/transmission issues.
What are the intake manifold torque specs on 1998 Oldsmobile bravada?"
The idle air control valve (IAC) on a 1995 Oldsmobile Silhouette is typically located on the throttle body, which is situated on the intake manifold. It is usually mounted on the side of the throttle body and can be identified by its electrical connector and the air passages leading to it. Accessing it may require removing the air intake duct for better visibility and space to work.
The EGR (Exhaust Gas Recirculation) valve on an Oldsmobile Silhouette is typically located on the engine, often near the intake manifold. To find it, look for a metal or plastic component connected to a vacuum line and electrical connector. The exact location may vary depending on the specific engine model and year, so it's best to consult the vehicle's service manual for precise details.
The head gasket on an Oldsmobile Silhouette is located between the engine block and the cylinder head. It serves as a seal to contain the combustion process and maintain coolant and oil separation. To access the head gasket, you typically need to remove the intake manifold and other components, depending on the engine configuration. Always consult the vehicle's service manual for specific instructions and precautions during the replacement process.
Auto Zone says it's located on the driver's side intake manifold. I've not found it yet on my 95. Maybe you will have better luck!, if so post a response please.
The head gasket on a 1997 Oldsmobile Silhouette is located between the engine block and the cylinder head. Its primary function is to seal the combustion chambers and prevent coolant and engine oil from mixing. To access the head gasket, the intake manifold and cylinder head must be removed, which can be a complex process. It's essential to ensure the engine is cool and properly supported before attempting any repairs in this area.