Yes. I believe there are six.
Can be many things, but considering you just changed the intake gasket, I would suspect you did it incorrectly or have knocked a vacuum hose loose somewhere. You have a vacuum leak somewhere.
You shouldn't need to take off the intake manifold at all so, to answer your question, no. However, if it the exhaust manifold you mean, the answer is still no. It should be a multi-layered metal gasket and the only reason to replace any gasket is because it is damaged.
The Intake gasket is leaking, NOT THE HEAD GASKET. Replace the intake gasket
Yes.
check your oil to see if you have coolant in it. if you do your intake gasket needs changed.
I just had my intake gasket changed on my 99 Monte Carlo for the same thing. My cousin is a mechanic and has changed the same gasket on several cars with the 3.1 engine. The gasket is about $60 - $75 plus labor.
The intake gasket is the gasket that conncects from your air filter into your intake manifold
The only fix for a bad intake gasket is to remove the intake manifold and replace the gasket.
It is common for the intake manifold gasket to leak antifreeze from the corners of the intake. Need to replace intake gasket. Be sure to look closely at the intake were the gasket seals against it for pitts in the intake. There is a heater hose that goes into the intake on right rear corner in the back, but uo on top of intake. check closely. It is common for the intake manifold gasket to leak antifreeze from the corners of the intake. Need to replace intake gasket. Be sure to look closely at the intake were the gasket seals against it for pitts in the intake. There is a heater hose that goes into the intake on right rear corner in the back, but uo on top of intake. check closely. It is common for the intake manifold gasket to leak antifreeze from the corners of the intake. Need to replace intake gasket. Be sure to look closely at the intake were the gasket seals against it for pitts in the intake. There is a heater hose that goes into the intake on right rear corner in the back, but uo on top of intake. check closely. It is common for the intake manifold gasket to leak antifreeze from the corners of the intake. Need to replace intake gasket. Be sure to look closely at the intake were the gasket seals against it for pitts in the intake. There is a heater hose that goes into the intake on right rear corner in the back, but uo on top of intake. check closely. It is common for the intake manifold gasket to leak antifreeze from the corners of the intake. Need to replace intake gasket. Be sure to look closely at the intake were the gasket seals against it for pitts in the intake. There is a heater hose that goes into the intake on right rear corner in the back, but uo on top of intake. check closely.
Get a Bigger Radiator
Yes, you must install a new intake manifold gasket.
NO. You MUST replace the intake gasket.