For the manifold see link below for detailed info on the class action settlement and detailed DIY instructions...
http://www.autoclinix.com/Manifold.htm
Is the intake cracked? Is it a 4.6L? If so, a recent class action settlement extends the warranty, on the intake, to 70,000 miles. Don't replace with OEM manifold.
No, not as standard.
alot
Intake manifold gaskets are leaking, intake manifold is warped.
No, not for the hose but, I have seen the metal bypass tube that the hose connects to, rust out and cause a coolant leak out the back of the engine. The intake manifold would have to be removed to replace that metal tube.
what is the cost to replace a 2001 v-8 manifold intake
Yes, you must install a new intake manifold gasket.
YES , a 1990 Mercury Grand Marquis 5.0 liter V8 engine has a PCV valve ( Motorcraft part number EV-98-B ) going into the intake manifold
mass air flow sensors are generally located in the air passage between the air filter and the intake manifold.
If you are talking about the coolant cross-over, on the intake, then the new modified one has to be installed. cost around $ 250.00 for the part, and 6 to 8 hours labor.
The Villager has an upper and lower intake manifold. It is at the top of the engine with the throttle body attached to it.
There are 2; one on each side of the intake manifold toward the front. See pics and description here... http://www.autoclinix.com/Manifold3.htm
replace the water heater inlet pipe on the intake manifold on a 3800