Replace if failed.
next to the tps
is it on the side of the intake
On the valve cover
Finding the intake manifold runner control on a Dodge Avenger is easy. It is located near the engine.
yes heads need to be removed
A 1999 Dodge Ram does not have a water control valve.
Yes, you remove the rockers, add air pressure in the cylinder through the plug hole and use a valve spring compressor to remove valve spring. You can now change the valve seal.
A 1998 Dodge Ram does not have EGR.
If a 1999 Dodge Intrepid timing chain goes out a valve in the head can easily be damaged.
Usually you replace the egr valve.
I replace the heads with first starting by draining the coolant then removing the exhaust as neccasary then the intake manifold and distributor then the valve rocker arms and pushrods then unbolting the heads.