Yep, it could be the water pump or maybe the alternator. If a bearing is starting to go bad on that alternartor, it will make noise. Usually if a water pump is going bad you'll notice moisture coming out of the weep hole; but only if the seal goes bad; the bearing can chirp or squeal; take the belt off the pump; does the noise stop? turn the pump by hand does it feel loose and gritty as you turn it? if it's ok it should feel stout with no gritty feeling.
No. A 1991 Plymouth Acclaim does not have an interference engine.
TRANSVERSE
Depends on the engine
It depends on the year model of the car and the engine that you have.
The oil filter is on the lower front of the engine.
Timing belt
Usually between the fuel tank and the engine. Ok, it is near the fuel tank, on the passenger side. I have a 1994 Plymouth Acclaim I hope it is in the same spot as yours.
It is under the housing where the upper radiator hose hooks to the engine.
Specific Fluid Quantities for a 1994 Plymouth Acclaim Fuel 60 litres Cooling System 2.5L Engine 8.5 Litres 3.0L Engine 9.0 Litres Engine Oil - Without filter 3.8 Litres with filter 4.3 Litres
The engine computer, behind the battery, is the voltage regulator.
It is screwed into the exhaust behind the engine.
The sensor is between the cab and engine. its in the back of the engine not the front like many other vechiles.