1997 3.3 v6 voyager, whistling noise when engine running,turn engine off whistling fades away after a few seconds

What you heard was probaly the drive belt, if it stopped after a few seconds, take a glss of water and pour on belt while running and see if it does it while pouring the water, this also works to tell if you have a bad belt or idler pulleys, if the squealing goes away its a belt if it keeps squealing its the idler. If its an actual whistle, before it starts, who knows......

Possible restriction in exhaust have convertor checked for blockage

Your ignition switch is going bad. The strange noise is the starter remaining engaged and locked to the flywheel. Your best bet is to have the starter tested at your local auto parts store, to deduce that it is not, in fact, your starter.

Have you checked the tension on the alternator or any other belt drive in the engine bay?

As the engine light came on there should be a fault code stored in the memory that should provide a clue.

When searching for whistles and other noises listening through a piece of hose can be a helpful way to pinpointing the source.

According with the Voyager Repair Manual, check this information for each engine:

Model: VOYAGER
Year: 1997
Engine: V6 - 3.3L - FI - - GAS
Parts Number: RN14MC5
GAP : .050"


Model: VOYAGER
Year: 1997
Engine: V6 - 3.0L - FI - - GAS
Part Numbere: RN11YC4
GAP : .044" (Original Equipment Manufacturer and/or Original Equipment Equivalent)


Model: VOYAGER
Year: 1997
Engine: L4 - 2.4L - FI - - GAS
Part Number: RC12YC5
GAP : .050" w/DOHC (Original Equipment Manufacturer and/or Original Equipment Equivalent)


Hope this helps (remember to rating this free answer).

remove the serpentine belt, then start the engine and listen for the noise. if the noise is gone. then you have a accessory going bad. ( i.e. ac compressor, water pump, belt tensioner, idler pulley...etc..)

It means that the pre heat is in operation.It is a system that burns diesel to create heat to warm up engine quicker so that warm air comes into car sooner.The smoke is the exhaust gasses from the system and normally the whistleing and smoke stops when engine reaches running temperature or on short journeys approx 1 minute after engine is turned off
During summer when no heat is required and air con is on cooling it should not light even when starting from cold

hope this helps

bearing in the a-c ,sounds like it needs a new 1 .not a easy fix

check pawer steering pump belt mybe it is worn out or loose, also check the alteranator belt.