Motor noise in 2006 Town & Country 3.8 l

rough idle symptom of misfire --need to diagnose if plug wires/coil failing injector etc ---noise can be anything from debris to failing suspension part need to jack up and inspect

unlikely -- unless it is a diesel engine ( engine type not mentioned)
check for faulty hydraulic lifter or worn rocker bushes or shaft
have a compression test done to check for loose valve seat insert.

Can you tell that the fan is getting higher or lower? Or is there no response from the fan control until you get to the high position?

sounds like something fallen into blower fan squirrel gage or its out of balanced, or fan motor bearings are going out.

That sounds like the resistor has gone bad....These are usually under the hood....one the passenger's side bolted into the firewall...

front of motor lower end just follow from battery down the wire is red there should be 3 bolts holding it on

In order to achieve different speeds for the fan motor, there is a bank of resistors that reduce the voltage depending on what speed is selected. This is basicaly the same design for all cars on the road. The fail mode causes the full voltage to bypass the resistor bank so the fan runs at high speed (maybe even higher than your normal high setting). On most newer vehicles, including your '02 T&C, to help keep the resistors cool, they are mounted to a heatsink and then that assembly is mounted in a hole in the A/C ductwork just below or behind the glovebox. My '02 T&C has the 3 zone auto temp control and it had a fancier resistor block, but the function is the same. You should be able to get the cheaper one for <$25 at a parts store.

sounds like an auxillary device like alternator, power steering pump, water pump, etc. check all your fluids. pay special attention to your alternator, i have heard this before and it ended up being an alternator

-Check for loose bolts at drive plate (flywheel)
-Check for all motor and transmission mount. It could be loose.


Mai

Make sure you didn't accidently knock a vacuum line off. Sounds like a vacuum leak to me.