The car will run 'rich'. There will be more smoke from the exhaust and less power available. Fuel consumption will suffer. The engine will run poorly. If not attended to it could stop working altogether
You do not wait for signs it needs an air filter. Just replace the air filter every 30,000 miles. Bascially if you remove the filter and it is dirty, replace it.
Needs tune-up? fuel filter? Air filter? Plugged catalytic converter? Needs tune-up? fuel filter? Air filter? Plugged catalytic converter?
A dirty cabin air filter in your car or a dirty air filter in your home can reduce the amount of air that goes across the evaporator. When that happens, you aren't pulling enough heat out of your home/car and the AC lines including the evaporator, can freeze and completely block the air.
A car engine has a/an: * air filter * cabin air filter * fuel filter * oil filter * transmission filter
Even when your vents are closed, air still is being pulled into the car. The musty smell means you inside cabin air filter needs to be changed. You can gain access to the filter through your glove box.
It needs a tune-up..ie spark plugs air filter new wires etc
There is no Cabin Air Filter on the 2003 Lincoln Town Car
stuff in the air.
Most people when they say "air filter" are referring to the engine air filter. Cabin air filter cleans the air that comes into the car, goes through the heater core or air conditioner and then out through the vents into the cabin of the car.
there is no filter on this car
Dirty air will enter the engine causing wear to all moving parts. The life of your engine will be shortened considerably.
It should be inspected once a year because critters are known to nest in there. Replacing the filter every 35K is a good practice but it really depends on how dusty the driving conditions are.