Furnace blower needs repair

Motor might be bad and shutting down on thermal protection. Is this a direct drive or belt driven ? .if belt driven try adjusting the belt tension or just replaced the motor

Furnace burner and heat element are not the same. I think the fan time delay, a sensor that turns the fan on when this sensor senses heat, is shot and needs replacing, for a furnace type heat ( gas heat)

You really, really need to get your furnace checked by an HVAC (Heating, Ventilation and Air Conditioning) expert. Your furnace has a section where the fire heats tubes that air is blown across then out to your home to heat it. The air in your home and the air from the combustion process should never mix. If you smell exhaust, it's possible there is a breakdown in this part of the furnace and exhaust, which can include carbon monoxide, could be pulled into the air stream and be circulated in your home. Carbon monoxide can and will make you go to sleep and not wake up! Do not use the furnace until you get it checked.

Hello
Its possible the motor is going bad,more likely the blower wheel assmebly needs to be cleaned.

Have a look at the blower motor assembly for dust and dirt on and around the blower motor and wheel.Clean it off with a damp rag and a vacum cleaner.
Check the area for any trash or loose stuff that could be causing this smell.

Usually when a motor goes bad it will run for a while then slow down,then stop on thermal overload.

Then when it cools off it will restart.

Hello, looks like the burners are not staying lit Because the furnace is going off on its high limit switch. This could be due to the blower motor being loose on the motor shaft, the blower wheel being extremely dirty, the bearing on the motor can be worn etc. Turn off power to the furnace and see if you can spin the blower wheel by hand, if not the blower wheel will need to be replaced.

Sunbinder...you will need to do a little troubleshooting. Turn it off again and wait 20 minutes then back on. If no noise or odor. Are you certain that the smell came from the blower. "Thru-out the house is a lot of smell. Listen closely on startup and running....any unusual sounds. ? Which fan are you talking about ? Furnace ? Vent like bath or kitchen ? If you are handy you can check the wiring connections to be sure they are secure and making good contact with tight wirenuts or screws etc.

I would turn the furnace off, locate where the blower motor is, usually near the filter.. If you are capable,
reach in and try to turn the blower wheel. If does not
move, its possible the motor is bad.

If it is a multi-speed blower, change the heat spped to a different speed and see if the breaker trips, if it does then the indoor blower motor is probably bad

If the furnace is overheating you are smelling the insulation and the adhesive glue burning. Shut the furnace down and find out why it is overheating. Make sure the filters are clean. Check the blower motor and capacitor.
Good luck.....

im assuming you are running a/c and not heat...Was the filter burning??  if not and there are no other obvious burnt wires then id say you need a new motor. The filter, if it was'nt binding the blower wheel or wrapped arround the motor shaft would not have caused the prob.