Check the cabin filter if applicable.
The A/C drain plug is clogged. When it rains the humidity is high and the A/C will remove the moisture in the air. If the drain is plugged water flows to the passenger side through the blower motor and onto the floor have the drain plug cleared or you will be replacing your blower motor on a regular basis. Until then do not use A/C or front defrost setting.
Yes a clogged VENT pipe can cause a sluggish drain
No
A clogged lubrication passage would cause a failure of whatever component is not getting the fluid.
No. Oil circulation has nothing to do with acceleration. A fuel filter change on the other hand may help. Things that cause poor acceleration include clogged fuel filter, clogged air filter, need of a tune up, some electrical problems or a clogged catilytic convertor.
A clogged converter will cause an extreme loss in power, poor mileage, and hard starting. If it is clogged really, really, bad it may cause the engine to not even start.
A malfunctioning blower motor resistor will cause the blower motor not to work. When the resistor is bad the blower motors will not turn on.
It could be a partially blocked heater core or AC evaporator, or it could be a lot of buildup on the fan. Check if there is a filter after the fan, under the dash or behind glove box, It is clogged, shake it out, and or wash it.
Most likely cause is a failed blower resistor.
There are several common heater problems for a 1997 f150. A stopped up or leaking heater core, bad thermostat or clogged up blower fan housing all can cause heat problems.
Yes, a clogged fuel filter can cause hard starting, stalling, and complete loss of fuel supply. A partially clogged fuel filter can also cause the pump to overheat and fail. If you suspect it is clogged, replace it.
neither,blower resistor or blower module controls fan speeds.