I would think the blower motor is defective, the brushes are worn out and that explains the intermittent operation.
So easy
the switch is bad,
you discover that here
"If we pressed in or put pressure on the blower speed switch, the air would blow out."
replace the bad switch.
Pull the selector panel out. The wires may not be completly connected behind panel. Push in on each individual wire. Try it before you put it all back together. Look for a used one at a salvage yard.
SOURCE: htr fuse blown.no heater or blower working.blows fuse instantly
I would have taken it back immediatly and told them that it worked before and oesnt now since they worked on it and you would appreciate it if they at least looked at it.
If they refuse, then never go back and you will have to trace the problem using a voltemeter.
Make sure the fuse is the right Amperage.
Buy a repair manual from a auto parts saled store and see what else connects to that fuse, you could have a bad blower motor, or some other wire that got damaged durring the clutch install.
good luck
SOURCE: heater blower makes noise on high speed
it is either a bad switch or window motor. finding a wiring diagram and shooting power to the correct wire will identify whether the switch or motor is faulty.
SOURCE: The blower works blowing only cold air no heat? I
The heat is generated by a radiator located in your dash using engine coolant. You don't have heat because the valve that is controlling the coolant flow is closed - either it or the commands that is controlling it are broken - find which and fix them.
Testimonial: "Is this valve easily accessible? How do you keep it open? Commands, is that computer realted?"
SOURCE: Heater will not work. Blower will not come on.
Did you check the fuses by eye or measure the voltage with a meter? There may be a separate fuse panel in the engine compartment as well as in the interior. Look for a fuse marker Accessories too. The blower, radio, etc are controlled by the access. circuit.
Testimonial: "well it was a good idea fuse and master fuse ok got to be a relay some where but it is not in the eng comp. box."
SOURCE: Hi, I have a 2007 suzuki grand vitara and recently
Check the fan by connecting 12V direct to the fan. If running the failure is probably due to defective regulator - called the fan resistor. The Fan resistor can be found behind the glove compartment mounted in/on the air channel. The unit/component must be replaced.
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