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Toyota 2000 Camry-- fan only working on high speed. When I switch over to the lower speeds nothing comes out; when switched to high a obtain a strong flow.
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Probably not. If it runs on high, it is probably good. Unless is sounds slow or 'tight' on high, or squeaks or chips , etc. Run the fan with the engine off and then shut the fan off and listen and see if you can hear how long it takes to slow down. If it stops in just a second or two, the bearings are tight (dry). If it spins down normally, maybe three to eight seconds or more, the motor is fine. You really don't need this check.
It is most likely your blower relay. Most cars have one or two relays to control the fan motor, which is a single speed motor that the relays and speed switch and blower resistor control the power to.
One relay is for high speed, also switch contact. One relay is for other speeds and divert current through a blower resistor located by the fan duct under the dash or under the hiid by the fan. Also the switch contacts for each speed.
It cad be the dash switch, which has to handle the blower resistor current for all the lower speeds is burned out at those speeds. It can be the low speed blower relay, as I mention above, is burned out, this is most frequent cause. it can be the blower resistor is burned out, this can give no low speeds, or loose speeds below a certain speed setting.
Try you manual for the blower relays' positions. Try swapping with the horn relay to test if it is the same type of relay. Take out the blower resistor carefully (pretend you are defusing a bomb or playing "operation" game as it has exposed coils that are delicate and if you bump the sides of the opening as you extract it you will damage it and short the coils against each other). the wire coils are very fine bare wire coils that look like springs and if touching can burn out. Switch is harder to test because hard to get at, check the other things first. You should be able to test for voltages at the resistor plug to see if power is coming from the switch, but wiring schemes can vary. Post back or use shop manual to troubleshoot the switch.
The fan speed resistor is the problem........when you are on full speed the current bypasses the resistor and this is what gives you the fastest speed from the fan motor.......on 1, 2, or 3 speed setting, it is directed through the fans speed resistor circuit
It is located in the air box behind the glovebox on the interior of the car passenger side
I just fixed this problem on my 99 Camry. The fan only worked on high. It was the resistor. Bought it for $29.99. It is under the dash on the passenger side. Just above where the passengers left foot would be. You DO NOT need to take out the glove box. The resistor is located just above where the carpet ends. It is held in place by a plug with about 6 wires. It has two phillips head screws. Get a short elbowed phillips head and switch it out.
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