Question about 1991 Toyota Camry
This problem is caused by the blower speed control resistor, it is located near the blower motor.
Posted on May 27, 2010
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Posted on Jan 02, 2017
the various speeds are controlled through resisters (spring-like in apperance) one of different value for each speed, none for highest speed as the power gets to the blower uninpeeded . the resistor pack could be located on the center of the firewall, held by 2 screws. thats under the hood. where the engine bay ends...i.m sorry i don't know the exact position on your model
Posted on Jul 28, 2009
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.
Posted on Oct 29, 2010
Hello Go west.
No specific fuse I am afraid.
What you will find is a burned out blower motor resistor.
This resistor is mounted beside the blower motor just above the passengers feet under the dash.
Two small screws hold it in place. Easy to do. You may need to remove a hush panel to see it.
The resistor should be available at your favorite auto supply or at the dealer.
Thank you for using FixYa.
Posted on Nov 15, 2010
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