94 4runner air conditoner help

[RED123]

My 94 runners air conditoner works fine its the blower fan .It blows just only at one speed slow .For a while you could put it on high and it would blow on high for a few minutes and then go back to slow speed and now all it does is blow on slow speed .Does anybody know what would cuase this or what i need to replace ?

 

[fourwd1]

There's a fan speed control module, mounted in the duct work, usually in the pass side area.

It has 3-4 resistors (look like coils of wire). One or moe of these resistors go open, resulting in loss of a fan speed.

Hi speed doesn't usually go out, as it's direct and doesn't require a resistor.

 

[RED123]

There's a fan speed control module, mounted in the duct work, usually in the pass side area.

It has 3-4 resistors (look like coils of wire). One or moe of these resistors go open, resulting in loss of a fan speed.

Hi speed doesn't usually go out, as it's direct and doesn't require a resistor.

Well if high usually go out then what do you think my problem is .I only have slow speed no high speed .