1999 Savana van blower only works in the lower speed ranges. It will work on high speed in the summer months but as soon as the weather gets cold it only works in the lower speed ranges only. (heat or air)
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Re: blower motor only works on lower speed ranges
It's likely the resister block that needs to be replaced... you can locate the part mounted on the duct work under the dash near the fan... there is a connector on it and two to three bolts to remove it.
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Hi Jim, If the vehicle is fitted with climate control it will have electronic management. However it can be wired by someone knowing electrical circuitry to by pass the control. It will save you some cash but will need manual control. Make sure whoever does the job knows what he or she is doing. Have a happy new year. Regards John
I would suggest replacing your blower motor resistor bock. Speed 123 go through a resistor to limit the current flow throught the motor therefore limiting motor speed. High speed bypasses the resistor block which is why the blower would only work on high.
You checked the fuse and relay, did you check to see if you had power at the resistor ? American built vehicles control fan speed by the power circuit which goes thru the resistor. The high speed usually bypasses the resistor. You may need a new blower motor or control switch.
You need a new blower resistor by the sounds of things. When you select
the three lower speed settings, the current supplied to power up the blower motor goes through the resistor, to slow the speed of the blower motor down. When the high speed is selected, the resistor is bypassed, and full current is passed to the blower. I believe the resistor is $12 at an auto parts store. Good Luck Tim
Remove the lower right silencer panel. Remove the electrical connector, it is plugged into the resistor. Then replace the resistor. Since the blower motor works on high speed it is most likely the resistor.
Sounds like you have an issue with the blower motor resistor. The resistor is located in the airbox near the blower motor. It is held in place with two screws.
The blower motor resistor uses a series of resistors to drop voltage to lower fan speed. The lowest setting uses the most resistance and the setting below uses the least resistance. Since all of the lower speeds use the resistor that the speed just below high uses if that resistor goes bad it will cause all the other lower speed settings to not work.
be prepared to renew both the blower motor and blower resistor. if it were just a bad resistor it should work on hi-speed only. make sure you have power to the motor when on hi speed. bad blower motors will kill the resistor. follow the water tubes from under the drivers side of van to the point where they enter the van, that is where unit would be located on the inside. be prepared to remove some seats and wall covers.
you need a blower resistor maybe a blower motor also but the resistor is for speeds and it usually goes when the blower motor starts to draw too much power the resistor is outside under the cowl on the passanger side you may need a connector pigtail also the dealer will have what you need