Question about 1999 Pontiac Grand Prix

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Blower motor fan noise and only works on high speed

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My 1994 gmc yukon is stalling when drove it to chandler and on the way back it stalled what can be the issue. when already change module on it

Posted on Jun 28, 2009

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2 Answers

Weak blower motor


Check good voltage and ground for blower motor. Actuators under the dash may be restricting air flow? High speed doesn't usually use a resister.
Check for hvac trouble codes, in my part of the country, some of the national brand autostores will check codes for free, if there are any.
If you think problem with blower motor, itself, replace it. Sometimes, you can remove blower motor, use jumper wires for voltage and ground, using inline fuse, come off the battery, see if it blows like you think it should?

May 07, 2016 | 1999 Chevrolet Lumina

2 Answers

Blower fan not working


The resistor bank is bad for slow speeds, the switch is bad for high speed. In your test, you have voltage, but the switch wont carry the amps, to run high speed. Open circuits will not blow fuses. Replace both switch and resistor bank for all speeds. Make sure to clean leaves and trash from fan housing and see if fan spins freely.

May 17, 2017 | Cars & Trucks

2 Answers

01 grand.prix ac fan switch only works on high. has a duel temp controller when you turn fan off the only way fan comes back on is to move the temp controller levers


Hi!!
When the Blower Motor Resistor (controls blower speeds) goes bad, the blower motor works only on HIGH SPEED. REPLACE IT.
BLOWER MOTOR RESISTOR Removal & Installation
  • Disconnect negative battery cable.
  • Remove right lower instrument panel insulator panel.
  • Disconnect blower resistor connector located behind right side of dash.
  • Remove blower resistor screws and blower resistor.
To install, reverse removal procedure
Good Luck!! A HELPFUL - 4 THUMBS - rating for this solution would be greatly appreciated. Thank you for using FixYa!!

Feb 18, 2011 | 2001 Pontiac Grand Prix

2 Answers

Heater blower stopped working?


Hello,
You may want to try your fan on all speeds. If it will work on high, you have a bad resistor for the fan motor. ( high speed doesn't go through the resistor ).
If it doesn't work on any speed, I would check the following;
1. Make sure the fuse isn't blown for the fan blower motor.
2. Check, or have checked the wires between the fan control switch and the fan blower motor.
3. Have the fan control switch checked.
4. Have the fan blower motor checked.

I hope this helps you.

Feb 03, 2011 | 2002 Buick Rendezvous

2 Answers

Fan blower motor only works on high position (either heat or ac) and the brearings squeel. Do in need to replave both the motor blower and resistor?


That's what it sounds like to me.

If the blower is making noise than the only thing you can do is replace it.

Blower resistors typically operate by dropping voltage through a set of resistors. The lower the speed the more resistance is needed. High speed requires no resistance and usually bypasses the resistor assembly.

Oct 15, 2010 | 1996 Volvo 850

2 Answers

Heater fan only blows air in the highest "on" position


Well it sounds like the blower motor relay is out you might also need a blower motor if it is using to much juice on high speed then the blower motor is probabley about to go out and with the noise you are describing it sounds like a bearing in the blower motor is about to go out so probabley should change the blower motor and the blower motor relay.

Dec 16, 2009 | 1999 Toyota Camry

1 Answer

I have a 1996 blazer 4x4. The heater fan is making a growling noise no matter what speed it is running at or which position the vents are at... i.e. defrost, floor, etc. I believe the resistors are burnt...


well the growling noise is more than likely a worn bearing in the blower motor it would be better to replace the whole motor, and on the fan speeds the blower motor resistor is the cheaper solution to take and more likely however if the resistor doesnt fix it then look at the control unit in the dash as the problem but like i said more than likely the resistor will fix the problem

Oct 19, 2009 | 1996 Chevrolet Blazer

1 Answer

AC fan doesn't work


Alright when it only works on high speed, then usually the resistor between the controls and the blower motor is bad because the default if on is at high speed so I would replace that first since it is much cheaper than replacing the blower, then if the blower is still making a bad noise, it is wearing out and needs to be replaced too. Both of these parts are under the dash on the passenger side. If you want a diagram, then I advise buying a Chilton or a Haynes manual from a local auto parts store especially if you plan on fixing it yourself. Let me know if you have any further questions.


Benjamin

Apr 26, 2009 | 1999 Oldsmobile Intrigue

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