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Fan hardly blowing in high speed and worse in lower speeds and a small knocking noise under the dash from middle to passinger side. Then quitrunning then a plastic type smell.

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Your blower motor burnt out. Replace the blower motor and the fan element.

Posted on Jul 08, 2010

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Also check the in car filter which is in most new cars , it gets blocked with dust etc and should be checked and replaced on regular basis, check owners manual for location etc, may be reason your moter burned out

Posted on Aug 09, 2010

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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

1 Answer

Have a 2009 Nissan Quest I can't turn the heat off. Just stays on a high level of blowing out heat .


If you have a fan that has different speed settings (1234, or low med high etc) and the only one that works is high - then the blower resistor pack has failed. If you have a climate control unit (where you just pick a temp you want) then the fan is controlled by the heating system and it sets fan speed. If you have climate control style try lowering the temp to a lower setting (current temp in vehicle) and see if fan slows down. If not then climate control unit or fan resistor bad. If dial type and you get nothing on lower settings (only high works like mentioned above) you need to change blower resistor. It is located under dash near the fan itself. Look for small unit bolted in duct near fan with wire plug going to it.

Feb 23, 2015 | Nissan Cars & Trucks

3 Answers

My lower fan speed don't work except for the high, the fan high speed stay highest


Hello sanjuis24
It sounds like you've got a bad blower motor resistor. The resistor is located under the right side of
the dash at the blower motor. A new resistor is not very expensive and it's a fairly easy DIY.
Hope this is helpful

Mar 07, 2011 | 2003 Chevrolet TrailBlazer

1 Answer

At high speeds, I here a high pitched squeal coming from the passenger side dashboard. Its like the wind is reflrcting off something and it makes this annoying sound. Can you help me figure this out.


I'd check the passenger side mirror first, make sure it is tight to the window frame, no gaps. It causes a wind noise or whistle. It could be from the outside of the truck, try to pin point. Does noise go away with either window down? Does noise get louder turning in one direction (wheel bearing)? Does it get worse then seem better (could be tire noise)? Eliminate fan motor, and radio. Does it get worse with vehicle speed or just engine speed?

Jan 27, 2011 | 2004 Ford Explorer

1 Answer

The heater when I turn it on high blow it makes a noise like I can here a fan running and when I turn it down you can here it shut down. Note; the blower only works on high.


LOWER SPEEDS FOR HEATER / AC ARE CONTROLLED BY A RESISTOR. IT IS NORMALLY LOCATED UNDER THE RIGHT SIDE OF THE DASH, NEAR THE BLOWER MOTOR. APPROX. 2 1/2 INCHES LONG, HELD IN WITH 2 HEX OR PHILLIPS HEAD SCREWS. GET A NEW ONE BEFORE YOU START FOR IDENTIFICATION & COMPARING. GOOD LUCK, DR VOLT.

Jan 24, 2011 | 1997 Plymouth Voyager

1 Answer

Fan switch only works on high


It is very likely that the blower motor resistor has burned out. The resistor uses several resistors to drop voltage which drops the fan speed. Since high speed requires no drop in resistance it bypasses all the resisitors. Since none of the lower speeds work I would belt that the resistor for the setting just under high speed has burned out out. since all the other lower speeds use that resistor. Sometimes they will also have a non-serviceable internal fuse that will blow.

Sep 28, 2010 | 1998 Mercury Mystique

1 Answer

1996 Ranger 2wd interior fan blows hi spd only


Possible solution is to check the fan speed switch. These go bad and won't change the speed/ or function in the lower speeds.

Dec 29, 2009 | 1996 Ford Ranger SuperCab

1 Answer

Jaguar 2004 xj8 the fan quit blowing, could it be a fuse...feel the air...when i hit the fan speed it moves up to the high speed but does not blow....


does it blow on any speed??? if not turn the blower on and find it usually under the left side of the dash, take any object and knock on it, if it then works, it needs replacement

Sep 17, 2009 | 2004 Jaguar XJ-Series

2 Answers

Blower dosent blow on high


fan blower speed switch under hood usually in fire wall or in heater box under dash area if you do not change it you will keep losing all your speeds until nothing left! it is not!!!!the one in your dash that you hand operate! hope this helps.John

Jan 24, 2009 | 2006 GMC Envoy

2 Answers

2001 New Beetle A/C fan noise


Check the fan assembly probably located behind your glovebox. The fan could be off-center.

May 19, 2008 | 2000 Volkswagen Beetle

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