Question about 1998 Oldsmobile Silhouette

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Interior air fan speeds 2, 3, and 4 have quit working.

Air conditioning works great, but the fan suddenly stops. The first speed to go was 3, then yesterday it was 4 and then 2. Only 1 and 5 still work.

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Either the fan itself is shot, or there is a vaccuum leak on the hoses in back of control switch

Posted on Jun 27, 2009

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Posted on Jan 02, 2017

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2008 keep liberty. Heater will blow hot air at slowest speed on fan. If fan speed is increased hot air will cool to almost air condition level


usually means the interior heater is block and will need back flushing to remove the build up in the heater water lines and elements.

Nov 16, 2017 | Cars & Trucks

Tip

Tips for operating Air conditioning system on Toyota Hilux and someother...


To cool off your Toyota after it has been parked in the hot sun, drive with the windows open for a few minutes. This vents the hot air, allowing the air conditioning to cool the interior more quickly.

Make sure the air intake grilles in front of the windshield are not blocked (by leaves or snow, for example).

On humid, do not blow cold air on the windshield. The windshield could fog up because of the difference in air temperature on the inside and outside of the windshield.

Keep the area under the front seats clear to allow air to circulate throughout the vehicle.

On cold days, set the fan speed to high for a minute to help clear the intake ducts of snow or moisture. This can reduce the amount of fogging on the windows.

When driving on dusty roads, close all windows. If dust thrown up b the vehicle is still drawn into the vehicle after closing the windows, it is recommended that the in intake be set to FRESH and the fan speed to any setting except "OFF".

If following another vehicle on a dusty road, or driving in windy and dusty conditions, it is recommended that the air intake be temporarily set to RECIRCULATE, which will close off the outside passage and prevent outside air and dust from entering the vehicle interior.

HEATING

For best results, set controls to;
Fan speed ---- Any setting except "OFF"
Temperature----Towards WARM (red zone)
Air intake ---- FRESH (outside air)
Air flow ---- FLOOR
Air conditioning ---- OFF

For quick heating, select recirculated air for a few minutes. To keep the windows from fogging, select fresh after the vehicle has been warmed.

Press the "A/C" button on for dehumidified heating.

Choose floor/windshield air flow to heat the voltage interior while defrosting or defogging the windshield.

AIR CONDITIONING

For best results, set controls to;

Fan speed --- Any setting except 'OFF"
Temperature --- Towards COLD (blue zone)
Air intake --- (outside air)
Air flow --- PANEL
Air conditioning --- ON

For quick cooling, move the air intake selector to recirculate for a few minutes.

VENTILATION

For best results, set controls to;

Fan speed --- Any setting except 'OFF"
Temperature --- Towards COLD (blue zone)
Air intake --- (outside air)
Air flow --- PANEL
Air conditioning --- ON

DEFOGGING

The inside of the windshield

For best results, set controls to:

Fan speed --- Any setting except 'OFF"
Temperature --- Towards WARM (red zone) to heat; COLD (blue zone) to cool
Air intake --- FRESH (outside air)
Air flow --- WINDSHIELD
Air conditioning --- ON

The outside of the windshield

For best results, set controls to:

Fan speed --- Any setting except 'OFF"
Temperature --- Towards WARM (red zone)
Air intake --- FRESH (outside air)
Air flow --- WINDSHIELD
Air conditioning --- OFF

On humid days, do not blow cold air on the windshield. The windshield could fog up because of the difference in air temperature on the inside and outside of the windshield.

DEFROSTING

The outside of the windshield

For best results, set controls to:

Fan speed --- Any setting except 'OFF"
Temperature --- Towards WARM (red zone)
Air intake --- FRESH (outside air)
Air flow --- WINDSHIELD
Air conditioning --- OFF

To heat the vehicle interior while defrosting the windshield, choose floor/windshield air flow.

on Feb 14, 2011 | Toyota Pickup Cars & Trucks

2 Answers

My interior fan (air conditioning fan) suddenly doesn't work on positions one (lowest) and two, but works fine on positions three and four. What gives?


The fan uses a resistor block that creates the various fan speeds. It sounds as though the lower two fan speed resisitors are broken. This means you will have to replace the fan resistor block. The only other possibility would be the fan switch on the dash you use to set the speed. It is most likely the resistor block, but if you are handy with a test light, you can verify the switch is good or bad, or take it to your favorite mechanic and have him or her verify.
good luck.

Jan 07, 2011 | 2005 Jeep Wrangler

2 Answers

Fan (blower for interior) only works on high setting all other settings basically turns the fan off. Air conditioning still works. There is not air flow at all on the settings (other than high) when the...


The fan speed resistor is the problem........when you are on full speed the current bypasses the resistor and this is what gives you the fastest speed from the fan motor.......on 1, 2, or 3 speed setting, it is directed through the fans speed resistor circuit

It is located in the air box behind the glovebox on the interior of the car passenger side

Aug 30, 2010 | 2000 Toyota Camry

2 Answers

Strange Problem Bravo Ute Air Conditioning


the blower motor has no affect on the AC system,
start the engine and turn on AC and watch the AC compressor to see if clutch engages,if it doesn't the system isn't full,if you are correct the clutch should be engaged and should quit when you change heater speeds,

Dec 23, 2009 | 1988 Mazda B2600 Cab Plus

1 Answer

Blower only works on 4 (top speed)


sounds like you need the blower speed resistor...once you put in the new one it will work just fine.......

Sep 19, 2009 | 2000 Ford Focus

1 Answer

Air conditioning failure above 85 degrees.


Initially I would suggest a Loss of FREON from the system, but there are also several reasons for the A/c to quit. Freon loss,[Leaking seal, Comp. front shaft seal, Split hose, Holed Condenser, Compressor Realay/Fuse failure, Thermo couple switch].
An easy out, is to Purchase 1 can of Freon with added Lubricant and 1 Can of Pure freon.
Inject the 1 Can with Lube into the High Pressure Side Adaptor Port. Look and Listen for Leaks. Start up, with Blowers on FULL speed, A/c Control on Max. A/c, and Heater Coolant Control on Cold[Blue]
Speed up the Engine to about 1500 RPM. Look to see if the Compressor Clutch on the Front is Engaged and Rotating, if it does wait about 30 seconds, and the Condenser Fan should Engage, continue to run the engine and check the Interior of the Vehicle for a change in AIR flow temperature. If it is cool, but not cooler. Stop the engine, and give about 2-3 minutes before adding more Freon from can 2.
If none of this happens to make it work, then I suggest you go to a Reputable A/c Repairer and ask for a CHECK & ADVISE ONLY,on your vehicle, so as to get an ESTIMATE, for repair of what is apparently defective in the system.
Regards,DT

Aug 28, 2009 | 2005 Nissan Altima

1 Answer

Intermittent operation of interior fan - isuzu kb/trooper


fan speed resistor block blown if fan works only on full speed (because power goes directly to fan on full speed, not through resistor)
if fan doesnt work on full speed check for power at fan on full speed with test light if power there fan faulty
no power check switch bank assembly

Aug 06, 2009 | 1999 Isuzu Trooper

1 Answer

2000 Pontiac Grand Prix interior fan speeds 1-4 not working


Check the ground, the resistors are accully resisnting the Negitive Current.

Jul 28, 2008 | 2002 Pontiac Grand Prix

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