Question about 1996 Chevrolet S-10 Pickup

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Fan blower will not operate on high speed - 1996 Chevrolet S-10 Pickup

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Check the temp control unit ( the dials in your car that let you control the blower speed temp etc) then check your blower motor. i had the same problem and i just needed to replace the control unit because the dials were wearing out.

Posted on Sep 16, 2010

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2 Answers

How do you know if your blower resistor is bad?


Unlikely a blower motor resistor problem. If the resistor is faulty. the fan speeds will not work/fail on the lower speeds. High speed will normally always work. If the fan is non operational suspect a fan motor issue.Bad fan motor/switch/wiring to it

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I have a 1993 sel, had problems with ac unit changed the eveparotor. The ac now works but the fan will only operate on slow speed. As in on low there is nothing when u set the fan speed to max then some...


Yes,could be your blower resistor is bad,it's right next to the blower motor,it controls the blower motor speed,easy to replace. Duralast Blower Motor Resistor Just took a guess at the model type since you didn't state,wow,high dollar price,guess it comes with a Mercedes,paid about 18 bucks for mine on my 85 Nissan.

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The ac fan motor in my 2011 Peterbilt only works on high......anyone else have this problem ?


I don't even have a 2011 Peterbuilt! ;)
But as in many vehicles when the blower only works in high its due to a bad blower resistor. The resistor is in operation on slower speeds and the motor gets full power and bypasses the resistor on the high speed setting.

As for where it is on a Peterbuilt, again I don't o0wn one so I can't say for sure.
It should be located near the blower motor as it uses the fan blades air to keep it cool.

Oct 04, 2011 | Cars & Trucks

2 Answers

I have 91 Toyota camry & just recently my fan blower on works on high, the medium and low functions don't work. Is there something wrong with my fan blower?


No.

Probably not. If it runs on high, it is probably good.
Unless is sounds slow or 'tight' on high, or squeaks or chips , etc. Run the fan with the engine off and then shut the fan off and listen and see if you can hear how long it takes to slow down. If it stops in just a second or two, the bearings are tight (dry). If it spins down normally, maybe three to eight seconds or more, the motor is fine. You really don't need this check.

It is most likely your blower relay.
Most cars have one or two relays to control the fan motor, which is a single speed motor that the relays and speed switch and blower resistor control the power to.

One relay is for high speed, also switch contact.
One relay is for other speeds and divert current through a blower resistor located by the fan duct under the dash or under the hiid by the fan.
Also the switch contacts for each speed.

It cad be the dash switch, which has to handle the blower resistor current for all the lower speeds is burned out at those speeds.
It can be the low speed blower relay, as I mention above, is burned out, this is most frequent cause.
it can be the blower resistor is burned out, this can give no low speeds, or loose speeds below a certain speed setting.

Try you manual for the blower relays' positions. Try swapping with the horn relay to test if it is the same type of relay.
Take out the blower resistor carefully (pretend you are defusing a bomb or playing "operation" game as it has exposed coils that are delicate and if you bump the sides of the opening as you extract it you will damage it and short the coils against each other). the wire coils are very fine bare wire coils that look like springs and if touching can burn out.
Switch is harder to test because hard to get at, check the other things first.
You should be able to test for voltages at the resistor plug to see if power is coming from the switch, but wiring schemes can vary.
Post back or use shop manual to troubleshoot the switch.

Oct 29, 2010 | 1991 Toyota Camry

2 Answers

Need to change fan motor control switch? Only works on high setting.


this problem is not caused by the switch, it is caused by a defective blower motor speed control resistor, the resistor is located near the blower motor.

Sep 22, 2010 | 2003 Mercury Grand Marquis

1 Answer

I have a 2004 Pacifica and the blower motor runs on high all the time, can't get it to work on slower speeds


The high blower works off a relay in the high speed only so the fan switch is at fault on your vehicle
Replace the fan blower control speed switch which is the one you adjust the lower fan speeds

Jun 15, 2010 | 2004 Chrysler Pacifica

2 Answers

2002 Honda Odyssey fan only works at high speed. The A/C compress


Usually when the blower fan only operates on hi speed, its because of a failed blower motor resistor. You still have hi speed because on hi, the power going to the blower motor goes directly to it, as opposed to the lower speeds, when the power is routed through the resistor, thus lowering the voltage, which in turn lowers the speed of the fan. The resistor is usually located near the blower motor itself, under the hood back near the firewall.

Aug 15, 2009 | 2002 Honda Odyssey

1 Answer

Blower motor only works on high. It started by not working on low then would not work on the two lower settings and now only works on high.


Most likely cause is the blower motor resistor. It controls the fan speeds. When it goes bad, it will not allow different speeds to operate until it won't let any speeds operate.

Jul 12, 2009 | 2004 Jeep Wrangler

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

1 Answer

99 suburban blower fan runs on high only


you need a new blower resistor it is located next to blower motor under dash

Dec 08, 2008 | 1999 Chevrolet Suburban

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