Question about Pontiac Sunfire

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Fan motor won't turn off

Fan motor runs in all speeds but wont turn off via the dial or the car turned off

Posted by Anonymous on

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  • 176 Answers

Some GM car dont have off position only low medium high

Posted on Apr 20, 2014

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 7 Answers

SOURCE: fan motor keeps running on Audi A4 2004

fan motor has a thermal switch which turns on the fan as soon as the engine heats up. what happened there is that the switch is stuck on the closed position which keeps the fan on all the time. you should go to a garrage and have the part changed.

Posted on Jul 22, 2008

  • 107 Answers

SOURCE: Lincoln 2000 town car Blower doesn't work at HI-MED-LOW speeds...

it is called blower motor resistor , should be close to blower motor , you will see a plug type connector with two screws , remove the screws and there should be a resistor inside the cover for the motor, swap with new and reassemble

Posted on Feb 19, 2009

matney68
  • 426 Answers

SOURCE: The Heater/AC fan runs all the time on a high

The blower resistor will keep it from working on anything but high

Posted on Oct 03, 2009

dmftrucker
  • 1922 Answers

SOURCE: 04 Bonneville, GXP. Blower Motor not Function Properly

sounds like the sensor is becoming questionable or a hi resistance ground in this part of the blower sensor circuit

Posted on Oct 05, 2009

  • 6 Answers

SOURCE: I also have a 2004

Hello.

There are two probable causes for this problem.

The first is the fan power relay is sticking in the closed position and drawing power even with the key off. When you disconnect the battery the relay resets itself and you are back to "normal" until you run the cycle over again.

You noted that your SAAB has manual climate controls. It still may be a good idea to check the BCM harness ground connections. BCM is the "Body Control Module". I do not have a wiring diagram available for your car so can offer no additional advice other than to say that millions of dlooars are spent in the USA every year due to dirty or loose ground connections on computer and module harnesses.

All the best.

Posted on Nov 21, 2010

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Check connector at the blower motor. The ground burns up in the connector. Also try this turn the blower motor on speed 3 then smack the bottom of the blower motor. If it starts blowing the brushes in the motor are worn out. Replace the blower motor.

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Hi Al, I'm glad to help!

Three possible causes: (1) The high speed circuit in the radiator fan motor could be defective. (2) The high speed fan relay Could be defective. (3) It possibly may have a wiring issue. I've seen at times where you can wiggle the fan motor connector that's mounted on the fan shroud and the motor will kick on. If this is the case then replace the hole assembly which is a motor and shroud assembly. Hope this helps and have an awesome day.

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The heater fan won't stop, even if i turn off the key the fan still turn, unable to control it, it only turn at one speed (not the fastest one), i check the resistor it look like there's a short in it, the...


Your impala doesn't have a resistor , it has a blower motor control processor and it doesn't work the way you think it does
Chevy Trailblazer EXT Blower Motor Won Turn Off
Blower Motor Control Processor
The blower motor control processor is an interface between the HVAC control module and the blower motor. The blower motor speed control, battery positive voltage and ground circuits enable the control processor to operate. The HVAC control module provides a PWM signal to the control processor in order to command the blower motor speed. The processor supplies 12 volts to the blower motor through the blower motor voltage supply circuit. The control processor uses the blower motor ground as a low side control to adjust the blower motor speed.

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My heat is hot but doesn't blow. Is it the resistor, motor or something else? I checked my fuses they look fine.


Clear out the dust on the dial and slide control first.
MOVE these control back and forth and sensor for broken linkage and connecting rods.
If these are able to move smoothly then turn the back and froth and monitor for the flap / defector blending valve movement.
Pass a ShopVac to clean out all the dust.
==== The resistor pack for the blower motor can fail over time.
Check loose connector on blower and resistor pack around the firewall.

Please keep me up to date on the fix via email.

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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.

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