Question about 1995 Buick Park Avenue

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The blower fan (motor) runs constantly in defrost mode and the climate control system does not light up nor work

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Very common for these units to need replacement. I would be looking for a junk yard replacement.

Posted on Jul 14, 2009

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I have a 98 bonneville se. the blower fan only comes on when the knob is all the way up and it ONLY blows heat and absolutely no cold also the air only blows out the defroster and the floor


How did you test the A/C system ? Hook up gauge manifold , test A/C pressures ? Manual or automatic climate control ? The blower motor only working on high means the blower motor resistor is bad ! Did you hook up a scan tool an check high an low pressure switchs inputs to the PCM - engine computer . Does the A/C compressor clutch engage ? turning on the compressor ? Moving the mode switch does nothing . Doesn't move from floor to vent to defrost ? Probably the mode door actuator ! Don't think the HVAC control panel is bad . Just a few little things . Pushing the A/C button on the control panel just send a electrical signal to the PCM , the PCM will energize the A/C clutch relay , turning on the compressor .

The Trainer 40 When the compressor won compress

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Do you know how to test automotive electrical circuits ?

Heater Blower Motor Troubleshooting


May 19, 2017 | 1998 Pontiac Bonneville

1 Answer

Malibu heating and ac


does the car have automatic climate control?

Apr 05, 2014 | 2005 Chevrolet Malibu

1 Answer

2000 durango cooling system fan running non-stop


Many engine control system faults can cause the radiator cooling fan to come on and run non-stop. Also, if your A/C is on or if you have your heating and cooling controls in DEFROST mode, this can cause the radiator cooling fan to come on (normal operation). Or there could be a cooling fan circuit malfunction (like a stuck relay) causing this to happen.

Check to see what mode your climate controls are in. If the climate controls are not in A/C or DEFROST modes, then you should have your engine control system properly diagnosed to determine the cause of the radiator fan being on continuously.

Also, if the Check Engine light is on, this is a clue that the engine control system is malfunctioning.

Nov 24, 2011 | 2000 Dodge Durango

1 Answer

Climate control blower does not operate


You will have to located the blower motor. Its ofter under the dash on the passenger side or under the hood on the passenger side firewall. Remove the wiring harness and check for power and ground with a 12 volt test light. Make sure the blower is set to the on position on the control panel. If there is power and ground there the motor will need to be replaced. If no poweer or ground is present, the problem is likely to be in the control panel.

Apr 22, 2010 | 2007 Mercedes-Benz ML350

1 Answer

2006 Murano blower not coming on in defrost mode.


climate contol switches are knackered sorce new or salvage. common problem

Dec 15, 2009 | 2006 Nissan Murano

2 Answers

My heater puts out heat however the blower motor does no run


I am going to assume that you have the Automatic climate control on your car. it gives you an auto fan mode, and temperature options. Often the problem does not lie in the blower motor, but rather, the climate control module. Often, the blower motor only works on Auto fan mode, or on full out. It will often also only operate in certain modes, such as only in defrost mode, or panel. I have had several town cars and Grand Marquies of these era's and have had the same problems with 2 of these cars. The only good solution to the issue is to replace the climate control module, which is the panel with all of the switches for the heater controls. If you're really adventurous or cannot find the replacement part, it may be possible to hard wire the fan to a multi resistance switch, but you really got to know what you're doing.

Dec 12, 2009 | 1992 Lincoln Town Car

1 Answer

98 Park Avenue blower control


It sounds like the air distribution door motor is bad. If you turn the fan speed to low with the ignition on/engine off and try to change the mode to something other than defrost, you should faintly hear a motor running. If its making clicking noises, then it is most likely stripped. This is a fairly common problem with mode door motors. It will have one on each temp door for the dual climate control as well. Those ones usually last longer.

Jul 13, 2009 | 1998 Buick Park Avenue

1 Answer

A/c heater climat control switch


Check the relais module located inside under the rh side of the heather box you can see the connector most of them need to be replaced as they burn out you may need to replace the blower motor as well,high amp draw caused by faulty bearings will overload the blower motor controller

Jan 16, 2009 | 2004 Chevrolet Silverado 1500 Crew Cab

1 Answer

Blower fan does not work on low or medium only on high. Lx model has auto climate control. wondering if it is blower motor, blower resister, or control (bad contacts). All buttons work on climate control....


Sounds like the problem is more with the blower motor assembly itself. The blower motor have micro-proccers built itnto them which comunicate with the control heads and do the actual regulating of the fan motor. Dealers have computers with diagnostic software which allows them to monitor what is happening in the eletronic controls of the vehicle. Electronic diagnostics without the diagnostic software makes it very diffecult to pinpoint the actual item causing the problem.

Jan 01, 2009 | Hyundai Motor 2003 Sonata

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