Question about 1999 Pontiac Grand Prix

1 Answer

My fan to control the heat and air doesn't always want to work.

Fan works sometimes.

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 749 Answers

Blower motor may be going bad or have a loose connection if certain speeds do not work the blower resistor is bad.the Blower motor is located beneath the dash on passenger side under the glove box.There may be a cover that will need to removed to gain access.

Posted on May 16, 2010

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Why the air sometimes does not blow in a 2000 Isuzu Rodeo


Since it is intermittent. Check plugs to the controller and blower.

Dec 03, 2016 | 2000 Isuzu Rodeo

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

Jul 22, 2015 | Cars & Trucks

1 Answer

2001 GMC Sierra 1500 fan is only working on 4 & 5 & the heater control is working intermittently.


The resistor is probably right next to the blower. Recommend you access the blend door to see why it is binding. There are procedures at the link below.
Repair Guides Air Mix mode Actuator blend Door Removal Installation...

Aug 11, 2017 | GMC Cars & Trucks

2 Answers

My a/c (heater & Defrost) doesn't always work, could it be a fuse or the fan blower?


Check whether you might have bad connection or contact,or e ven bad switch.

Sep 03, 2012 | 2005 Kia Spectra

1 Answer

Heater / air conditioner fan control doesn't engage fan. Previously, it only worked in high speed.


I would replace the blower motor resistor first then see if that corrects this. The resistor is located next to the blower motor under the dash.

Jul 16, 2012 | Cars & Trucks

1 Answer

Heat and aircondition.My heat and air only work on number 5


Sounds like a "fan motor speed controller" or FMSC.
Either that module has gone out...or we're not getting the signal from the control panel sometimes called the EATC.

Lincoln has an EATC (for electronic air temp control)...GMC has something similar.
There is a way to run a diagnostic test of the EATC but am having trouble finding it for GM models.

If EATC test is done and fails...it will tell you it failed and would need replacing.
If EATC passes...it will tell you it passed and the fan motor speed controller would be at fault.

Usually, when a speed controller fails, the blower motor either doesn't turn OR it runs full blast.
Both parts EATC and the FMSC are expensive.
Since yours is running full blast...at least its providing air.
I'd try to run a diagnostic check to be for sure and maybe your parts might be less expensive and available at your local parts store.

Hope this helps...

Aug 13, 2011 | 2004 GMC Envoy

2 Answers

What causes the fan to continue to run when controls are off?


The FAN SENSOR CONTROL.
This device is disclosed which causes a fan of a heating and/or air conditioning system to continue to run until the temperature in the duct work of the system reaches a desired temperature, so as to remove all heated and/or cooled air from the system, however, the device is designed so as to not cause the fan to be actuated due to changes in the duct work temperature which are due to changes in outside temperature or causes other than the operation of the system. A sensor which is located in the duct work controls the operation of the fan in response to temperature changes only if the sensor control circuit is first energized by the operation of the system.

Hope help with this (remember rated this help).

Mar 12, 2010 | 2006 Ford Fusion

1 Answer

Blower/Switch Problem with Air Flow?


The extra air flow most likely turns the fan motor, check the fuses, check the fan motor switch for power if O.K. check the fan motor for power..

Aug 15, 2009 | 2002 Isuzu Rodeo

1 Answer

Heating and air conditioning fan is intermittent


there is a fan resistor card in the evap housing(under glove box) that controls fan speeds

Jun 21, 2009 | 1992 Subaru Legacy

Not finding what you are looking for?
1999 Pontiac Grand Prix Logo

114 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts

yadayada
yadayada

Level 3 Expert

76051 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8265 Answers

Are you a Pontiac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...