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I need to know the location of the hvac heater blend door actuator on a 1998 pontiac bonneville se

My ac or heat will only blow out the defrost vents and floor vents.

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Inside the dash ductiong about center of dash. You must remove the dash to get at it.

Posted on Apr 17, 2014

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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

Blower Motor Problems Auto Repair Help

Do you know how to test automotive electrical circuits ?

Heater Blower Motor Troubleshooting


May 19, 2017 | 1998 Pontiac Bonneville

2 Answers

How do I find the ac heat acuator on a 2001 Pontiac Bonneville sle.


How To Install Replace AC Heater Temperature Actuator ...

? 4:40
https://www.youtube.com/watch?v=mVP09M7hLB4
Jul 21, 2014 - Uploaded by 1A Auto Parts
http://www.1aauto.com/temperature-blend-door-actuator/i/1ahcx00293 ... How To Remove Install Door Chevy Monte Carlo Pontiac Grand Prix ...

GM Blend Door Actuator Repair (Saturn, Chevy, GMC, Buick ...

? 4:28
https://www.youtube.com/watch?v=fER3ZqnYLZg
Jul 11, 2014 - Uploaded by willmacneill
The procedure is the same for most GM blend door actuatorsfrom 1990-2013 (found in many vehicles made by Chevy, GMC, Buick, Pontiac, ...

Mode/Temperature Door Actuators May Fail : Pontiac ...




Jan 16, 2016 | Pontiac Cars & Trucks

2 Answers

No air blows out the dash vents hot or cold


if all your air or heat comes out of your defrost than the problem is more than likely your switch or a vacuum hose to the switch. Car's default to defrost when there is a problem. I can't recall off the top of my head but I do believe that vacuum controls the blend doors on the 98 Ranger. I can't quite remember but I think the white one is the main vacuum. Either way. pull out your heater switches, disconnect the rubbery plug with all the vacuum hoses, start the engine....1 of those should have constant vacuum, if not...chase it.....there will be 1 that goes through the firewall to the engine, the rest go to the blend doors.

Mar 29, 2015 | 1998 Ford Ranger

2 Answers

My heat on blows from the defrost how do i fix?


The heat/vent blend door that is located inside of the HVAC system behind dash..Rarely it is the control however it could be....Some of the vent door issues are recalls on certain vehicles."Also Blend vent door actuators that operate the doors can become inoperable...If it is the door inside the HVAC it will probably take about 8 hours to repair...Most vent doors either stick shut and or break..as well as actuators....Only a Dealer Scanner can tell exactly where the problem is.....

Feb 22, 2015 | 2008 Jeep Liberty

1 Answer

Pontiac bonneville diagram


I am sorry we do not have that diagrams. It is copyrighted unless it is posted at another site.

Apr 17, 2014 | 1998 Pontiac Bonneville

1 Answer

2002 ford explorer AC and heat blowing in dash, but very weak from the vents


On the motorcraft parts web site, you can blow up
a picture of the HVAC Blend Door Motors & locations,
as well as part numbers

You can get failed motor from Amazon

With knowing where the motors are located, try switching
the air flow modes manually, to see what positions do not work

Then you know what motors to replace

I also have professional scan tool software & can see the codes
for the motors in enhanced data.

The-- Vent Blend Doors-by name

Defrost-up top
Cabin -the vents as you say in the middle & on the sides
Floor
Recirculate-under the glove box
Blend Door -under the dash on your print

Mar 11, 2014 | 2003 Ford Explorer

1 Answer

2000 pontiac bonneville blows hot and cold at the same time


Sounds like the blend door motor isn't working.

Jan 20, 2013 | 2000 Pontiac Bonneville

2 Answers

Air conditiner cools on right side but not on left side


It can be issue with blend door actuator or vacuum leak or loose vacuum hose connection.
I suggest you few help links.Click the link below and follow the troubleshooting.
-----
A/C Blows Warm? http://whoisbyme.blogspot.in/2012/06/2005-chrysler-pt-cruiser-ac-blows-warm.html

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A/C blows Cold From Defrost Vent Only? http://whoisbyme.blogspot.in/2012/06/2009-mercury-grand-marquis-ac-blows.html
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A/c Blows Warm on driverside? http://whatisbyme.blogspot.in/2012/06/2007-kia-spectra-ac-blows-warm.html

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A/C compressor clutch won't engage http://schematicsdiagram.blogspot.in/2012/04/2000-cadillac-deville-ac-compressor.html

---------------
Ford : A/C blows Warm? http://whoisbyme.blogspot.in/2012/06/2007-ford-freestyle-ac-blows-warm.html

----------
Thanks.

Jun 26, 2012 | 2005 Ford Five Hundred

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