Question about 1998 Pontiac Bonneville

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Weak hvac air flow blow motor works great

I have a 98 Pontiac Bonneville blower motor runs and works great, but I am getting very weak air flow out of all positions floor defrost and vent the car has a C60 push button hvac system in the pasted I replaced the mode actuater behind the glove box but this time I am stumped. Any help would be great.. some blogs say to cut vacume lines coming form the programmer but I am not sure I want to do that yet

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Tear apart ducts and check for nesting issues-Denny

Posted on Dec 31, 2013

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SOURCE: 2004 Pontiac Montana blows cold air in defrost

There is a mix damper inside your duct that controls the heat over heater core and ac evaporator that to your floor and one to your defrost. it is probable an electric actuator, that is not functioning properly. If yu can locate it and manually move it, you might have to remove the actuator motor first, you should be able to figure out your problem, I hope this helps! merry Christmas!

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SOURCE: 2005 Pontiac Bonneville hvac blower does not come on

Start by checking the blower resistor. It should be under the dash on the passenger side near the blower itself. You will need to remove the glove box to access it. It is a small plate that has only a few screws and a group of wires that go to a plug in the center. Unplug it and remove the screws. When you pull it out it should look like a series of small spring shaped coils. Most likely one or two of them will be burned up. Replace it in reverse order and your blower should start working again. If this is not the problem then test the fan motor itself. Hope this helps. Good luck.

Posted on Jul 26, 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

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

1 Answer

Blower blowing just not much


in all modes, even moving real fast in fresh air mode
no vent blow? weak in hot mode and cold?????????????????

no year stated,so answer will be kinda(weak,)
(weak and. tragically generic, is that good?, no)
1993?
see? this is 2016, so.....
lots of EVOLUTION to the EXTREME here.
for sure the climate control option.?
like Gemini 1 to Space X?


weak blower, the filter is dirty:?
hvac self tests fail? (read hvac page in FSM see it?) ask.
12vdc to blower pins, on high?
yes, then blower is weak(means bad)
or there are restrictions, then
top restrictions are dampers stuck
or
controls to dampers MALF'ING.
or dead mice nests,

TELL MORE GET MORE.?

Jan 31, 2016 | Jeep Grand Cherokee Cars & Trucks

1 Answer

2003 Pontiac Montana heat gets hot in front, blows but seems weak, and no heat on rear controls but blows ******* rear. what is going on?


Is your heater blower motor working on all speeds ? Are you get any air coming from the rear vents ?

Feb 25, 2015 | 2003 Pontiac Montana

1 Answer

I have a 1998 Pontiac Bonneville Se the fluid are good does not over heat but blows vary little heatcan someone help me figure out what's wrong


Thermostat stuck open,blend door not opening,water clock not opening.These are some things that may be causing you to have no heat.Is your blower motor blowing good air flow?

Feb 17, 2015 | Pontiac Cars & Trucks

1 Answer

How do i replace the fan motor and where is it located?


wow, 3 fans in car and we get to guess,why.?
first what are you doing.? (guess,i want cab heat to blow?)
parked key off?
hot engine wanting heat from HVAC vents
? what?
or under hood and radiator fans are dead but overheated.

HVAC is a blower fan,or blower, the fuse is called blow.
does blower sound ok on high???? SouND?
if yes (if no controls are bad)
is air flow weak. yes. that is dampers failing
both the blower and dampers and heater core are in the center
tor right(usa) of dash in hugh black box.
first check fuses
then scan the car. yes, you must scan it see HVAC errors
or its all just a waste of time..

some models have filter and packed up ,my block air flow
some have it others dont,. not fun finding it.
most are behind glove box (after removal)

Jul 01, 2014 | 2007 Jeep Compass Limited

1 Answer

1998 bonneville heater air


sounds like either the door isn't opening all the way or some of the tubing has either come off or has holes.

Dec 31, 2013 | 1998 Pontiac Bonneville

1 Answer

2003 Ford Explorer HVAC blows weak, blend door motor and blower motor resistor already replaced


is the cabin air filter plugged up and it's not getting any air to blow?

Jul 10, 2012 | 2003 Ford Explorer

1 Answer

Looking for vent flap modulator....ac is cold but flap is closed and wont let air flow into car interior..what is the real part name...the car is a still nice 98 pontiac bonneville that is very hot to...


Hi!!
The part is called Blend Door Actuator, it is located on the passenger side under dash, behind glove compartment, on the blower motor housing, is held by two or three screws and has an electrical connector plugged into it. You can get a replacement at almost any auto parts store.
Good Luck!! A HELPFUL - 4 THUMBS - rating for this solution would be greatly appreciated. Thank you for using FixYa.

Mar 19, 2011 | 1998 Pontiac Bonneville

1 Answer

Air flow in car vents low


Sounds like the flap that controls the direction of air flow is stuck in the wrong position. Possibly a vacuam line off the actuator.

May 30, 2009 | 1988 Pontiac Bonneville

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