Question about Pontiac Bonneville

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My 2004 bonneville's won't blow air when the heat is on.

I can hear the fan move when I prompt new directions on the panel. For a month I could smack the dashboard and it would turn on, but now it won't blow air at all? Is this a fuse issue maybe?

Posted by on

1 Answer

Fuses don't cause problems

A fuse is like a straight piece of wire,
there to protect the circuit from excess current

If the motor fails to come, on access the plug & power
to it & test using a wiring diagram,then pull the motor
if it fails to work when you put power to it, bypassing the
control circuits

Posted on Mar 25, 2014

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SOURCE: 2001 pt cruiser no heat

did you check the fluid level by removing the rad. cap? Radiator should be full to top. If Chryslers are low on coolant, the heater will not blow warm air.

Posted on Jan 04, 2009

bridgesdean7
  • 41 Answers

SOURCE: 97 Jeep Grand Cherokee only blows heat and ac out of dashboard

try recharging the ac

Posted on Jun 03, 2009

  • 3 Answers

SOURCE: no air or heat blowing from vents

if the fan is blowing this could be a problem with the climate controll switch that changes the direction of air from floor to defrost to vents, some are vacuum controlled through a vacuum operated mechanism that opens and closes a door in the vents which redirects the air to different places.

Posted on Jun 10, 2009

  • 1 Answer

SOURCE: 98 ford explorer AC isn't blowing out of the front vents

can't help you w/ fuse panel diagram-- but it may be your front blower motor door. sometimes they stick in the closed position. good luck!!

Posted on Jul 07, 2009

  • 5 Answers

SOURCE: Renault Clio Sport 182 Air Con and fan blower fault

I also have a 53 clio with climate control and the fan stopped working. After being quoted £104 by dealership I decided to have a go myself. Bonnet up, remove driverside scuttle cover. Unplug fan resistor 7701051272 (large plug with black wire to fan)remove securing screws and resistor. Dismantled casing and peeled away gel from soldered side of circuit board around mosfet transistor-desolder and remove. Mine was a N342AD 75344G but the nearest I could get was HUF75337P3 from Maplin £1.68. This was the wrong 'package size' but I managed.Close the clamp slightly (before)to hold transistor firmly and then insert transistor and solder. Reassemble. After I got an email from a scrappy QUOTING £20 if you don't fancy the messing about.

image_icon_name.gifIan

Posted on Aug 31, 2009

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1 Answer

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 .

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When I turn on the ac or the heater on my 1992 pontiac bonneville ssei supercharged it will now air to the windshield but when I change it to blow to me or my feet it won't blow any air. what coul


there is a paddle inside the sysem which moves to change the direction of the heat, i could be jammed or its actuator is broken or not getting pwer. if not it could be your switch is not working so the sigal to change position is not be received. first check all fuses are ok.

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1 Answer

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I assume you already checked the fuses?
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I have similar cars: 2002 Impala and 2005 Bonneville. I've had to replace the fan on the Bonneville.
If fuses OK, check the power to the blower fan under the assenger dash (right about where the passenger toes would be). You'll probably have to remove the kick panel from under the dash; couple screws maybe. The center wire of the blower should have 12+ volts. If yes, you probably need a blower fan. If it's the same or similar to the Pontiac, there will be the one plug, a rubber hose and 3 screws.

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1 Answer

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