Blower stop working normally (blow only half of what it's suppose to do) after a few minutes, no matter if it's ac or heat.

what sub model accord, v6 LX ,
manual or full climate control option??? guess full.
fuses not checked PCM scanned for DTC errors EVAC, hopeless/?
so car starts and runs sand drives ok, <<< not told that.
yes the AC brain on most modern cars is BCM brain controls
and the brain does control the AC compressor. if that is dead so be AC, THE COMPRESSOR CLUTCH, is run by PCM RELAY.
NOT TOLD OUTSIDE TEMPERATURE NOR COUNTRY../
HERE IS A LIST.
1: CHECK ALL FUSES FIRST, CAB AND ENGINE BAY ALL FUSE BOXES SKIP NONE.
2: CHECK IP CLUSTER FOR ERRORS ,ALARMS ERRORS OR LAMPS GLOWING OR IMMO LAMP SHOWS IMMO IS UNHAPPY, MODE.
3: ENGINE STARTS AND RUNS AND CAR DRIVES.?????????
4: HEAD LAMPS WORK KEY ON AND OFF. ,
5: OTHER ELECTRIC FAILURES OR JUST THE BLOWER ONLY?
6: SCAN THE pcM FOR ERRORS, AC IS CUT DEAD EVEN FOR ENGINE OVERHEATING OR OVERLOADED !!! OR IN LIMP MODE/
yah can't fix modern cars lacking a scan tool, no way./

bLOWER FACTS
PER THE SM BOOK REAL

THERE IS A BLOWER RELAY AND SOME FUSES. 12VDC SIDE.
FUSE 30 DASH
AND 21 HOOD, BOTH MUST BE GOOD. and fuse 12 V6
THE bLOWER gets GROUND FROM THIS
Audio-HVAC--Display Panel
l AND ITS BLOW POWER TRANSISTOR MODULE
SO WE KNOW THE TRANSISTOR IS off. IS CAUSE 1.
ONLY WHY REMAINS!!!!
YES THE CONTROLLER DOES NOT WANT TO RUN ANY DEAD BLOWER AND RISK ICE DAMAGE TO THE EVAP CORE.

THE Audio-HVAC Display Panel, READS MOTOR SPEED ACTUAL. speed (a kind blower tachometer wire)
IF SAY A INSECTS NEST JAMMED UP THE BLOWER FAN
THE AUDIO -HVAC, MODULE SEE THAT AND CUTS AC DEAD BY DESIGN AND HARD GOOD REASons/
the THE Audio-HVAC , has the ICE up sensor and monitors R134a
high/low switch and if wrong, tells the PCM to shut down its
Clutch solenoid to compressor ending all AC .
I am no sure what blower does.
but I can say this tell of blower works in heat mode or blower + no AC no HEAT mode. yes then the blower is not bad, nor the controller
what is wring is inputs to the controller are dead wrong
and not scanning the PCM after fuses is why you don't know.

l;earn now this works
Audio-HVAC
Display
Module
https://eautorepair.net/Marketing/Default.asp



not checking fuses first then scanning the PCm is why answers simple are not found.

like these and scads more.

Trouble Code: HVAC 12 (3.0L V6 VIN - Std)
A Problem in the Blower Motor Circuit

Trouble Code: HVAC 13 (3.0L V6 VIN - Std)
HVAC Control Unit Internal Error


Trouble Code: HVAC 14 (3.0L V6 VIN - Std)
An Open in the Evaporator Temperature Sensor Circuit (ICE Up preventions)

Trouble Code: HVAC 15 (3.0L V6 VIN - Std)
A Short in the Evaporator Temperature Sensor Circuit(ICE UP)

I think you have a "variable speed resistor" problem, it's overheating. It's an electronic device usually located near or attached to the AC motor blower that controls the fan speed. This is a common problem with aging AC blowers with electronic controls.

Here's a link to the blower motor resistor,usually they go bad causing you not to be able to use all speeds,it's located next to blower motor,two screws may hold it on.http://www.autozone.com/autozone/parts/2002-Ford-Taurus/A-C-Heater-Blower-Motor-Resistor/_/N-jhcdrZ91tag?filterByKeyWord=blower+motor+resister&fromString=search Here's a link to the blower motor.http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?fromSearchPage=true&pageId=0996b43f8036e0aa&partName=Removal+%26+Installation&partId=0996b43f8036e0aa

Sounds like the blower motor or the connection to it is failing.Next time it stops give the area below the glove compartment a good whack,if the blower does anything,change it.

hi ,look under your dash near the blower and find a 4 or 5 wire plug going in near the blower,unplug it and remove the screws holding it in place ,pull it out ,it will be about half a cigarette packet in size when youve got it out in your hand ,this is most likely your problem part ,its a heater resistor ,it controls your fan speeds,it should be a white chalky resistor or an alloy heat sink type ,they come in 2 ways as i've stated,phone a ford specialist junkyard or auto wrecker or a new ford dealer and give them the part number it has on it and your thunderbird specs or ID numbers and you should be able to locate a replacement without too much bother .
THANK YOU for using FixYa

I'm afraid you have the deluxe system,my friend. It has 2 electronic circuit boards that may be going bad. Very expensive unless you can find used or aftermarket.
I hope it's just the blower motor, but I had the other thing happen and I had to wire around it,losing my AUTO temp and blower control. don-ohio

Follow the wires from the blower motor back to the blower motor resistor, normally only a few inches away and held in by a 7 mm screw. Replace it

You need to have a look at your AC switch , dim and bright toggle switch and also the relay system on your fuse box and check for relays that might be heating up and the possibility of water ingress onto the fuse box which have been a vw problem for many years and if you dont find any problem there then start looking for electrical harnesses that may be chafed or broken and shorting out inside the harness but the fact that you can trigger it off points to a relay.

List of possibilities :
blower motor
resistors
switch(On/OFF)

The problem may be a faulty blower motor behind the heather core, or a problem with wirings.