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Posted on Jan 02, 2017
Starting with the basics, check the fuse for the blower motor. If it's blown and you replace it and all is fine then you can write it off as a fluke. If it blows right away or soon after you've got a short or something somewhere. If the fuse is ok then the problem is most likely the blower motor resistor or the blower itself. There is a chance it could be a module, wiring, etc aso...
Posted on Sep 16, 2008
Sounds like the air "blend" door might be inoperable. This door opens and closes a specified amount to regulate the amount of either cooled or heated air, as requested by the climate control unit. If the door is continually in the position which is bypassing the heater core (cold setting), the air will not get warm regardless of the condition/operation of the heater core. I'd suggest having this component checked.
Posted on Nov 28, 2008
SOURCE: Front Blower
ok, missed the part about the rear ac working, the part that causes this is called the air temperature control blend door actuator motor, it is an electric motor driven gear drive that moves the plastic door inside the air ducking to mix or shut off the hot or cold air from the ac evaporator core or the heater core, you will need to replace it.
Posted on Sep 03, 2009
Testimonial: "Great thanks that could be my problem. Is the motor by the inside coil"
the computer that controls the deflector motor are not responding and opening the door for heat, I'm sure you have climate control,check the temp setting sensor to the computer input first
Posted on Nov 01, 2009
SOURCE: 2003 mercury grand marquis LS
The blend door is stuck in cold position. That usually happens because the blend door actuator has failed.
You will need to test and replace the blend door actuator.
To replace the actuator you will need to take apart the dash and remove completely the instrument panel,d isconnect the connector, remove the four screws, remove the temperature blend door actuator and replace it.
The replacement is not a job for beginners, since you have to take apart the dash to access the actuator.
Posted on Nov 18, 2009
Tips for a great answer:
Oct 28, 2012 | 1998 Oldsmobile Bravada
troubleshoot this types of problem,click the link below :---
Car heater blowing warm, but not hot air?http://schematicsdiagram.blogspot.com/2011/12/car-heater-blowing-warm-but-not-hot-air.html
Engine Overheats and heater blowing cold?
Heat blows cold on drivers side and hot on passenger side?
No heat on car? http://technoanswers.blogspot.in/2012/02/no-heat-on-oldsmobile-silhouette.html
Heater blows intermittently and temp gauge goes erratic?
Heater blows cold?
Heater/AC blower motor not working?
A/C, heater, defroster fan, not working? http://technoanswers.blogspot.in/2012/02/ac-heater-defroster-fan-not-working.html Heater problem?
This will help.Thanks.
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