Question about 2005 Mercury Montego
Posted by Anonymous on
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Posted on Jan 02, 2017
Since your blower is working and it is a heat issue,thats where we'll
start,First thing is have you checked the coolant level in the radiator when
engine is cold,make sure it is filled to top,next verify you have coolant in
reserve ,Start your van and get it up to normal operation temperature,If your
heat gauge on the dash works correctly it should be 190 degrees,Now lift the
hood and locate the two heater hoses going into the heater assembly at the fire
wall,Both hoses should be hot to hold on to,if both are hot and no heat inside
your problem will be the blend air door in heater assembly.
if neither hose is that hot you need to replace the thermostat in the engine to get it up to 195 degrees.
if one hose is hot and one is luke warm then the heater core is blocked and to blame. hope this helps you.
Posted on Jan 05, 2010
SOURCE: Where is the Blend door
Both are located behind the dash. You have to remove the dash to get to it. You might want to change the heater core while you are back there too. Some will tell you to pull a few bolts and wedge it open just enough to get back there and remove it. If you value how your cars dash looks I would advise against this. Good luck.
Posted on Apr 09, 2011
Tips for a great answer:
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Fig. Remove the floor air outlet duct extension (1) from the floor duct (2)
Disconnect the electrical connection at the blend door actuator (#10 in pic below).
Fig. Blend door actuator and related components
Remove the blend door actuator mounting screws from the HVAC module.
Remove the blend door actuator as an assembly with the actuator cam.
Fig. Remove the blend door actuator mounting screws from the HVAC module
Picture of actuator:
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