MY HEATER WORKS BUT ON BLOWS OUT AT A LOW ...

1998 Mercury Mountaineer

Tiny

carlosfernandez

October, 17, 2012 AT 1:07 PM

My heater works but on blows out at a low setting weather in set it to high or low but my rear one works just fine

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9 Answers

Tiny

KHLow2008

October, 17, 2012 AT 1:27 PM

Can you please rephrase your question?

Tiny

carlosfernandez

October, 17, 2012 AT 1:35 PM

When I turn on the heater it blows out as if it is on the lows setting when I turn it up it still blows out low. My rear unit blows out high and low.

Tiny

carlosfernandez

October, 17, 2012 AT 1:39 PM

While I drive the faster I go it seems to blow out a little faster but really no change. I can only feel it when I put my hands on the vent.

Tiny

KHLow2008

October, 17, 2012 AT 1:50 PM

The air flow is low. If the blower motor noise changes when setting is increased it means air restriction in the air flow circuit. Check the cabin filter if equipped.

Tiny

carlosfernandez

October, 17, 2012 AT 2:11 PM

I will check now and see if that is the problem thanks for the response

Tiny

carlosfernandez

October, 17, 2012 AT 2:29 PM

No cabin air filter. The noise cant tell any different

Tiny

KHLow2008

October, 17, 2012 AT 8:26 PM

Since the blower fan motor is not responding to the control, it could be a failing fan motor, a fault with the blower motor switch controller.

Is your HVAC system manual or automatic?

Tiny

carlosfernandez

October, 18, 2012 AT 4:24 PM

Not sure, I tested my power to the blower and it is getting power if that helps.

Tiny

KHLow2008

October, 18, 2012 AT 7:05 PM

Automatic means the control panel has a function for Auto.

Seems the notification has a problem and I am not being nootified of any replies.

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