Why does my heat cut off and on and when it does work the heat only blows hot on vent?

LILMAMMAPATINO

MEMBER
1998 FORD TAURUS
186,000 MILES

I asked about my heat when I turn it on its hot for a minute then gets cold. You said to check the air blend door. My husband hasn't had a chance to check it yet but I noticed the heat blows hot when you put it on vent but now it cuts off and on no matter where you set it. Won't come on at all sometimes. Could that still be the air blend door? When it cuts off neither the heat or a/c work nothing comes on at all.

5 Replies

LILMAMMAPATINO

MEMBER
2 POSTS

It doesn't cut off and on anymore now it doesn't work at all, the heat or the a/c

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Saturday, October 29th, 2011 AT 4:53 PM

JACOBANDNICKOLAS

MECHANIC
108,170 POSTS

Are you dealing with a fan problem or heat issue?

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Wednesday, November 2nd, 2011 AT 5:09 PM

LILMAMMAPATINO

MEMBER
2 POSTS

First it was the heat now its a fan problem

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Thursday, November 3rd, 2011 AT 8:57 PM

RASMATAZ

MECHANIC
75,992 POSTS

Possibilities here could be the blower motor itself, blower relay and blower switch-

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Thursday, November 3rd, 2011 AT 9:13 PM

JACOBANDNICKOLAS

MECHANIC
108,170 POSTS

As raz said, it could be a few things for the fan motor. Start by checking if there is power to it. If there is, replace the motor. IF there is no power, check fuses and work your way back from the motor to see where power is lost.