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Heater not working?

Tiny
MARGIEV
  • MEMBER
  • 1 POST
  • 2004 FORD EXPLORER
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 160,000 MILES
1-my abs light is on
2- my heater blows cold air & makes a ticking sound only when I turn it to heat, the ac was working fine.
Please tell me or give me an idea of what this problem is and how may I repair it.
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Tuesday, April 7th, 2020 AT 11:35 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
As far as the ABS light, chances are there is a sensor that is bad at one of the wheels or the wiring is damaged. Check that first. If you find nothing, have the computer scanned to see if it will identify where the problem is coming from. Most parts stores will do it for free.

As far as the heater, it sounds like the blend door is stuck. It is the vent door that determines if you get heat or AC into the car. If it is stuck in the AC position, you won't get heat.
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Tuesday, April 7th, 2020 AT 11:35 AM (Merged)
Tiny
CWE909
  • MEMBER
  • 14 POSTS
  • 2004 FORD EXPLORER
  • 110,000 MILES
Fan motor works, turn switch to heater no hot air. Both heater hoses under hood are hot. Dont know ig gate is not switching or something else wrong. Any ideas?Ought maybe circuit possibly bad. Turn knob for heat rotates very easy thanks and God Bless!
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Tuesday, April 7th, 2020 AT 11:35 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
This can be a couple of things. You have a water valve item 12 in pic see if is passing water through it so it will be hot both sides. Then there are temp actuators on LH (shown second pic) and Rh they may not be working. But pull the hvac fuse for 60 seconds with key then reinstall sometimes these reset. Otherwise they may not be working.
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Tuesday, April 7th, 2020 AT 11:35 AM (Merged)
Tiny
WITHOUTXREASON
  • MEMBER
  • 1 POST
  • 2004 FORD EXPLORER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 78,000 MILES
Having a heater issue obviously. I have a 04 explorer and when I turn my heater on I get air flow but its cold air and there is a tapping sound behind the air conditioning/heater control panel when I turn the thermastate to red (heat). The sound goes away when its turned to blue (cold). Any ideas what that can be?
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Tuesday, April 7th, 2020 AT 11:35 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
You have a stuck or damaged blend door. It is what sends the air either past the heater core or the AC. If it isn't opening properly, you won't get heat or AC based on what position it is stuck in.
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Tuesday, April 7th, 2020 AT 11:35 AM (Merged)
Tiny
IVAN BROOKS
  • MEMBER
  • 2 POSTS
  • 2004 FORD EXPLORER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 125,000 MILES
My heater is not putting out. The blower is working, but no heat.
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Tuesday, April 7th, 2020 AT 11:35 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
With the engine running, hot, and the heater on, feel both heater core hoses. Both should be hot. Let me know what you find.

Joe
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Tuesday, April 7th, 2020 AT 11:35 AM (Merged)
Tiny
IVAN BROOKS
  • MEMBER
  • 2 POSTS
Yes the hose were hot.
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Tuesday, April 7th, 2020 AT 11:35 AM (Merged)
Tiny
STEVE BAILEY
  • MEMBER
  • 1 POST
  • 2004 FORD EXPLORER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 140,000 MILES
My heater isn't working. I think the air mixture door isn't opening. Is this something an avg car guy can fix? Is so, how?
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Tuesday, April 7th, 2020 AT 11:35 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
They are a pain because it is near the heater core and tough to get to. If you are sure the blend door is the problem, follow the cable to it and watch to see if it is working.

Also, make sure the engine is warming up to normal operating temp and both heater core hoses are getting hot. If both are hot, then chances are the blend door is the problem. If only one hose is hot, then chances are the heater core is plugged.

One last thing (simple) make sure the coolant is full in both the radiator and overflow. Only open the radiator when the vehicle is cold.
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Tuesday, April 7th, 2020 AT 11:35 AM (Merged)
Tiny
SAMSON01
  • MEMBER
  • 1 POST
  • 2004 FORD EXPLORER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 50,000 MILES
Last week I took my explorer in to the shop for a clicking noise under the dash. They told me it was the Ac actuator and replaced it. Now I have no heat. The heat worked perfectly the day it was taken in, when I picked it up, there was no heat. Now they want to charge me over $500 to fix it and they say it is not covered under waranty. They say there is no way that they could have broken it. I just feel like they are hosing me. Is this just some crazy coinsidence?
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Tuesday, April 7th, 2020 AT 11:35 AM (Merged)
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Sorry !
Since we know what is the problem I would suggest getting another opinion
check with another shop for an opinion where they can check it physically for you and tell you what is happening or happened
best of luck
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Tuesday, April 7th, 2020 AT 11:35 AM (Merged)
Tiny
WKMROLDAN
  • MEMBER
  • 1 POST
  • 2004 FORD EXPLORER
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 89,000 MILES
My heater is not working, only cold air comes out and as soon as I move the knob to red (hot) a clicking noise starts, it won't stop unitl I move the knob to blue (cold).
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Tuesday, April 7th, 2020 AT 11:35 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
IT sounds like the blend door is sticking. The blend door is a vent door that opens and closes to allow either AC or Heat to enter the vehicle. If stuck in the wrong position, you will get cold air all of the time. The blend door is located in the HVAC system near the heater core.

Let me know what you find.

Joe
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Tuesday, April 7th, 2020 AT 11:35 AM (Merged)
Tiny
JFAGAN
  • MEMBER
  • 2 POSTS
  • 2004 FORD EXPLORER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 65,000 MILES
My 2004 Ford Explorer and my heat does not work I turn it on but it only blows cold air. Also when I take it off cold to turn the heat up it's starts making a ticking sound like something is knocking? What is this problem? When I turn it back to the air, the ticking noise sto
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Tuesday, April 7th, 2020 AT 11:35 AM (Merged)
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Need a new blend door actuator
*****************************************
need manual CHECK IT @
https://www.2carpros.com/kpages/auto_repair_manuals.htm
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Tuesday, April 7th, 2020 AT 11:35 AM (Merged)
Tiny
BBFOOSE
  • MEMBER
  • 1 POST
  • 2004 FORD EXPLORER
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 49,000 MILES
I understand that when you turn on the heat from warm to cold, that a switch/baffle/something opens up and allows hot air from the engine to come into the car. At some point last year when turning the knob, I started to hear a rattle in that piece as it was moving back and forth and then a louder pop as it went into a fixed position. Unfortunately that position is 'cold' - now winter approaches.

Is this an expensive fix? Difficult fix?

Please advise before I arrange a repair.

Thanks so much!
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Sunday, September 27th, 2020 AT 11:32 AM (Merged)
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
If it is just the actuator it shouldnt be too expensive. But if somehting is wrong with the door (pop sound) then the dash will have to come apart and that will start to get pricey
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Sunday, September 27th, 2020 AT 11:32 AM (Merged)
Tiny
JAYNELLO
  • MEMBER
  • 1 POST
  • 2004 FORD EXPLORER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 50,000 MILES
2004 explorers heater wont operate
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Sunday, September 27th, 2020 AT 11:32 AM (Merged)

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