No heat

Tiny
M_H_RITZEL
  • EXPERT
If you are refering to is the power then you can just remove the fuse. If the heater core is leaking, then you can bypass the heater core. Disconnect the lines going into the heater core and using a connection connect them together so the cooland still circulates.
Check out, how it works
then click on, cooling system
then click on, heater questions

how it works is on the left of the screen
there will be questions there that refer to heater core leaks
Was this
answer
helpful?
Yes
No
Tuesday, October 16th, 2018 AT 1:14 PM (Merged)
Tiny
SIXXXWBVMC
  • MEMBER
  • 1999 FORD EXPEDITION
  • V8
  • 2WD
  • AUTOMATIC
  • 113,400 MILES
1999 Ford Expedition
Heater in front vents are not as hot (just blows warm) as the rear vents (blows HOT).
I changed the thermostat.
Was this
answer
helpful?
Yes
No
Tuesday, October 16th, 2018 AT 1:14 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Have you had the blend door checked? Also, with the engine hot, running, and the heater on high, do both heater core hoses get hot?

Let me know.
Joe
Was this
answer
helpful?
Yes
No
Tuesday, October 16th, 2018 AT 1:14 PM (Merged)
Tiny
SHELLYW
  • MEMBER
  • 1999 FORD EXPEDITION
  • 4 CYL
  • 2WD
  • AUTOMATIC
We have replaced the radiator, heater core, thermastat but my heater blows cold air> what do we do know?
Was this
answer
helpful?
Yes
No
Tuesday, October 16th, 2018 AT 1:14 PM (Merged)
Tiny
DOCFIXIT
  • EXPERT
Blend door fault most likely controls or actuator Atuo or Mnaual Air?
Was this
answer
helpful?
Yes
No
Tuesday, October 16th, 2018 AT 1:14 PM (Merged)
Tiny
MIKECRABTREE
  • MEMBER
  • 1999 FORD EXPEDITION
  • V8
  • 2WD
  • AUTOMATIC
  • 126,000 MILES
When I trun my heater on I get no hot air. I have changed the thermostat and repalced coolent but still have no heat.
Was this
answer
helpful?
Yes
No
Tuesday, October 16th, 2018 AT 1:14 PM (Merged)
Tiny
RASMATAZ
  • MEMBER
Check the heater core if its clogged-up if not could be an air mix/blend/mode door problem and vacuum/actuators-Also if it has a heater control valve check that too.
Was this
answer
helpful?
Yes
No
Tuesday, October 16th, 2018 AT 1:14 PM (Merged)
Tiny
AFTERSHOCKGUY
  • MEMBER
  • 1999 FORD EXPEDITION
  • V8
  • 2WD
  • AUTOMATIC
  • 150,654 MILES
My heater works sometimes. It blowns cold air sometimes and hot air sometimes
Was this
answer
helpful?
Yes
No
Tuesday, October 16th, 2018 AT 1:14 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi:
Check the coolant level. It may be low. If it is full, let me know and we'll go from there.

Joe
Was this
answer
helpful?
Yes
No
Tuesday, October 16th, 2018 AT 1:14 PM (Merged)
Tiny
LEROY.A.LONEY
  • MEMBER
  • 1999 FORD EXPEDITION
  • 5.4L
  • V8
  • AWD
  • AUTOMATIC
  • 154,454 MILES
My wife has no heat in her vehicle. I have checked both lines going into the core and both are warm. But no heat inside. What could the problem be?
Was this
answer
helpful?
Yes
No
Tuesday, October 16th, 2018 AT 1:14 PM (Merged)
Tiny
WRENCHTECH
  • MEMBER
Warm? That may not be enough. Compare the temp with the upper radiator hose.
Was this
answer
helpful?
Yes
No
Tuesday, October 16th, 2018 AT 1:14 PM (Merged)
Tiny
LEROY.A.LONEY
  • MEMBER
Ok
Was this
answer
helpful?
Yes
No
Tuesday, October 16th, 2018 AT 1:14 PM (Merged)
Tiny
RICHARD STORY
  • MEMBER
  • 1999 FORD EXPEDITION
  • V8
  • 2WD
  • AUTOMATIC
  • 200 MILES
Enter your question.I have a 99 Expodition with triton engine great runner but the heater in front blows only cold air. Not sure why. Back heater works fine. Thanks!
Was this
answer
helpful?
Yes
No
Tuesday, October 16th, 2018 AT 1:15 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Check the blend door. Make sure the heater core hoses are getting hot. If only one does, flush the heater core.
Was this
answer
helpful?
Yes
No
Tuesday, October 16th, 2018 AT 1:15 PM (Merged)
Tiny
BUBBLES6785
  • MEMBER
  • 1999 FORD EXPEDITION
  • 210,000 MILES
My heater will not get warm all it does is blow out cold air
Was this
answer
helpful?
Yes
No
Tuesday, October 16th, 2018 AT 1:15 PM (Merged)
Tiny
ASEMASTER6371
  • EXPERT
Possible causes are thermostat stuck open, low coolant level and plugged heater core. The last one I want to address is the blend door motor. It is inside the car behind the radio and it fails very often. It is an electric motor that moves the mode door from cold to heat. A shop can check it for you to verify. If you hear clicking noises when you change from cold to hot, that most likely is the issue.

Roy
Was this
answer
helpful?
Yes
No
Tuesday, October 16th, 2018 AT 1:15 PM (Merged)
Tiny
WILLCOVER
  • MEMBER
  • 1998 FORD EXPEDITION
  • V8
  • 4WD
  • AUTOMATIC
  • 200,350 MILES
My heater only blows luke warm air. The coolant checks oiut ok and the blower works and I replaced the thermostat but it still only blows luke warm. What other areas should I check before taking it in for a reapir. Ki can live with this and its an old car so I dont want to spend a lot of money on this reapir. The air conditioner works well as does everything else on the car
Was this
answer
helpful?
Yes
No
Tuesday, October 16th, 2018 AT 1:15 PM (Merged)
Tiny
RASMATAZ
  • MEMBER
Check if the heater core is clogged-up and also the heater control valve if its functioning properly
Was this
answer
helpful?
Yes
No
Tuesday, October 16th, 2018 AT 1:15 PM (Merged)
Tiny
WILLCOVER
  • MEMBER
Thank ypu for your reply
Was this
answer
helpful?
Yes
No
Tuesday, October 16th, 2018 AT 1:15 PM (Merged)
Tiny
FORDLVR1998
  • MEMBER
  • 1998 FORD EXPEDITION
  • V8
  • 4WD
  • AUTOMATIC
  • 132,000 MILES
I installed a new thermostat. Hoses to and from heater core are quite warm to the touch. Blend door is operating. Still no heat. What can I check next?
Was this
answer
helpful?
Yes
No
Tuesday, October 16th, 2018 AT 1:15 PM (Merged)

Please login or register to post a reply.

Recommended Guides