heater problem with heater control valve vacuum line

Asked by May 16, 2016 at 04:56 PM about the 2001 Ford Explorer Sport Trac 4WD Crew Cab

Question type: Maintenance & Repair

ok, here is the history
replaced water pump
replaced thermostat
put it back together and no heat.

Noticed I'm not getting any vacuum to the heater control valve (HCV).
flushed the heater core, and put it back together. Had vacuum and heat for
about 5 minutes. then HCV opened (no vacuum) and no more heat.  

Read some other replies here, and seems to be some experienced Ford
fans. Help.

5 Answers

13,005

AS you know...Most Ford explores have a vacuum operated valve in the heater line to the heater. It is located on the passenger side near the back of the engine in one of the heater lines. You should be able to move valve with your hand. Once engine is up to temperature, feel both sides of heater hose before and after valve. it should be hot on both sides if water is flowing. If not move valve and see if it gets hot on both sides. If that it is the problem, just prop valve open until you can replace it. NEXT...I would also check your BLEND door , Fords are known for BLEND DOOR issues

1 of 1 people found this helpful.
110

You have air in the heating system. WITH THE ENGINE COLD... Take the coolant resvoir cap off. Turn the engine on. Let it get hot by touching the upper radiator hose. If its hot the thermostat is open. Grab a shop rag and carefully squeeze the upper raidiator hose until you dont here bubbles or gulps coming from the coolant resevoir. This will bleed the air out. Every so often get in and rev the engine to get the water pump to circulate the coolant and air throughout the system while your doing that turn the heat on and place your hand by vent to feel the hear. When you grab the upper hose bubbles should come from the resvoir. Remember once the resivor cap is off its vented to the atmosphere so its not going to overheat or hurt you but DO NOT TAKE THE CAP OFF THE RADIATOR JUST THE RESIVOR.

73,655

I agree the cooling system may need to be bled from air,

thank you.

will give it a try.

Your Answer

Explorer Sport Trac

Looking for a Used Explorer Sport Trac in your area?

CarGurus has 1,774 nationwide Explorer Sport Trac listings starting at $1,300.

ZIP:

Ford Explorer Sport Trac Experts

  • #1
    Wayne Foy
    Reputation
    1,030
  • #2
    Tracy Hooks
    Reputation
    420
  • #3
    70Duster
    Reputation
    350
View All

Related Models For Sale

Used Ford F-150
2,246 Great Deals out of 179,996 listings starting at $1,300
Used Ford Explorer
813 Great Deals out of 62,574 listings starting at $1,000
Used Nissan Frontier
336 Great Deals out of 21,474 listings starting at $1,796
Used Toyota Tacoma
595 Great Deals out of 42,094 listings starting at $1,995
Used Ford Ranger
164 Great Deals out of 5,460 listings starting at $1,499
Used Ford Explorer Sport
205 listings starting at $2,500
Used Chevrolet Silverado 1500
2,098 Great Deals out of 167,326 listings starting at $1,888
Used Dodge Dakota
115 Great Deals out of 3,697 listings starting at $1,700
Used Ford Escape
1,038 Great Deals out of 85,211 listings starting at $1,288
Used Dodge Ram 1500
355 Great Deals out of 10,813 listings starting at $1,199
Used Chevrolet Avalanche
174 Great Deals out of 4,905 listings starting at $1,200
Used Toyota Tundra
477 Great Deals out of 31,847 listings starting at $1,999

Used Cars For Sale

2010 Ford Explorer Sport Trac For Sale
4 Great Deals out of 132 listings starting at $11,990
2009 Ford Explorer Sport Trac For Sale
4 Great Deals out of 48 listings starting at $9,995
2008 Ford Explorer Sport Trac For Sale
6 Great Deals out of 193 listings starting at $5,995
2007 Ford Explorer Sport Trac For Sale
15 Great Deals out of 478 listings starting at $2,850
2005 Ford Explorer Sport Trac For Sale
8 Great Deals out of 241 listings starting at $3,000

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.