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Ford windstar problems

98 windstar....if i turn on my heater it blows hot for a while then blows cold if i shut it off then back on its hot agin this just started out of nowhere today no worning

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  • 195 Answers

Can't be 100% sure without checking the van myself, but sound like a vacuum leak in the HVAC unit or a defective HVAC unit in itself. Even modern vehicles sometimes still use a vacuum pump and valves to operate the traps the take care of temp control, vent position, etc. A very small leak of vacuum would make the traps slowly return to original position when the pump shuts off, as normally the vacuum will keep the trap there until the vacuum is released. So a small leak would let the vacuum get released over time when no more vacuum is applied by the pump. Although i must warn you that just getting the HVAC unit out of the dash is a major job, let alone taking the HVAC apart to inspect and test... So you might want to either just replace it with a new one without testing, or have some else take everything apart and do it for you. Hope this helps :)

Posted on Dec 31, 2013

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Posted on Jan 02, 2017

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SOURCE: HEATER DOES NOT STAY HOT IT STARTS THEN IT GOES COLD

Check radiator fluid level. The heater core sets higher than the engine. If fluid gets low, air bubbles will go to the highest point. The heater core. Check temperature guage. Is engine warming up to normal range? If not change the thermostat. Also check radiator cooling fans with engine warm.
On my car if I set the heater control on anything other than "vent" both cooling fans come on and the engine will not warm up. (still haven't figured that one out) I just run the heater in "vent"

If heater warms up when engine is held at high idle(2000rpms) then cools down at idle, you most likely have air traped in the system.

Posted on Oct 11, 2008

  • 217 Answers

SOURCE: '98 S-10 heater blowing cold air - not hot air

will the air flow switch from floor to the mid to defrost? if so then we have a problem with the tempature door actuator. easy to replace just in tight place. Keep me posted for more help or if this was any help thanks

Posted on Jan 31, 2009

  • 59 Answers

SOURCE: heater

Likely it has more to do with the door that controlls the airflow. Which should be operated by vacum might check and make sure all thevacum lines are plugged in.

Does the gauge in the car show it warms up?

Posted on Feb 24, 2009

localwonder
  • 6784 Answers

SOURCE: heater is blowing but its cold air not hot air 2000 expedition

Make sure the heater core is in the open position by using the shut off valve and turning it to open. next, you may have a malfunction in the direction door the directs the air flow in the dash. a lever may have become lose or separated. may be a bad servo motor not directing the door to move to the heater position. i would start by checking that shut off valve first on the heater core.

Posted on Mar 13, 2009

Mike258
  • 1498 Answers

SOURCE: my heater only blows cold air-'98 ford explorer

Hi Bri,

That is usually the first symptom of low coolant. Not enough water in the system to circulate through the heater core. Has it been running hot?

Check the coolant level in the radiator

Best regards,
Mike

Posted on Sep 23, 2009

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1 Answer

The heater on my 98 ford expidition blows hot air at first and then blows only Luke's warm. If I shut heat off and turn back on it will blow hot and then turn Luke warm why


-Sounds like the system is clogged or the on off valve is not open
properly.
-Check the valve and flush the system. It should be good to go.

Good luck

Mai

Nov 22, 2016 | Ford Cars & Trucks

1 Answer

It just blows cold air. no hot air


First, make sure your coolant level is full. After spending some time looking around you probably have a shut off valve in the engine compartment. See if you can locate 2 black(sometimes red) heater hoses, about 1 1/4 inches in diameter, coming from the firewall on the passenger side. The heater control valve is located inline with the hoses. It turns on and off the flow of hot water through the heater core which radiates heat in your passenger compartment. Check with your parts house to verify this by looking up the control valve.

Dec 26, 2014 | 2001 Ford Windstar

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Blower working no heat coming out


Check the voltage coming to blower resistor with ohmmeter for continuity!

Jan 03, 2014 | 2003 Ford Windstar

1 Answer

I have a 98 Ford windstar 2.8 litter. v6 the dash tempature goes to where it suppose to be but when i turn on teh heat I have no heat, just cold air. Is this a cuse of teh thermastat staying open all teh...


no the thermostat must be working or your engine would not heat up, check to see if your heater hoses are hot if only one is hot you need a heater core, but check your coolent level if the van gets low on coolent it will not let any get to the heater thehope engine keeps it all to keep the engine cool....hope this helps

Nov 13, 2010 | 1998 Ford Windstar

1 Answer

Our heater takes about 20 mins to blow warm air, and then if we are stopped at a light and the engine is idling it gets cold. Also, in the summer when we turn on the a/c it blows hotin the front and cool...


always check the coolant first, then feel both heater hoses to see if they are equally hot.
if one hot and one cold, then the heater core is clogged
if both hot then you have a blend door problem.
on the a/c there's some time a rear unit that blow cool air even the front does not

Feb 26, 2010 | 2001 Ford Windstar

1 Answer

The heater only blows hot air sometimes


it sounds like a bad blend door motor.these are controlled electrically and not with a cable like older vehicles did.

Oct 27, 2009 | 1999 Ford Windstar

1 Answer

Heater making noise and not blowing hot air.


You need to replace the temp actuator.

Apr 08, 2009 | 2001 Ford Windstar

1 Answer

Ford Windstar SE, 3.8L V6, 1999, front seat heat/defrost is cold


the blendor actuators strip out the gear inside the actuator cases on these all the time. replace the actuator.

Mar 10, 2009 | 1997 Ford Windstar

1 Answer

No heat - ac stays on blowing through defrost vents


If you have the heater directed to the windshield, the AC will turn on. Move the control away from defrost.

Feb 01, 2009 | 1998 Ford Windstar

1 Answer

Clunking noise


The unit in the back has its own heater core. That's what i thought the clunking was.It has to clunck to go into heating mode.It shuts off the airconditioner The clunk noise just gets louder with age because the strip around the door wears off. The unit in the front has it's heater core is underneath the glove box real hard to get to. In other word's it has two heater cores. That's why i suggested just reversing the hoses and just flushing till you could afford heater core replacement.
God Bless Greg

Nov 25, 2008 | 2003 Ford Windstar

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