Question about 2003 Ford F250 Super Duty Crew Cab

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2003 ford f250 no heat at idle

Installed water pump. no blocking of heater core

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

emissionwiz
  • 75077 Answers

SOURCE: i have a 2000 ford windstar no heat still

the problem (which is all to common on Windstar and Explorer) is the air temperture control blend door actuator motor is defective, this motor is what moves a door that gives hot, cold or a blend of hot and cold air blend to give u the desired outlet air temp.

Posted on Feb 27, 2009

Dissolu
  • 221 Answers

SOURCE: Heater Core coolant flow 97 F250 Powerstroke

The one that comes out directly from the engine block

Posted on Jun 23, 2009

john631068
  • 172 Answers

SOURCE: 2003 FORD F-350 HAS HEAT THEN NO HEAT HAVE CHANGED

If you are sure all the things you fixed are working good then I would say its the heater control valve around $30 and looks like this hope this helps

6ac94d7.jpg

Posted on Nov 20, 2009

  • 244 Answers

SOURCE: my 2002 ford taurus has

I have the same vehicle...check to see that the heater control valve is opening...usually mounted on the fire wall and has about a 5/8" inch hose that come from the T-stat....it esentially bypasses the heater core when the heat is not selected. The hoses going through the fire wall on the left (passenger) side of the vehicle are strictly for the heater - it "heat" is selected and those hoses are cold - based on what you've already done, the next conclusion would be the heater control valve...could be something as simple as a disconnected vacuum line.

Good Luck,

Mike...

Posted on Nov 29, 2009

  • 1 Answer

SOURCE: i replaced heater core on my 1995 ford pickup f250

how do I change the heater core on my 1992 ford ranger
it had a short and cot on fire, put out and drove off, need to replace

Posted on Dec 10, 2009

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1 Answer

NO heat at idle??


Your heater core is partially blocked. I know you flushed it, but you can't get all of the sediment out and make it flow under low RPM because of the blockage caused by scale and oxidation caused by minerals in water/coolant. Try to flush it again using CLR, and if that doesn't work, you'll most likely have to replace it. Hope this helped!

Dec 09, 2014 | 2003 Honda Accord 2.4 LX

1 Answer

Heater will not blow out hot air in my 1988 ford F250. Thermostat and hoses are all good. Is there a sensor that may be causing the problem and where is it located?


Hello! There isn't a sensor that would disallow heated water to circulate through the heater core...If the temperature gauge rises to normal...And the upper radiator hose is hot along with the lower hose ...I can conclude water is circulating through the block...Question then becomes; Is it circulating through the heater core? And the answer to that is, I don't think so...With the heater control turned on high feel the outlet heater core hose (facing engine it's the one on the left) if it feels cold or not as hot as the inlet then one of two items are at fault...#1...The Plenum assembly, which the heater core sets in has an open vacuum line...#2...The heat control valve cable or the valve itself is not opening...See picture of valve below...It is on the firewall...Let me know if heat is passing through the heater core...If hot water isn't passing through the core and the valve is opening than the core itself is blocked...send a comment...Guru...Saailer

saailer_214.jpgMOTORCRAFT Part # YG229...$20

Oct 09, 2011 | 1988 Ford F 250

1 Answer

My 2000 ford f250 doesnt heat. checked gates on heater core and blower assembly. every gates seems to be working properly. checked to see if truck has a heater contro valve. couldnt find it. checked the...


Have you felt the heater hoses to see if they are both equally hot? It would indicate there is water flow. If you do not seem to have flow, disconnect one heater hose at the core and the other at the block and take a water hose and force water into the long hose you removed at the block.

Then if there is no flow it is either a clogged heater core or a control valve, or a block circulation problem. The Valve shown at PartsGeek.com costs $13.93 and is part#5337-07026431 in a Four Seasons brand. It is Electrically controlled and appears to fit inline with the hose.

There are differences in part numbers for other Year models and the others are for a 5/8 hose. If it is electric it may have a separate fuse. Check an Owners manual or with the autoparts counter. There is also reference to a Super cooling package and differences in Diesel applications. Now if you have noticed a Vacuum heater control, the knob to vary the heat breaks and splits. You turn the knob and the shaft behind it does not move.

I would try to check the Control knob on the dash first, as the Electric valve may just be for off and on and the Control knob regulates the blend doors. Turn the shaft behind the knob with a pair of pliers and see if the heat returns.

Feb 04, 2011 | 2000 Ford F250 Super Duty Crew Cabs

1 Answer

Where is heater control valve on 2003 dodge ram pick up


THERE IS NO HEATER CONTROL VALVE ON THE WATER HOSES. NEW HEATER CORE. INLET LINE right before heater core hot, outlet after core look warm. Burped cooling system 5 times with engine at operating temp. Installed homade burp VALVE right after heater core outlet(high part of hose). Still no heat. Removed water pump, impeller still in good shape not stripped off shaft. Removed heater core hoses flushed water thrue the connections on the block to the water pump INLET and outlet. flushed water thrue heater core and hoses. Going to put it back togeter today. Used known good gauge to check water temp for operating temp in test. 195 f

Oct 22, 2010 | 1997 Dodge Ram 1500 Club Cab

2 Answers

Heater blows cold whenever truck is on idle.


check fluid level must be low on coolant or air in system.

Feb 02, 2010 | 2000 Ford F250 Super Duty Crew Cabs

1 Answer

My heater on my F350 does not seem to be working properly. When I take my foot of the gas....the heater pumps cold air. What is my problem?


if the heater fan is sill blowing then the only thing is maybe the water pump is faulty. Feel the hoses if you can get to them for the heater core when its idling.. If one cools down when you idle and heats up when your reving up the motor I would suspect a coolant flow issue, I have seen heater cores clog or become restricted so reving the motor would push more hot water thru You may have a control valve on one of the heater hoses going to the motor that may not be fully opening .
Now it they are both hot and stay hot then I would heater box as being the issue, I wouldnt suspect the control as being at fault.

Dec 01, 2009 | 2003 Ford F350 Super Duty DRW SuperCab

1 Answer

No heat is there a fuse 2003 f250 is there a fuse for heater


i don't know realy if there is a fuse (though i doubt it) but issues with heatting may be this will help.

If the carpet under the heater core is damp, or if antifreeze vapor or steam is coming through the vents, the heater core is leaking.
Remove it and install a new unit (most radiator shops will not repair a leaking heater core.
If the air coming out of the heater vents isn't hot, the problem could stem from any of the following causes:
  • The thermostat is stuck open, previnting the engine coolant from warming enough to carry heat to the heater core. Replace the thermostat.
  • There is a blockage in the system, Preventing the flow of coolant through heater core. Feel both heater hoses the firewall. They should be hot.if one of them is cold, there is an obstruction in one of the hoses or in the heater core,or the heater control valve is shut. Detach the hoses and back flush the heater core with a water hose. If the heater core is clear but circulation is impeded, remove the two hoses and flush them out with a water hose.
  • If flushing fails to remove the blockage from the heater core, the coremust replaced.

Nov 27, 2009 | 2003 Ford F250 Super Duty Crew Cab

1 Answer

Heater not working (no heat)


If u have issues with heatting may be this will help.

1- If the carpet under the heater core is damp, or if antifreeze vapor or steam is coming through the vents, the heater core is leaking.Remove it and install a new unit (most radiator shops will not repair a leaking heater core.

1 - If the air coming out of the heater vents isn't hot, the problem could stem from any of the following causes:
  • The thermostat is stuck open, previnting the engine coolant from warming enough to carry heat to the heater core. Replace the thermostat.
  • There is a blockage in the system, Preventing the flow of coolant through heater core. Feel both heater hoses the firewall. They should be hot.if one of them is cold, there is an obstruction in one of the hoses or in the heater core,or the heater control valve is shut. Detach the hoses and back flush the heater core with a water hose. If the heater core is clear but circulation is impeded, remove the two hoses and flush them out with a water hose.
  • If flushing fails to remove the blockage from the heater core, the coremust replaced.

Nov 19, 2009 | 2003 Ford F250 Super Duty Crew Cab

1 Answer

Heater Core coolant flow 97 F250 Powerstroke


The one that comes out directly from the engine block

Jun 23, 2009 | 1997 Ford F250 SuperCab

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