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No heat already changed the thermostat

I changed the thermostat on my 1999 ford expedition 4.6 because no heat. now the engine light is on and still no heat

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Check vacuum hoses. There's one between engine and firewall at the passanger side that operates ur heater. This little creature dries up due heat expossure and cracks causing a vacuum leak that will trigger ur check engine light as well..

Posted on Jan 18, 2013

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SOURCE: 1999 Ford Windstar 3.8 no heat

If you have a knock or clicking noise behind the radio, it is the blend motor. The blend door is spring loaded and the gears in the blend motor are "stripped". The door is spring loaded so that the door is closed to the heater core. About 2 hours to replace and a lot of bending and stretching. You don't have to remove the dash, but all of the trim, radio, and controls will need to come out.

Posted on Mar 01, 2009

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SOURCE: 1998 ford expedition blinking overdrive light

This blinking light indicates a problem. You will have to have it scanned for trouble codes to find out
what it is.

Posted on Mar 29, 2009

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SOURCE: reset ems (check engine light) on ford expedition

Try to remove positive baterry terminal for 20 minutes and install it nack. That will reset your ECU and it will run little rought tilll learn new change in 02 sensor.

Posted on Feb 20, 2010

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SOURCE: The 4WD will not disengage on my 1999 ford expedition

hey well i have similar problem on my 2000 awd, it seems to get stuck on 4 all the time. when i turn it grinds and thumps like heck. anybody knows how to go about this prob?

Posted on Dec 29, 2010

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SOURCE: 1999 ford Expedition caliper removal

IT IS RUSTED ON GO TO YOUTUBE AND SEARCH
"Remove Rusted Brake Rotors"

Posted on Jan 16, 2011

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1 Answer

I have a 1999 ford expedition and it keeps over heating on me how do i find out what causes that?


Has the thermostat ever been changed ? Is the cooling system full ? Does the cooling fan work ? Is the check engine light on ? Ever have the cooling system flushed out ? The gauge in the instrument cluster could be wrong . How does the vehicle run ? If it doesn't run very well could have blown head gasket , That could cause a overheating problem .

Nov 16, 2015 | Ford Cars & Trucks

1 Answer

I have 1999 ford expedition and the alternator is overcharging and all lights are blinking


Have the battery tested and if its good check fuses. If its not that its a wiring issue.

Nov 09, 2015 | 1999 Ford Expedition

1 Answer

I changed the thermostat on my suv and still the heat is lukewarm.


manifold heat control valve may be only partially open..

Dec 18, 2013 | 1999 Ford Expedition

1 Answer

I changed the thermostat on my 1999 ford expedition and still no heat


Check to make sure your lower thermostat housing is not leaking. if so it will need replaced.

Jan 17, 2013 | 1999 Ford Expedition

1 Answer

I have a 2000 ford expedition and the heater blows air just not hot air or even warm air.. weve already changed out the thermostat, heater core, heater control valve and it still isnt working.. what could...


Check the vacuum hoses from the switch to the engine compartment. If you manually operate the heater valve on the firewall (follow the 5/8" hose) you will get heat.

Feb 08, 2011 | 2000 Ford Expedition

1 Answer

The heater works sometimes and sometimes it does not. I have replaced the thermostat twice in a month due to being told I could have purchased a malfunctioning one the first time. My heat came on and...


Your engine is overheating because the coolant is not flowing properly. If you have clogs in the cooling system changing the thermostat is not going help very long. Depending on what the material is that's causing the clog it will eventually prevent your new thermostat from working as designed. Buy a radiator flush kit and flush the system. If your heater core is clogged it may prevent heated water from entering it (that is where the heat is radiated from).

Jan 16, 2011 | 1999 Ford Expedition

1 Answer

1999 FORD expedtion with no heat in front nor back. Good water flow and the hoses are not very hot. The heat will be hot for about 5 to7 seconds and then get cold again. what do you think?


What is the engine temperature? It may be that the thermostat is stuck open and the engine is running cold.It may also be sometheing stuck in one of the lines that moves to block it when the flow starts.

Nov 07, 2010 | 1999 Ford Expedition

1 Answer

My ford expedition xlt is leaking coolant from behind the motor and over heating. i have already replaced the thermostat, and the water pump. i was told i may need to replace the freeze plug.


Could be one of the freeze plugs in the back of the block. You'd have to remove the transmission or motor to get to it. Also check the heater hoses at the firewall, the intake too. A mirror on and extension might help.

Apr 24, 2010 | 1999 Ford Expedition

1 Answer

Raditor over heating


change the thermostat first unless the radiator is leaking all the time. thermostat is located at the end of the upper radiator hose at the engine. do that first.

Aug 07, 2009 | 1998 Ford Expedition

2 Answers

2000 Ford Expedition Overheating


this may be a cluster,wiring or sending unit problem.ask your dealer how hot the engine was getting,with a scanner they can tell what temp the coolant is at.yes your temp gague is rising but is the engine even overheating ?

Nov 05, 2008 | 1999 Ford Expedition

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