Question about 1999 Ford Expedition

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Vehicle is running hot and no heat - 1999 Ford Expedition

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Check for leaks check your rad for leaks check your heater core for any leaks check all hoses clamps for any leaks change your thermostat it my be faulty old and sticking.

Posted on Aug 31, 2010

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1 Answer

Steam leaking from the under carriage


It could be due to the coolant pipe and hoses that go to the back if you have rear heat. If steaming, leaking and running hot I recommend that you don't drive the vehicle until the problem can be repaired or damage to the engine could occur.

Feb 16, 2013 | 2002 Kia Sedona

Tip

How to diagnose ALL vehicle NO heat problems


It is winter and you jump in your car start it up and turn the heater blower fan on.
You sit and wait...and wait.... NO HEAT !
Here are a few easy steps to help diagnose the problem:

1) After vehicle is completely warmed up, open your vehicles hood.

2) Grab a pair of gloves. Put them on, now put your hand with your glove on, on the TOP radiator hose. ( The top black radiator hose is the largest hose on the top of the radiator inlet running to the thermostat housing, in most vehicles)

3) Be careful NOT to touch ANY part of the engines cooling fan(s). Is the radiator hose HOT or COLD to the touch ?

If the hose is cold the easiest repair is to replace the thermostat. The thermostat helps regulate the engine temperature keeping it approximately 195 degrees Fahrenheit, and helps supply hot coolant to run through your vehicles heater core to keep you warm in the winter.

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1995 ford escort will not restart after driving on hot days until you wait 4 hours


You may want to replace your crankshaft position sensor. They tend to "open" the circuit when they get heated after they have begun to wear out.

Aug 16, 2012 | 1995 Ford Escort

1 Answer

My heat does not work properly


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when vehicle is cold remove coolant resevoir cap and fill with the bleed screw loose until coolant comes out of screw.Then tighten screw refit cap and run engine.
if unable to find bleed screw raise the front of vehicle as much as possible and top up coolant.

Jan 03, 2012 | Cars & Trucks

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1998 chevy blazer After the repair shop replaced the blown intake gasket, I have no heat from the heater. I took the heater hoses off and ran water thru the heater but still no heat


Is the vehicle running at normal temperature..If its running cooler than normal,then it might be the thermostat..Feel the upper radiator hose after the vehicle hot..It should be hot to touch

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Temp gt hot blowing cold air would this be a thermostat or water pump


Maybe a thermostat..or the heatercore clogged up..If the vehicle runs hot pretty quick then its the thermostat stuck closed..If the vehicle is not running hot,but you have no heat then the thermostat will be stuck open or the heater core not circulating

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What is a Sensor Heater Circuit?


I suspect you are talking about the O2 sensor heated circuit

in order to make the vehicle run as efficient as possible, the O2 sensors need to be HOT

while the exhaust is hot, it still does not get the O2 sensors hot fast enough

therefore they heat them on start up with the heater circuit

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93 merc villager van


You have an air pocket trapped in the cooling system. This is pretty common on this vehicle due to the fact the heater core sits higher in the vehicle than the top of the radiator.
To correct this jack the front of the vehicle up or park it on an incline. Remove radiator cap then run it until hot,run rpm up to about 1500 and watch bubbles in radiator then top it back up with coolant until u see a steady flow thru radiator.

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1 Answer

No rear heat in pontiac montana '99


Warm up vehicle, then access heater pipes that run to rear of vehicle.  they should be HOT. if not you have  a circulation issue.  IF they are hot, then the blend door is not in the correct position.  this door directs air across a hot or cold core to create the correct air temp. check and update me.  

Jan 05, 2009 | 1999 Pontiac Montana

1 Answer

1989 maxima no heat in vehicle


Put your hand on the heater hoses as close to the fire wall as possible find out if both hoses are hot.Do this when the vehicle is cold allow car to heat up with heater open and running.If both equaly hot then heater core at fault.If different check water supply to cold hose.

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