Question about 2000 Ford Expedition

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My heat never gets hot it gets lukewarm then cool, return hose doesn't get hot either. What could be the problem ?

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Does the gage raise up to the middle of the dial? If not its probably the thermostat needs replacing

Posted on Nov 12, 2010

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Radiator goes into the overflow reservoir, but it doesn't get sucked back into the system when it cools


If the radiator pressure cap is good and is sealing correctly then two possible scenarios present.

The first is the return valve of the pressure cap is providing too much resistance so instead of the expanded liquid being drawn back in as the engine cools, all the hoses shrink a little by the equivalent of the expelled coolant.

The second is the possibility of a slight leak of combustion gas into the cooling system causing coolant to be displaced by more than just normal expansion.

Try listening carefully while removing the pressure cap from a stone-cold engine. There should be neither pressure or vacuum. If there is residual pressure the second scenario is most likely and if there is a slight suction the first scenario is the most likely.

If there is neither pressure or suction it is likely the pressure cap is not sealing perfectly and air is being drawn in during cooling and a suction is not happening.

May 05, 2017 | 1999 Toyota Avalon

1 Answer

95 jeep cherokee heat


Both of the hoses at the heater core should be hot. If one is cold the heater core is plugged. You can think of it this way. If the thermostat was stuck closed and you checked the upper and lower radiator hoses with the engine hot the upper hose would be hot and the lower hose would be cool because there is no flow. If you check the hoses with a properly working t-stat both hoses will be hot when the t-stat is open and coolant is flowing. Let me know if you have any questions and I'll do my best to answer them. Thank you for using FixYa.com!

Jan 21, 2012 | Jeep Cherokee Cars & Trucks

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I have a 99 durango i have replaced heater core water pump thermostat and all hoses still barley any heat just warm vehicle comes up to normal temp does not over heat but still no heat please help


Are the heater core hoses getting hot? That could be a blockage in the intake manifold or engine block. Is the blend door sticking? That would be one item that would make for lukewarm air if the hoses feel nice and hot when up to operating temperature.

Jan 23, 2011 | 1999 Dodge Durango

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Heating problems cold to worm heat


is coolant level ok? feel hoses if they are hot( small hoses going to interior) also possible interior radiator stocked. good luck

Jan 31, 2010 | 1994 Volkswagen Golf

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I HAVE A 95 JEEP GRAND CHEROKEE AND ALL I GET IS LUKEWARM AIR WE HAVE FLUSHED THE SYSTEM CHANGED THE THERMOSTAT, RADITOR CAP AND HOSE, WATER PUMP NO CANGE WHAT ELSE CAN I do?


If your gauge is showing correct operating temperature and you are getting no heat from the heater, check (just feel them) the hoses leading from under the hood through the firewall that service the heater. One should be uncomfortably hot, the other only warm. If they are pretty close to equal or even cool, you have an obstruction in the heater hoses. Rubber hoses in the cooling/heating system are made up of laminated layers and if aged enough, the inner lining can separate and collapse blocking the flow of water either to or from the heater core. Sometimes, if bad enough, squeezing the hoses by hand can even locate the failed section; it will be noticeably weaker than the rest.

Jan 13, 2010 | 1995 Jeep Grand Cherokee

1 Answer

08 Sentra. Car won't get past 3 bars heater output is lukewarm. Even after 1hr plus running the upper rad hose is hot lower rad hose very cold. Any suggestions? P.S. It is -47 with wind chill and heater is...


it is likely air flow if air is cold enought it can super cool a rad if you cover part of the rad partialy and the heat starts to come then slowely cover it more and more untill it hits the proper heat range

Jan 08, 2010 | 2005 Nissan Sentra

1 Answer

1998 Tercel Cold heat to the windshield. Lukewarm out front vent.


Hey,

I just replaced my thermostat in my car due to the same problem. Except mine was a 92. I figured I'd start with the thermostat and antifreeze. Then the heating core. Now I have heat.

But yet I still have no heat on the windshield.

Oct 23, 2009 | Toyota Tercel Cars & Trucks

1 Answer

I have a 05 Nissan Sentra and it keeps running hot and the heat isn't blowing hot. But when Im under the hood the hoses runing from the radiator and thermastat; the top hose gets really hot while the...


Hey iisha, although obvious, 1st thing to check is the coolant level. If it's low, the engine will run hot and the low level prevents coolant from circulating to the heater core inside the car, so the result is little or no heat, but engine running hot situation. The top rad. hose takes hot coolant from the engine, it flows down thru the radiator where it is cooled (w/ help from the fan) and the coolant returns to the engine at a reduced temp. to keep the temp under control, and it's returned thru the bottom hose (the result is the bottom hose should be cooler thant the top. There's more involved than that, so 1st check your coolant level, if it's ok let me know I'll help further. Hopefully the fix is that simple, and it is a rather common problem.

Dec 08, 2008 | Nissan Sentra Cars & Trucks

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