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Heater only warm

Have replace thermostat but heater only warm

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6ya6ya
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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

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SOURCE: Heater not blowing warm air. Thermostat has been

Check the water control valve behind the engine close to the firewall. This valve opens and closes to allow hot coolant to enter the heater core. It is usually connected to the heater controls with a cable. When you adjust the heater control for heat, a cable activated lever on the valve should move and allow coolant to move through the valve. The cable from the heater control can come loose from the lever, or the valve itself can become corroded and hard to move.

Posted on Oct 16, 2009

  • 161 Answers

SOURCE: ONLY WARM AIR FROM HEATER,

The next possibility, if you haven't already thiught of it, is as simple as making sure there is enough water/antifreeze solution in your radiator. If the level is too low, your hoses will get hot, but there will not be enought water to circulate into your heater core.

Posted on Dec 18, 2010

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Bmw e46 316 2001,heater problem...heaters only blow out luke warm air.not sure whats causing the problem,could it be the thermostat,hedgehog resistor,or heater controll valve...advice please


Touch both heater hoses under hood when car is warmed up Kane, They should both be the same temp if your heater core is working good. The next thing would be to replace the thermostat.

Feb 03, 2014 | Cars & Trucks

1 Answer

Heater not warming up


Most likely the thermostat broke. I expect that you have an older Hyundai and never had the anti-freeze changed. When the engine is cold the thermostat is closed which causes the engine to warm up more quickly. A warm engine runs more efficiently (less gas) and more smoothly. When the engine temp reaches a certain temp the thermostat opens and then allows the hot engine coolant to run through the lines to the heater core. The heater blows air over the heater core which produces the warm air that warms up the cabin. Thermostats used to be cheap and easy to change. I would suggest a web search for how to replace the thermostat. Something like 'hyundai accent 2002 replace thermostat".

Jan 10, 2014 | 1996 Hyundai Accent

1 Answer

Have had thermostat replaced, still runs cold in the heater


air bubbles means head gasket.
how is the coolent level?
are you loosing coolant ?

Mar 23, 2013 | 2002 Pontiac Montana

1 Answer

Why heater only warm


Either your thermostat is broken and jammed open (this means the water in the heater matrix will take forever to get hot) or you have an air-lock in the heater matrix. To check the thermostat, the engine should get too hot to touch before the radiator gets even warm. If they all get warm together, your thermostat is faulty. To bleed the heater matrix, uncouple the higher of the two hoses from the bulkhead an top up the water resevoir until you get flow from the loosened heater hose.

Oct 10, 2012 | 1998 Dodge Durango

1 Answer

We replaced the thermostat in ford f150 but heater still blows cold air


another expert named:
telemachus
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  • Rating: 93%, 190 Votes
First, if the engine seems to take forever to warm up, you may have a stuck (open) thermostat. Replacing the thermostat would help get your engine to warm up quickly and maintain the proper running temperature of about 180 deg F. This would solve your heater woes.

However, if the engine warms up normally but the heater just doesn't seem to put out, check the heater inlet valve. This valve is usually next to the firewall on the engine side and is activated by cable(s) or vacuum lines. It is common to find that the valve cables have frozen, the cable ends have broken off, or the vacuum lines are disconnected or broken. Another common problem on vacuum run valves is that the vacuum diaphragm that operates the valve has failed. The diaphragm won't "hold a vacuum" meaning that it leaks and won't operate the heater valve.

If all that seems to work okay. The heater core could be getting warm coolant through it but the underdash heater air handler box has a movable door inside that is not in the requested position. These doors are operated by cables or vacuum lines---so same checkout as above.

Jan 31, 2011 | Ford F-150 Cars & Trucks

2 Answers

Engine won't warm up. heater won't blow warm air.


maybe it is missing its thermostat.... this can keep the air in your heater cool in winter

Aug 17, 2009 | 1999 Ford Ranger SuperCab

1 Answer

2006 dodge ram 2500 heater not blowing hot air....


it sounds more like the thermostat, a thermostat will cost around 8 to 12 dollars,just remove the thermostat housing and replace the old thermostat then reinstall the housing

May 21, 2009 | 2006 Dodge Ram 2500

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2000 Jetta Heater Not working


2000 jetta warms up when idling, but gets cold as soon as I start driving.

Dec 17, 2008 | 2000 Volkswagen Jetta TDI

3 Answers

HEATER NOT HEATING


If your heater is not blowing warm air, your thermostat is probably sticking or your coolant level is critically low. When you start your vehicle, your radiator coolant begins warming up from being cycled through your engine block. One the cooland reaches a certain temperature (usually 130-150 degrees F.), your thermostat spring will retract and allow coolant to then pass into your heater core. However, if your coolant level gets too low, or if you are using a coolant mixture that has more water than antifreeze, thermostats have a tendency to rust and corrode and will stick. Thermostats can also go bad for what seems like no reason at all. The good thing is that usually thermostats are pretty easy to replace. It's the most common thing that would cause the problem that you're explaining. However, if changing the thermostat doesn't fix the issue, there is always the possibility that you could have a collapsed hose somewhere under your hood. If you change your thermostat and none of your hoses are in bad shape, you most likely will have a vacuum line to reconnect under the dash, as most heater controls in late model vehicles are vacuum operated. I'm almost positive that the thermostat will be your culprit though. **Make sure when installing the new thermostat that you use a new gasket or O-ring, whichever applies. Afterwards, start the vehicle and watch to see if you have any leaks around the thermostat housing and continue to observe until the temperature of the vehicle gets to normal operation temperature.

I hope this helps, and hopefully you'll have heat pumping through your vents in no time at all!
Have a great day and try to keep warm!

Nov 23, 2008 | 2000 Jeep Grand Cherokee

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