Question about Jeep Grand Cherokee

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Jeep runs fine and there is very little heat even with heat on full blast it gets a little warmer when you turn on recirculate please help .

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More than likely your thermostat is stuck open or your very low on coolant.

Posted on Dec 31, 2010

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1 Answer

Why is it overheating unless I have the heater turned on full blast?


The heater acts as an additional mini radiator to cool down the coolant. Sounds like you may need a new radiator.

May 24, 2015 | 2005 Jeep Liberty Limited

Tip

Toyota Air Conditioners


This tip pertains to maximizing the cooling efficiency from your Toyota's Air Conditioning system.

(The info that follows is for vehicles that are not equipped with "Auto" AC.)

On really warm days, nothing is better than getting in a hot vehicle, and turning on the AC for a nice comfortable driving experience.

In our service facility, we continually see customers who are not totally satisfied with their AC output. Hopefully, this tip will address those issues, and just might be useful to you.

The number one reason for poor cooling with the AC on, is neglecting to select the "Recirculate" function on the heater/AC control panel.

What is Recirculate?
That mode is where the AC system 'recirculates' the air contained in the car, thru the AC box, over and over, until the desired temperature is reached. The Recirculate button, knob, lever or slide is easily identified by seeing a picture of a little car, with an arrow doing a 'U-Turn" inside the car. This is the opposite of the "Fresh" mode, which is an arrow going 'straight through' the little car icon.

If you are using the "Fresh" mode, you are actually admitting ambient air into the car. Ambient air is much warmer, and makes the AC work harder, and you will see a 10 degree rise in the air temperature from the dash vents. Also, some vehicles admit the 'Fresh' air from under the hood, so, leaving the 'Fresh' mode selected could actually draw in the much hotter underhood air into the AC system.

So, what to do? Anytime you use the AC, please verify that the Recirculate function has been selected. As stated above, this uses the air in the car over and over, and your cooling efficiency will be 10 degrees colder. You can easily check and verify this with an 'instant-read' thermometer. Put the thermometer in the center dash vent, start up the car, turn on the AC, select Recirculate, and watch the temperature drop. It should stop dropping around 34-36 degrees F (depending on humidity, sun load, and a few other things). Now, when the temperature is as low as it will reach, turn off the Recirculate device. You will see the temperature actually rise, maybe 10-12 degrees.

Some additional info: As long as the car is in Recirculate mode, the AC compressor will eventually turn off, when the interior makes the selected temperature. This saves you gas. If you run the AC with the fresh mode selected, the AC compressor runs all of the time. This wastes gas, and costs you more money.

The best way I can easily sum up Fresh versus Recirculate is this:

Running the car with 'Fresh' selected is like running your refrigerator with the door open. It works, but it does not work good. Choosing 'Recirculate' is like running the fridge with the door closed.
If this tip helps you, please leave a positive helpful rating. Thanks!

on Jul 17, 2010 | Toyota Corolla Cars & Trucks

Tip

Climate control settings,on all vehicles


When using the ac on a hot summer day,or a mild spring day,the compressor runs all the time.If you set it to low,and turn the temp to cold or toward the warmer side,lets say cool,then the ac compressor runs also,it just cycles,on,and off.No matter what setting you are using on your ac control,the ac compressor stays on,using fuel.Get the most out of your ac,while it uses your fuel,to keep you comfortable.All vehicles have a MAX setting,or a recirculate setting.Always use this setting.I say,always use this setting,not only that,but use this setting.I stress this because you are pulling in air ,from the out side,that is warming the evaporator,and making the ac work harder to give you comfort.In the hot ,hot summer,the settings MAX,and recirculate,keep the air that is in the vehicle,in the vehicle.It recirculates the air,instead of bringing hot air inside the vehicle ,and bringing the temp,up,to a warmer temp.A lot of people don`t even know that this is on the control,or don`t know what it is for.Some times the recirculate button,or dial,will have a picture that looks like a C,but squared off at the corners.So folks,get more out of your vehicles cooling and heat system.Yes ,this will work on heat also,maybe not defrost,but on some cars,it will work.

on Dec 08, 2009 | Chevrolet 1500 Cars & Trucks

1 Answer

Subaru traviq


Check your coolent levels, (of course) after the engine has cooled, (of course) Im sure you've already done those things... Have you checked for leaks around the the hoses and clamps? one small thing that would help take some of the heat heat off your engine is to turn off your AC and turn your heater on full blast. It's a little uncomfortable but it may help you get another mile or two down the road. Make sure your windows are rolled down, especially if you have little ones or pet in your cab. Dont forget to coast when you can. I hope you get it fixed bro, Im going through that too.

Aug 03, 2013 | Cars & Trucks

1 Answer

Interior gets warm, even with the heat turned off. The dash board area is much warmer than it should be.


sounds like your position select switch is sticking open when shut of.f my van did same thing so i just turn on a/c full blast wait to get cold then shut off.. that should stop some of the hot air coming from the engine bay

Mar 16, 2011 | 2001 Lincoln Continental

2 Answers

Jeep starts just fine and runs fine when cold but once gets up to temp and you shut the car off and try to restart while still hot it starts hard and wants to die if you shift into gear but by feathering...


I'd check for trouble codes if you haven't already. Sometimes emissions related things like egr (exhaust gas recirculation valves, pcv (positive crankcase ventilation or even heat riser valves can become faulty and cause problems when the vehicle reaches peak operating temperatures. check for dtc codes and let me know if you come up with any

Nov 29, 2010 | 1995 Jeep Grand Cherokee

1 Answer

I have an 01 Jeep Cherokee Sport. I am having


As soon as the vehicle reaches around 180/195 (depends on the temp of the t-stat) the thermostat should open and thereby filling the top hose with warm/hot water.
Are you sure the thermostat is facing the right direction? Is the cooling system full?
Here is what you can do: remove the t-stat, replace any lost coolant/water and run the vehicle with heater on full blast for about 15 minutes or until the temp gauge is showing about halfway. During this time be sure to monitor the coolant level in the reservoir.
If you still have no hot air you may have a blockage or perhaps the heater hoses are not even connected.

Jan 06, 2010 | 2001 Jeep Cherokee

1 Answer

My 1996 jeep grand cherokee is blowing cold air for the first 30 minutes of my ride home (20-degree weather), then warms up slightly but never gets hot -- i'm guessing heater core (it has 200k+ miles)


It is most likely a thermostat. As your car gets older the thermostat begins to lose its spring like properties and stays open all the time causing your car to never warm up.

If you can't tackle right away, start your car in the morning and let it run for about 15 minutes to warm up. Be sure to turn the heat on full blast and recirculate the air.

Dec 15, 2009 | 1996 Jeep Grand Cherokee

1 Answer

Blowing cold air out when defroster on a little warmer when heat is on at my feet but not much


1st. make sure it is full of antifreeze/water. The defrost will be colder because the A/C comes on when defrost is turned on. The next thing is you may have a heater valve not opening as it should. Vacum or elect. heater valves have to open so hot water can flow for heat thru the heater core........hope this helps..

Nov 18, 2009 | 2000 Jeep Wrangler

1 Answer

Climate control on full blast hot controls unresponsive


the climate control unit is bad you can get a used one from a local salvage yard and it should work fine

Aug 03, 2009 | 2005 Dodge Caravan

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