Car Heaters

add water to the radiator. believe that. if there is no water flowing through the engine, your heater will only blow cold air. if there is no water flowing through the engine and your heater is only blowing cold air, and not HEATING, your heater core is probably going out or will be soon. most people believe that if you have no water in the engine then your temperature gauge will run hot and you will know that you are overheating the engine. WRONG! your temp gauge only measures WATER temp. But if there is no water to measure, there is no temperature rise showing on the dashboard gauge. if you have NO WATER in the engine you can seriously overheat your engine and not know it because the gauge is not getting any hotter than usual (sometimes your gauge will even read cooler than usual).

In cold weather, the temperature gauge may fluctuate as the thermostat regulates the temperature by turning the heat on and off to maintain the desired level of warmth in the house. This cycling on and off is a normal part of the heating system's operation to keep the indoor temperature consistent.

It sounds like there may be an issue with the wiring or controls of your temperature switches. Check to see if the wiring is connected properly and if the controls are functioning correctly. If the issue persists, it may be best to consult a professional HVAC technician for further troubleshooting and repairs.

This type of reversal in a switch can happen due to a wiring issue or a malfunction in the switch mechanism itself. It is important to have a qualified electrician inspect and repair the switch to ensure it is functioning safely and correctly.

It is possible that there is an issue with the blend door actuator or the heater control valve. These components control the temperature distribution between the front and rear heating systems. I recommend checking these components to see if they are functioning properly.

The heater resistor is quite simple to change. Unplug the wiring harness from the heater resistor. Remove the heater resistor retaining screws. Reverse the process to install your new heater resistor.

It could be any of a number of reasons. Such as: You are out of freon. Your compressor doesn't work. Really the only thing your light being on is telling you is that the fuse isn't blown. And your heater has nothing but the blower motor and duct work in common with the air conditioner. I would suggest a good mechanic or a Haynes or Chiltons Manual if you are mechanically enclined. Good luck. Jeeps are notorious for the AC going out more than likely your heater core box is full of debris and the fore you have to go to the dealer ship and they cahrge you $850 to clean it then they tell you how you need a new condenser and that is another $850 this has happend 2X to me my suggestion is get rid of it additional info: there are a number of posts on Wiki concerning AC problems with Jeep GC's. My experience is that you probably are having a problem with a clogged drain tube leaving the evaporator box. This is assuming that your freon system is fully charged. I would have a reputable AC tech check the freon first and then turn my attention to the drain. The previous answer is correct about the debris in the evaporator box and it is a result of extremely poor engineering on the part of Jeep. Keep looking on line and you will find out more.

Of course, you have to be sure that the compressor is working, the system is charged and things are getting cold. A simple check of the refrigerant lines going into the firewall with your hand will give you an indication of whether the system is cooling or not. If the lines are cold, your problem may be with the blend door or re-circ door. The blend door diverts some or all of the air flow through the heater core. When this door breaks, you lose control over the air flow and can see problems with both heat and AC. Usually the broken blend doors fall to the bottom of the heater box on the GC and block heat. However, it is not uncommon for the doors to fall crooked and kill the AC function also. The re-circ door is also susceptible to failure. This door chooses between external and internal air going into the system. When it fails, you are contstantly pulling hot, outside air into the system, greatly reducing AC efficiency. Both of these fail modes are common. Check the HeaterTreater listings on Ebay for more diagnostic information and an inexpensive fix for the problem

under the dash pass. side look at heater you will see a plug with several wires that look like thy go into the heater there is a one screw plastic cover over this area so your feet dont hit it remove then uplug the wires then take the 2 screws out of oval shaped sensor and pull it out of heater you will see some transister on the back side and a little coil . replacing this will cure it usually . but first remove your heater blower and make sure it turns freely and not seizing.

You have to take off the glove compartment, and some other paneling to get to a little motor with a whole bunch of gears right behind your center console. Just put grease (or Vaseline) on all of those gears, and you should be good to go!

check both heater hoses under the hood with engine at running temp. if only one hose is hot your heater core is restricted( try flushing it out),m low coolant will also cause no heat since the heat comes from the hot coolkant in the heater core. if both hoaes are hot chances are the blend air door in the interior heat unit is faulty or climate control is not calling for heat.

Has to do with the rpms if it's idle not much power is giving out to the car from the fan belt to get very warm. Say next time you're in your car. Start the car give it a little gas where the rpm is almost at 2 rpms. Same goes for the a/c.

You may have air trapped in the cooling system. Remove rad cap, start engine and let it run for 30 minutes with the cap off while you add coolant as needed. That should do it unless you have a cooling system leak.

vacuum controlled doors ...vacuum leak or a pen or pencil down the vents....look at some pics Everyone should have a manual for their vehicle, and the library should have a professional shop manual available in the reference section(make copies of the right sections) read up and fix it like a PRO! :) good luck

in early 1800

==new answer== The universal principle is this- if you want someone else to be something, first be that yourself.

A way to work with this so that you can see how it works is to pick a person you are in daily contact with. Next, make a list of the things about this person that irritate you. Beside this list, choose the direct opposite of this quality and choose one each day to practice in that person's presence, without their knowledge of what you are doing so you can see the results. You will actually be practicing being what you want that person to become. Practice this thoughtfully and faithfully for two weeks and then log the results.

"Molly is the most _____ person I know because she changes her mind all the time."

I have the same problem. Did you find anything out to help?

Good change a plugged heatercore. When it runs, feel the two hoses going into the firewall that carry coolant. If one is smokin hot and the other isn't, then that's the problem. Post you results.

no ,but u will have to get it checked up on mabe, reprogrammed

A thermostat stuck in the open position could keep an engine from reaching operating temperature, the interior heater would also not blow hot air. This can happen when using hard water ( water with a lot of minerals in it ) mixed with antifreeze.