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Car Heaters
A car heater is a device used to heat the engine of a car, especially during cold weather. Commonly used in the northern US states, Canada or Scandinavia, the device warms up the car’s body and system for easier starting.
1,180 Questions
How do you fix heater blower control fast?
If it will only run on fast, or it won't go on in fast position. It most likely the blower motor resistor. Blower motor is OK because it is running even if it is one speed..replace the resistor. It only coast 20 - 30$
Why would a heater only blow out heat when set to max?
Sounds like the blower motor resistor has gone bad. This is sometimes located behind the lower dashboard in the area of the glove box.
Why does your heater not work in a 94 Mazda Protege?
If your heater does not work on your 94 Mazda Protege, check the thermostat. You can also check the heater fuse to ensure it has not blown.
head gasket failure.
Stuck open thermostat.
Restricted coolant flow (plugged heater core).
Temp blend door malfunction.
Low on coolant.
2000 durango heat not working but blowers work?
Either your thermostat has failed (engine stays cold) or your flap that isolates the airflow through your heater core has failed.
Sounds like it might be a short in the wiring or a swich. Check all wiring and swiches. Hope this helps.
Why would a car only overheat when driving on highway not when driving around town?
Each of these things can be checked independently of the others without spending any money on parts.
1-Low coolant level.
2-Restricted airflow to the radiator as from leaves or plastic bags in fron of it, or the plastic under-skirting being broken away (as from running up onto curb-stops.)
3-Restricted flow of within the radiator or hoses. Restricted flow in hoses is rarer, but rev the engine to 2000 to 2500 RPM for several seconds after the engine is fully warmed and look for either radiator hose to collapse. To check for restricted radiator, you can take the temperature of the radiator with a non-contact thermometer in several places or you can open the cap (if so equipped) and look for white deposits. White deposits mean you need a radiator. If your radiator has no cap, remove the upper hose and look in through that opening.
4-Poor heat transfer. Poor heat transfer can be radiator to air (look for missing or greenish radiator fins) or internal due to a high ratio of anti-freeze to water (use a hydrometer) or internal due to scale deposits (with an iron engine your coolant will be brownish, aluminum engines can be checked by removing the thermostat or water pump and looking inside for whitish deposits).
5-Insufficient coolant pumping. Metal water pump impellers can erode over time, especially with excessively old coolant. Plastic water pump impellers can break randomly, and are prone to break if the engine is a Ford Duratec or Volkswagen or if the water pump hasn't been replaced after an overheat. Cheap substandard $5 replacement water pumps have often have a poorly designed impeller that can become dislodged. To check, remove the thermostat(s) and fill the system with coolant or water. Remove the radiator cap (if so equipped, otherwise surge tank cap) and observe the coolant level while rapidly snapping the throttle from closed to wide open. The coolant level should change drastically (more than 1/4 inch) if the pump is good.
6-Exhaust gases leaking into radiator. This is usually caused by a leaky head gasket, but can also be caused by a cracked or eroded engine. Note that GM Quad-4 engines are particularly prone to cracking, and four cylinder Chrysler engines and cars owned by youthful males or Jewish women are prone to head gasket leakage. An electroneic gas analyzer can be used to check this condition, but for the do-it-yourselfer, check with the local parts store or tool dealer for a disposable chemical based detection kit.
7-Boiling. Boiling can be caused by too much water in the coolant, insufficient pressure due to a leak or a bad cap, Partially restricted water jackets, or overheating due to another cause. Presumably, any other overheating has already been ruled out so you might as well check for leaks, then replace the coolant with a correct mix and put a new cap on it. If you have a restricted water jacket, you're going to need the engine rebuilt.
***Fan related problems will _not_ cause overheating at highway speed.***
AnswerThere are many possibilities. But if you are traveling locally a very short distance, possibly the engine does not reach temperature to open the thermostat. The water is circulating in the engine. On the highway, the car may reach temperature, opening the thermostat. Now the water is also going through the upper and lower radiator hoses and radiator. If there is a small leak in the hoses or radiator, that would cause overheating, now that the water is leaving the engine, (and is under pressure).A pressure test of the cooling system usually will show a leak.
Especially if you notice fluid under the car after driving.
AnswerA weak lower radiator hose could collapse at highway speeds but not lesser speeds around town. AnswerThe most likely cause is a plugged radiator. Over time sediment build up in a radiator. Every time a radiator is heated and then cools the sediment collects at the bottom of the radiator slowing reducing it's efficiency. I have seen this particular overheating problem numerous times and traced it to a plugged radiator. Take it to a shop and have the radiator rodded and repaired and it will cure your problem. AnswerHave your clutch fan checked. the tension of the clutch can weaken causing the fan to turn too slow at higher rpm's. AnswerI had a similar problem. If the car has sit for any length of time a mouse or rat may have built a nest in the muffler or exhaust pipe. This causes back pressure to build up at highway speeds but not at short low speed in town driving. If one of the other ans did not fix the problem this is worth a shot. Answeranother possibility is a blown or leaking head gasket. A cracked head/block will also cause a vehicle to overheat when operated at higher rpm, the crack doesn't expand until temperature is excessive. typically the vehicle will produce a smoky emission from the exhaust, but it is actually steam from the antifreeze/water mixture leaking into the combustion chamber.Why won't the heater selecter knob turn to the defrost setting on a 2000 Daewoo Lanos?
I have A 99 daewoo Lanos with the same problem. I took apart my dash to find that the control cable has a broken shield over it. to easly check this your self just above the gas peddle and to the right there is your heater box on the side ov it is a control lever for diferant settings see if you can move it. I have A 99 daewoo Lanos with the same problem. I took apart my dash to find that the control cable has a broken shield over it. to easly check this your self just above the gas peddle and to the right there is your heater box on the side ov it is a control lever for diferant settings see if you can move it.
Why your heater in 98 Lincoln town car only blow cold air?
Could be the Climate Control Unit or Clogged heater core.
Why does my heater blower work only when i hit a bump?
Sounds like you have a short somewhere. You'll problebly have to take it in to a mechanic to get it fixed. I know that's not much help but if you didn't know there was a short I'm sure your not going to be able to fix it either. Good luck.
Why won't switch stay in acc position on a 86 silverado works fine if you hold it in place.?
Ignition switch worn and needs replacement
What causes a heater to only be warm when driving not idleing?
There are a few reasons this could happen but the most likely is that the Thermostat is stuck open. This means when you don't have much load on the engine the Coolant which powers your heater does not have enough time to warm up. Then while driving you put a load on the engine, increasing the amount of heat created which will warm the coolant.
There could be other reasons for this is well, but I believe that in most vehicles replacing the thermostat is a somewhat simple and inexpensive job.
Why cant get the heater to work in the car?
You could have a problem with your thermostat in the car.
What happens when there is no water in the radiator?
When there is no water in the radiator, a car can overheat. Serious damage can occur like a blown head gasket an warping if one drives for a long time without placing water in the radiator.
Black smoke is an indication of an overly rich fuel/air mixture. You need to have the ECU scanned as there must be a fault code set. In fact your Check Engine light should be on all the time. Use the fault code to help find the problem.
2002 ford ranger won't blow hot air?
Chances are 90% that it is your blend door. At any rate pull out the glove box you should be able to see a small rad like thing off to the left. with the engine running see if this is warm to the touch. If it is then its almost certainly your blend door. Having established that there's 2 problems. Fist it may be the actuator assembly that moves the blend door or it could be the blend doors hinges that have failed. Here's the bad news the only real way to access any of this is to take your dash apart. Why ford put cheap plastic components in a completely inaccessible area I have no idea but there you are. When this happened to my truck I took the chance and decided it was the blend door itself. this is easier to fix if you don't mind making an access hole. I just cut a hole under the dash on the passengers side big enough to reach the blend door and then taped it closed for the winter. Its -25 degrees below zero here on the Canadian prairies right now so that rules out doing repairs in a frozen truck.
What is the part of the defroster and heat system under the dashboard?
Depending on what kind of car you have it is most likely the heater core. It looks like a small version of the radiator. As well there is probably a fan under there if it is not located on the firewall. On older vehicles (60's/70's) both these items are sometimes accessed from the engine compartment
Why is my heater fan on my 1997 e class not blowing air?
Most common would be your blower motor voltage regulator, this is the part that varies the voltage to the blower motor telling it to go faster or slower. It is located up under the dash on the passengers side and pretty easy to replace. You might also have to replace the blower motor and cover though, if the regulator has never been replaced before you might have to do this. The old style regulator is not available anymore.
Why would a car heater only blow warm air when on high heat setting?
Could be,
low on coolant,
stuck open thermostat,
plugged up heater core,
faulty temp blend door actuator,
Yes, pipe plugs from a hardware store will work just fine.
How do you change the heater core on a 1967 El Camino with AC?
You need to purchase a Haynes Manual that is specific to your car. They can be bought at a parts store or bookstore.
Where is the ac heater blow motor on a 2001 Pontiac Bonneville how do remove it?
underneath the dashboard on the passenger side.
How does the heat work in a 1988 Chevrolet Silverado?
Exceptionally well. Most GM vehicles from the 1980s and 1990s had heat that could bake you in January. Why do you think people actually drive rusted out old Chevy's in northern Germany and think they have a special car?
1997 Dodge Ram 1500 4WD Vacuum Check Valve location......Are both check valves the same part number?
What year is your dodge ram? i have a 1997 4x4, 318, and it has two vacuum check valves going to the heater controls. the first check valve is on the right side of the intake maifold, just below the hose going to the pcv valve on the right side valve cover. if you follow that hose to the right side of the firewall, there is a tee in the vacuum lines, if you follow the line that goes into the cab, that line has another check valve. i found that the one at the intake manifold was the valve that failed on me. good luck
What can cause a car heater to not work?
well for one it could be the heater blower motor or it could be the control under the dash that changes it from hot air to cold air if the spring spring breaks it will not get hot.
Hope that helps Try changing the thermostat. If it is stuck open or failed, engine temp will not rise. I had same problem on 95 explorer, changed thermostat myself and solved problem. Answer
It could be the water pump but most likely the antifreeze is low and needs to be filled up to be able to circulate through the heater core.
need more info. you could be low on coolant.for all we know. there are alot of different parts to a cooling system which bring heat to the cabin area. start simple. ck fluid level make sure it is full when cold. 2. when running does it circulate through the hoses. 3. are your heater hoses hot. both. 4. does your fan blow in all possitions & does air come out from your vents?
Answer
A heating system works by diverting hot coolant through a heating grille where it warms up air which the fans blow in whichever direction and whatever speed you specify.
Basically there are two parts to the heater system, there is the heater tap, located in the engine compartment. It controls how much (if any) hot coolant goes through the heating system in your car. Probable causes are a leak in one of the hoses, the heating grille itself (you will smell coolant in the car) of the radiator is not sufficiently topped up with enough coolant to circulate through the system. If not turn your heater on to full, turn your car on for a short while, turn it off and top up the coolant. Also bleed the air out of the system if necessary.
The second part is self explanatory, the fans blow the hot air around the car if the problem is not with the first part above, it would be best to have it taken to an auto electrician.
first thing you need to check is your fuses .It is actually the heater motor, sam thing happened to my 2000 Alero
