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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
Why does Temperature gauge goes up and heat blows cold air?
Your low on coolent!
system set up to protect engine first so routs coolent away from heater.
Why is heater blowing cold air on 2006 Chevy Equinox?
A very common problem is a broken temperature door in the dash. This is an extremely labor intensive repairs. See TEMPERATURE DOOR below...
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It is either your water pump or your thermostat
It's burnt out. If it's old, call a heater specialist! Get a new one! It's not safe to leave it on!!!! Sorry I couldn't help much!
Why does the heater just blow cold air?
one because it is set on air only .. u need to shift it to warm first the RED mark...Secondly your heater wire must have come loose in the electricals. you should check out blendor store.com we had the same problem with our jeep, very helpful.
1989 Ford F150 and the heater isn't working It only blows cold air What could be the problem?
The thermostat may be stuck open.
Why would the car heater not blow any air?
- The duct fan is bad. Replace it. Beware though: it's a pain the butt.
- After you replace the blower motor and it still doesn't work, take it to a shop for testing if you can't do it. Other possiblities are a switch, relay, resistor, fuse, wiring. You can eliminate the fuse by swapping it with another of the same. You can try the "tap test" by rapping on the dash sometimes over the glove or on the blower motor itself, somteimes a weak motor may temporarily start working. Oh yeah, all blower motors aren't bad to change.
- If it's blowing air, but only COLD air, check that your engine coolant isn't very low.
- Sounds electrical, check the blower motor relay, although it may be switch or motor.
- This happened in my car! After replacing the blower motor (it wasn't broken afterall), found that it wasn't getting power due to a faulty ground. This was right behind the a/c heater radio console.
- With the fan only blowing at the 4 setting indicates the resistor need to be replaced. The resistor controls the flow of electricity to the motor, w/ the 4 setting not limiting the current at all, which is why you the fan works at that speed. I'm in the middle of trying to fix my blower too, but so far no luck. I've replaced the motor, but nothing's changed. The volt tester shows power to and from the motor, but no movement. I'm not sure what else I can check at this point.
- Is the fan actually running or not? Can you hear it...but no air seams to be moving? If yes, then one of the duct-work doors may be stuck. (There are little electric or sometimes vacuum operated door inside your duct work) A wire or tiny hose to one of these may be loose or fallen off. If you cannot hear the fan running at all, even on it's highest setting...then consider looking at fuses, loose electical connectors (sometimes they get kicked off by a passenger). It's actually rare to have a fan motor die...although it can happen.
- This is a really easy fix, it's likely that your thermostat is stuck. This has happened to me on numerous occasions when I had rusty water in my radiator. The thermostat was stuck, so I replaced it and tada! You've got heat. Usually less than 10 bucks to fix.
what is the make and model and can you hear the blower motor running
Engine overheats When a car or truck overheats idling, in town, on the highway, while towing, etc. it is important to find out the reason to prevent engine damage. First, with the engine cold, make sure the radiator is full of coolant; if it is low, fill it and keep the radiator cap off while the engine idles to insure all air is bled out of the system. Check the coolant level daily; if the coolant goes down without visible leaks, it may be a head gasket starting to leak which will also cause the heater to blow cold air due to the lack of available coolant. If the coolant stays full, but the car continues to overheat, the next step is to replace the thermostat in the engine and flush the cooling system if that has not been done over the last few years.Buy a thermostat at a parts store and a PRESTONE flush kit which has excellent directions on the package.After completing these steps and the vehicle still overheats, have your cooling fan sensor/switch ( if equipped)checked out to insure it is coming on. Water pumps are seldom the cause as they are mechanical and will continue to work until their bearings give out. Finally, the radiator itself is often the problem as it tends to build up corrosion internally which prevents it from transfering engine heat to the coolant. Remove it and have it 're-cored'. One of these steps will solve the problem.
How do you fix your heater if it is not blowing in a 2002 cadillac serville SLS?
Have somone hold a hot cup of water and blow it towards you. This will keep you a little warm. It would be bad if the person had bad breath.
Its possible that the oily fumes are from your a/c system..some models use same evaporator core for heater and a/c..if there is a rupture in the core, oil will be carried by the blower into your car interior..check your 134a or 12 refrigerant levels of the a/c and test pressures, if low or no press. theres your problem..hint: the a/c oil has a foul smel.. luck It sounds as if you have a heater core leaking. If you check the carpeting over on the passenger front side of the car, it will probably be wet. The fumes you are smelling are ethylene glycol, and the mist does not feel good in your lungs.
Your 1997 SC1 Saturn heater works but does not blow hot enough what could be wrong?
Sticking thermostat could cause this. If the thermostat is stuck open, it never gives the engine a chance to fully heat the coolant. Follow the top radiator hose to the engine, remove the hose and remove what it hooks to and there's your thermostat.
You most likely have a bad vacuum hose in the engine compartment or a bad control switch.
Why does heater not blow hot air on 1997 trans am on real cold days?
Thermostat stuck partially open or heater core clogged. Drain and flush the entire cooling system. Replace the thermostat. Install a 50/50 mix of fresh antifreeze and distilled water, and bleed air from the system.
Your 2001 JGC will not blow hot AC works fine but there is no heat even when turned up to HI?
Check if heater hoses were removed they run from the front of the engine to the firewall on the passenger side. Hope it helps
Needs a tune-up, and bad blower motor.
Im going to assume that you have a vacuum operated mix door since there is no other explanation for the door closing when you slow down. Having said that now you need to look for a vacuum leak between the mix door and the intake manifold, it could be a cracked tube or it may have gotten loose where it connects and when the vacuum supply lessens ( such as when you idle down )it loses its seal.
My 1997 Ford Explorer heater is on hot at all times and when AC is also turn on it blows hot?
It is most certainly a broken blend door. Typically to fix this problem, a mechanic will disassemble the entire dash, and replace the plenum box. Unfortunately this is an expensive fix because it is labor and parts intensive. There is a DIY solution called heatertreater. They provide instructions on how to access the blend door by removing the glove box, and replacing the blend door without removing the dash and plenum assembly. Broken blend doors are a common problem among Ford explorers, and most heating and A/C issues in late model Ford explorers are directly caused by a malfunctioning blend door.
Read more: 2004_ford_explorer_heater_problems_clikcing_noise
Why does a car heater blow cool air when the accelerator pedal is not depressed?
my theory is when u accellerate, ur water pupm pumps the water round ur engine at a higher speed than normal. as ur engine is just "tickin over" the pump is still pumpin water round the engine but the engine is working less so produces less heat therefore, water cools by the time it gets to heater matrix as it flows slower. i might be wrong but that's the theory i have had for over a year n im yet to see a different explanation to why it happens.
Why is your heater blowing out cold air when your engines temp is warm?
I had the same problem with mine. It was the thermostat, it was sticking and would not open until the engine got very warm and would force the thermostat to pop open, then the car would fill with warm air until the engine got back within operating temps or cooler, then it would stick shut again.
Diagram of a cars heating system?
A diagram of a cars heating system can be found at most auto-parts stores. The diagram can also be found at the automobile dealership.
Why would the heater stop blowing warm air in a 1985 Olds Delta 88?
My 85 did the same thing ,replace the heater core . john == another thought== Check first if fuse is blown,then pull fan blower motor,take and connect to proper power source and see if blower works,then check see if hoses are connected to heater core before removal,sometimes there is a valve to turn off flow to core.And sometimes during summer hose from pump to block to bypass heat.Then check make sure theromostat is correct,have seen these put in backwards.If all else fails before pulll core do a back flush,a lot of junk gets into core. ____________________________ Also, if your car has the auto climate controls, check the heat sink.
Why does blower only blow air threw the floor vent on my 2000 gmc safari?
check the vacuum lines on the intake manifold. also check the vacuum tank on the right side of the engine to make sure it's not cracked.(plug it off)
What will cause the heater to blow out cold air?
bad heater core, heater hose blockage, low coolant, bad heater valve, bad control head.
With my car, it was Heater matrix clogged with radiator sealant. The workshop cleaned it and it's start working fine!
