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Heating AC and Engine Cooling

Parent Category: Auto Parts and Repairs
Heating, air conditioning (AC) and engine cooling require a radiator to transfer heat. Heating a cabin requires heat to be transferred from an engine block. Engine cooling blows the heat out of the engine. AC uses refrigerants to cool air.
What is target a/c delta 'T' . The target temperature is 20*. It can vary from that based on conditions, but that is the design. Regards . What is target a/c delta 'T' . The target temperature is 20* difference between the return and the supply air temperature. It can vary from that based on...
Answer . This is a good time to service the system. If one hose is bad, replace both the upper and lower unless you have already replaced the lower. Also check the heater hoses carefully and replace if in doubt. Drain the radiator and remove and replace the thermostat. Fill it up with a 50/50...
The engine in your automobile is supposed to operate at around 200-220 degrees. That is the temperature at which it is the most efficient. If the engine is running hot, then you need to find out why. Drain and flush the radiator, replace the thermostat, and fill with a 50/50 mix of antifreeze and...
Answer . If you see no obvious leak from the hoses, radiator, water pump, or from the heater core, suspect a blown head gasket. Coolant in the oil, sweet smell at the tail pipe, air bubbles in the radiator, a white foamy substance on the underside of the oil fill cap, missing engine or loss of...
  == Answer ==   If your not noticing any leaking, check your oil to make sure there is no milky white substance.  This would indicate a blown headgasket.  Does your vehicle smoke at all?  This too would indicate that coolant is getting into your combustion chamber and being...
Our water pump isn't working the fuses are fine and the electrician said it was frozen somewhere, how do we fix it?
It does not have a cabin air filter.
== Answer ==   the sensor is located right above the oil filter....careful they crack very easily...but are really easy to replace...part costs about 25 bucks.   Do you have to drain the oil I wonder? You do not have todrain the oil to change out a pressure sensor.   No. the unit is outside...
  == Answer ==     It depends on what parts place you buy it at at autozone mine cost me around $60.00 others ranged from $50-$75.   == Answer ==     I just bought one for my 95' 2.0 and it ran new $69.00 with a lifetime warranty. You can buy cheaper rebuilt 1 year warranty for...
Answer . Compressor is more than likely locked up or you have a short in the wiring.
Hey Roger===If you stated the kind of car and engine you had it would be easier. Just guessing, it is either the cable to the throtle body or carb hanging or the idle solonoid needing cleaning. GoodluckJoeA sizable vacuum leak could also do that.
It is located in the inlet side of the evaporator.
It's under the dash on the passenger side. It's fairly easy to replace, lots of how's to out there on the internet. Cost of the part should range from 20-30 depending on the brand you go with.
== Answer ==   Follow the top radiator hose to the engine. There is a radiator hose clamp, remove that for easier access to the bolts. There is a removable piece attached to the engine.(2-3 bolts) The thermostat sits in here. Remove the thermostat (piece has a spring) Remember how you took it out...
Hey Daniel==It is prettu oinvolved. Get a sshop manual from the parts store and go from there. GoodluckJoe     hey, lemme tell you what I know from my '93 recent experience. Do not replace the water pump unless you replace the timing belt, and THE O_RING behind the water pump mount and the 3...
  == Answer ==     It is likely germs and fungus in the air conditioner. You can use a spray product to clean it.   == Answer ==     If the evaporator is leaking you will get a very bad order. You will also start loosing your freon, then no a/c.
  == Answer ==     First blush guess: the compressor is siezed, so that the engine can't turn it. If you rev up the engine a bit before you turn it on, you might find that the engine will load, but not die, and the belt will slip/squeal/smoke.
  == Answer ==   The compressor will "cycle" on and off if the refrigerant level is getting low. There is a sensor that detects the pressure of the refrigerant on the "low" side. If there is enough pressure, the compressor can turn on. When the compressor pulls some of the refrigerant and...
The water pump in most cars are attached to the cooling fans and I have a 1994 Mercedes C220 and the water pump is attached to the cooling fan, right in front of the engine. It has like eight bolts to unscrew, and bear in mind that the snake belt goes around the water pump, the alternator and the ac...
Skylark Water PumpI thought changing water pump would be a pain but all honesty it was kinda easy. I took off the steering pump, and alternator and cole housing youll see them all on top. i didnt disconnect any i just shoved them out of my way. now you find the tension pulley and lift up on it till...
Answer . Generally, you should have about a 50/50 (%) mixed of antifreeze and distilled water. GM recommends using Dexcool antifreeze. I would recommend that you use whatever antifreeze that is in there now and stick with the 50/50 mix. Take Care, Greg . Also take care that if your van...
Follow the upper radiator hose to the engine. Under the housing is the thermostat. Make sure when you put it back together the spring on the thermostat goes toward the engine. GoodluckJoe     This is a followup to the previous answer. After you find the housing and remove the hose, be aware...
1hp = 735 W, 10 hp = 7.35kWThat's the power consumption. How much energy it use up depends on how long you run it.
What the manufacture recommends with the exception of dexcool. There is a pending class action suit regarding it.
  == Answer ==     Cooling fan is bad, draw's current but will not turn so it overheats. It will eventually melt down. This happened on my 95 GT. I have another 95 GT with the same problem. Replace the main cooling fan. The one on the left or drivers side.
  == Answer ==   Quick release fitting located on the low pressure side (Larger hose from compressor)
Hi, I am not sure if the drain hose in a 94 jetta is in the same position as in a 95 jetta.In a 95 is below the glove box, to the left of the passenger side, in my case I found its location because it was not draining correctly, and the passenger side floor had a lot of water below the floor mat, so...
The evaporator is located behind the dash on the passengers side and the receiver drier is located in front attached to the a/c condenser.........
Have you checked the hidden fuse? There is a flip open box on the side of the fuse panel with a fuse in it. There is also one inside the engine compartment. I don't remember which one it was. If all else fails see if you have power going into the black box (blower motor control) in front of the...
The air conditioner uses fuses 28,62,63..........
I don't truly understand what you are asking but if the a/c system is cooling you don't need to replace the freon...If you are trying to evacuate and recharge the a/c system then you will need to do the following..1. Take the truck to any auto a/c shop and have them reclaim the freon..2. Using a set...
  == Answer ==   Buy a kit at Wal-Mart or auto parts store comes with instructions
    == Answer ==     The low pressure port is not located on the compressor. It is on the accuator cannister to the left (looking into engine compartment)( a metal silver finished object) with a capped black fitting pointing outward toward the passenger side fender.   Previous...
The question still remains.....what motor are you talking about there's a few to contend with here. Work on cold engine! I was able to save the fluid. If it's the 5 Liter, 8 cylinder, drain the stuff, remove shroud, remove blade, disconnect all the hoses. Remove the serpentine belt. Draw a picture...
Spectacle Blinds- 1.Usually installed as a permanent device. 2.Made from two metal discs attached by a small metal plate. Looks like a pair of glasses or "spectacles". 3.Requires open area to change from open to closed position or to remove the blind. 4.Heavier than a paddle blind. Larger sizes...
It is difficult to determine the different pressure ports on your  air conditioning compressor without knowing the make and model of  the automobile. In most cases the low pressure port is on the right  hand side of the air conditioner compressor.
The high side is the rich class of people with nice jobs. The low side were the poor and lower class jobs.
According to the 2000 Ford Windstar owners manual :    It came from the factory with a 50 / 50 mix of distilled water and  GREEN    colored antifreeze ( meeting Ford specification ESE-M97B44-A )    * Ford states to not exceed 60% antifreeze in the mix *
Yes! They are awesome! They are so sweet! Hamsters are really cute  and cuddly.
To drain the radiator on a monte carlos 3.8 SS, the best way & dat will save u more time will b by removing the the hose dats on the bottom of the radiator (which is about 1 inch all around on the bottm) which is in the bottom of the radiator & connets to the motor block,1) just remove the...
  how do you replace the water pump on cadillac cts 2004 3.6
On the 1988 Pulsar NX SE, when you're standing in front of the car, looking into the engine compartment, it's on the left side (the passenger side) near the top of the engine, towards the back. Just follow the big hose from the top of the radiator to where it connects to the engine. It looks like...
The process is the same as with virtually every modern automobile out there. You need to either buy a recharge kit, if they are legal in your area, and follow the instructions. If home recharge is not legal in you area, you will need to take it in any way.
  Try this site, just type in the make model and year in the boxes on the left hand side. http://genuineservice.com/genuineservice/en/gloveboxresults
  it is essentially a tiny radiator. hot coolant goes in and heats up the fins in the heater core and your fan blows air through the heater core thus heating up the air and you.
  By repairing he problem, which is more than likely a blown head gasket. Do not drive this car as severe engine damage will occur.   My two cents: Note that other leaks can cause this problem. GM 3.1L and 3.4L SFI engines get this problem from a lower intake gasket. Chrysler OHC V6 Engines ...
possibly burning it ,wrong radiator cap ,if it doesn't have a overflow bottle then radiator level is usually just below the neck it finds it's own level,is it blowing it out after shutting it down
  == Answer ==     plug the wire in on the driver side of the car and 4 bults in it
== Answer ==   see this wikianswer page, the CRX and the DX are almost the same,   http://wiki.answers.com/Q/How_do_you_replace_the_thermostat_located_on_a_1989_Honda_CRX
The previous answer was "Yes It is totally portable. You will need a portable extension cord also or a portable AC generator." It is self-evident that it is portable in the sense that you can uninstall it from one place and reinstall it elsewhere. However, the normal use of the word "portable" when...
Check for loose wire connections also   == Answer ==   Defective blower motor or resistor pack. Blown fuse or defective blower motor switch.
It's on top of the compressor, dead center of the engine compartment. Black cap,
  == Why the a/c blows hot air. ==   If this a split system, indoors and outdoors, and the outdoors unit appears to be running I suspect that you have a problem with the compressor.  Maybe you have a leak and lost our refrigerant.  Either of these can cause this symptom.  Both...
Check the fuses, check the relay and then check the fan motor.
The 1996 A4 Quattro only has a "high side" refrigerant port. It is located on the (right) side of the radiator ((left if you are viewing from the front - look for the refrigerant lines going in to the exchanger). With a single port, you must evacuate the entire system and replace the refrigerant...
By law when a system has been converted it must be labeled as so, a proper conversion has the shrader valve adapters installed 134a much larger.if you mix the 2 the oils are not compatible 134a requires PAG or POE oils, R12 uses mineral oil, mixture cause chem brake down of hose, insufficient lube...
Should be located in a removable housing at the engine end of the upper radiator hoseDrain about 1 gallon of coolant from the radiatorRemove this housingMake note how thermostat is installedClean both surfacesInstall new thermostat and replace housingRe-fill coolant slowly to prevent an air...
  == Answer ==     On my 2003 it is located behind the right front fender spray skirt. It is easily reachable without removing the front wheel, but it's easier if you jack it up, remove the wheel, pull out the two plastic pins and single torx screw holding the plastic spray skirt to the...
== Answer ==   Anyway, it is located in the lowerr radiator house, at the engine, when the engine is cold drain the coolant, remove the lower hose, pop out the thermostat, remove gasket, clean surface and replace. Fill with coolant, let it get warm, then add more coolant when the new thermotat...
The Low pressure line is the one closest to the engine. The High pressure line is the one closest to the front bumper.
The furnace that is part of your home system, controlled by either gas or electrical....
  == Answer ==   The rpm's are not at a high enough rate when the car is idleing to engage the clutch plate on the compressor.  To get the car to blow cold in park simply give it some gas to raise the rpm's. Belinda from Texas
My first guess would be the blower motor speed resister. The second guess would be the switch and/or switch plug.. I agree, It's a very common problem, the resistor goes for about $52.00 Can. Carquest has them part # RU44
You are using the wrong antifreeze!     A "broken" heater core leaks. As the engine gets hot and coolant pressure rises, it will leak worse and worse, which may be when you notice it. Radiator stop leak may work for a while then the heater radiator ("core") may start leaking again. Or the...
== Answer ==   Yes, the heater core would cause a vehicle to overheat. Most likely it would either be caused by a blockage, or some form of interruption of flow of the cooling system in the area of the heater core. It is an integral part of the cooling system, much the same as a part of the body...
Answer . Hey Debra==As far asI know there is a preasure reaief vqalve aon all a/c's. It just goes off automatically when the preasure gets too high. GoodluckJoe.
You may have a crack in the block between an oil journal and water jacket. I had an 1988 Toyota 3.0 had the same problem...Good Luck
    == Answer ==     A radiator is a type of heat exchanger. It is designed to transfer heat from the hot coolant that flows through it to the air blown through it by the fan.   Most modern cars use aluminum radiators. These radiators are made by brazing thin aluminum fins to...
%DETAILS%    == Answer ==   Hey Willie==If it comes out the cap and not the overflow jug, the cap is faulty plus what is causing it to get hot. 'Check the fans for proper operation. If it isn't smoking white smoke, it probably isn't the head gaskets. A stuck thermostat will also cause it ot...
option a. drain the radiator by the petcock bottom right fill b. buy a flushing tee and read instructions, use a garden hose while vehicle is running. c.remove lower raditor hose while vehicle is running stixk garden hose in top of radiator for a few minutes
In a 2002 Ford E-150 :    The thread on cap on the engine coolant reservoir is the pressure  cap /    radiator cap    ( so with the engine cool you add antifreeze and preferably  distilled water    into the engine coolant reservoir )    It came from the factory with a 50 /...
Answer . \nMore than likely you have a blown head gasket. Replace the gasket and check the head for cracks or if it is warped. Do not continue to drive.
noBy L024308 10-7-2008I just changed one. I took the lower part of the dash loose. To take the lower part of the dash loose remove 2 nuts on the outside corners of dash and remove a screw in each of the 2 brackets toward the center of the dash. There were 2 bolts that hold the steering wheel to the...
  == Answer ==     Buy yourself a Hayne's or Chilton's repair manual at any auto parts store. Here you will find the info you are looking for.     == Answer ==     It's actually located on the underside of the radiator, on the lower hose as opposed to the normal top hose. ...
Depends on the vehicle. Many vehicles have the blower motor accessible from under the hood. Others require a lot of stuff to be removed from the interior to get to the blower motor. If you cannot see the motor under the hood sticking out of the heater/AC box you should look at a service manual ...
take the main hoes that's is connected to the radiator and the engine and then release the two bults remobe the old thermostat remember how you took it out so you know how to put it back then put heat resistance silicone in the o ring then screw the two bult to the engine and put the hose back in to...
Answer . Unless it has been converted over to R134 it came with R12. I suggest you convert it to R134a. R12 is very expensive.
Remove the water return hose from your 1997 K 1500 water pump.  Remove the water pump belt. Remove the water pump retaining bolts.  Reverse the process to install the new water pump.
Let the engine cool and press down and twist the radiator cap to the left to remove it. Fill the radiator to the top and reinstall the cap. Check the coolant level in the overflow reservior and fill it to the fill line.
    open hood and look straight down, the port is located right next to the a/c pump.it usually has a blue or black that screws on
According to the 1997 Ford F-150 owners manual :    It came from the factory with a 50 / 50 mix of distilled water and  GREEN    colored antifreeze ( meeting Ford specification ESE-M97B44-A ) in  the    engine cooling system    * Ford states to not exceed 60% antifreeze in the...
If older then 95, it runs r12 refrigerant, and you need to have a pro use a recapture machine for the newer formula conversion. If 95 or newer, simply remove the low pressure line cap, plug on your 134 refrigerant w oil can, and fill with vehicle running and AC on. Do not over fill, most these DIY...
  on the drivers side of the engine. you need to remove air box then the hose that connects to thermostat. Still stumped? run your car until its at running temp. Then carefully touch radiator hoses. follow the colder hose to the engine and your there.
Should be located in a removable housing at the engine end of the upper radiator hose. Drain approx. 1 gallon of coolant from the radiator. remove this housing
  == Answer ==   fill up radiator with coolant within one inch of top, crank car turn heater to max .then watch antfreeze in filler neck to go down ,slowly add and wait oonce thermostat opens level will drop down lower,add more coolant to the top and put radiator cap back on. remember to keep...
  Is the question how to bleed a Buick 3800 cooling system?   I would say open that little petcock by the themostat housing and release all the air as you fill the system with coolant. When coolant comes out instead of air all the air is out.
Take a look at the water pump that is currently on the engine. if its close to the timing chain cover its short, if its approx. two inches away from it its long.
The 99 Chevy Astro uses the refrigerant R-134a. You can purchase R-134a and all the tools to recharge your A/C system from any auto parts store, most department stores, some warehouse stores, and even at convenience/gas stations. Make sure to use a high side pressure gauge and thermometer to ensure...
above the front passenger wheelwell the valve sits on top of the accumulator,when you fill must do like brail. The port is located behind the front passenger side wheel well. There is an illustrated walkthrough on focushacks.com Konasabi
my 1997 Saturn did the same thing over the summer. it went off when i changed my oil. also, check to see if you're putting the wrong kind of coolant in your car, it should only cost $40 to replace if you are.
  The thermostat on a 4.7L is located where the lower radiator hose hooks the engine.       The thermostat is located under the housing where the lower radiator hose hooks to the block.
Answer I've done a 94 - should be the same. The resistor pack from the dealer is expensive - $50 or so - I doubt if they are generic enough to be at a parts store. Consider a wrecker. It has a head/plug section and a flat "spade" about 2 inches square that goes right into the blower housing ...
  == Answer ==     Usually leaks at hose seals or refill valve.You need a "blue light" to find the leak before it can be repaired.Most good ac repair shops will check it for a small charge.   == Answer ==     any place that there is an O ring will have the possibility of leaking...
You need a new blower motor resistor. Just did the job myself and its very easy and cheap to do. Got the resistor from an online parts supplier for about $30. It's located behind the glovebox and if your flexible enough you can replace it without taking the glovebox off. It's located about dead...