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I took everything off the radiator except the two hoses that seem to go to freon, how do you take them off

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If your trying to take your raditor out you will have to unbolt the whole condensor by some screws on the outside behind the bumper. It is easier doing that way.

Posted on Jan 05, 2011


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Need to know what the evap hose looks like

A/C systems have two hoses, a smaller diameter one for high pressure and a larger diameter one for low pressure. High pressure freon is compressed in the compressor and and pumped under pressure in the smaller hose to the evaporator where the freon is expanded/evaporated and becomes cooler via the expansion process. Here the freon absorbs heat. The larger hose then carries the expanded/evaporated freon to the radiator where it is cooled, then on to the compressor.

Oct 17, 2016 | Cars & Trucks

1 Answer

1994 Toyota 4runner Overheating

hi. is the replacement thermostat the same as the one you took out.
have you tried flushing out your radiator. there may also be air lock
in the hose...good luck

Mar 04, 2014 | Toyota 4Runner Cars & Trucks

1 Answer

I have a 99 camaro V6. About 3 weeks ago it started running hot. I replaced the thermostat and flushed the radiator and added more coolant. The tempature passes 260 and the fan comes on after like 5...

i have the same problem. it may be a good idea to try and flush all the hoses individually. are you seeing any yellow mustard like gunk on your radiator cap? i took off my water pump and everything seems to be ok with it. here's a few things to check up on. the water pump, the radiator cap may need to be replaced because it may be losing pressure. could be a crack in the radiator, or a soft/week hose. you could take it to a shop and have them do a pressure test to help narrow down the problem.

Dec 15, 2011 | 1999 Chevrolet Camaro

1 Answer

Hi John here PA, I have a 1997 BMW 740il with overheating problems, about 3-4 months ago I blew a upper radiator hose, until then, except for topping off the coolant level every so often everything was...

Best test,,NAPA sells a combustion leak tester(balkamp #700-1006) A tube of liquid that will change color if combustion gas is in the cooling system.Thinking you may be right about a head gasket problem or possibly a crack in the head.
It comes with instructions and is cheaper than having a shop guess at the trouble.

Apr 18, 2011 | 1997 BMW 7 Series

1 Answer

Air conditioning not too cold ??

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Let me explain in layman's terms how the air conditioning (AC) system works and what could be happening to your car.

Like your body, the air conditioning compressor is the heart of the AC system, and Freon is the blood. The compressor pumps Freon throughout the AC system, either the older type R12 which costs as much as gold it seems these days, or the new environmentally-friendly R134A Freon. This Freon is a gas and liquid combination that is compressed and circulated throughout the air conditioning system. The compressed Freon is pushed through the system under pressure and is passed through different sized metal and rubber hoses and a special valve called an expansion valve that cause the gas to expand and contract.

This expansion and contraction makes the Freon gas very cold. This cold gas makes its way via metal lines into the dash area of your vehicle to the evaporator core. This evaporator core is like a small radiator, except it has cold Freon circulating inside and not hot antifreeze. A small fan (the AC blower fan which you control from the control panel on the dash) sits in front of the evaporator core and blows air across this cold evaporator and then through the vents inside your vehicle.

The other objective of the air conditioning system is to remove the heat from inside the cab of the vehicle. This heat is removed by the Freon with the help of the AC condenser located at the front of the car (usually in front of the radiator). The Freon coming back from the evaporator carries the heat from the cab to the condenser via rubber and metal hoses. Just like your radiator, the condenser is lightweight aluminum with many internal winding coils.
The Freon travels through these coils, and in between these coils are small slits or fins that the Freon is forced through. The condenser will have an electric cooling fan mounted in front or behind it to push or pull air through these fins to remove the heat from the Freon. Some vehicles still use the old fashioned fan blade driven by the engine to pull air across the radiator and the condenser.
Now I know that is just a tidbit of information on how the air conditioning system works, and it is very general, but I wanted you to know what to look for to give you insight as to what might be happening with your vehicle.
A few causes of low cooling efficiency or no cooling at all at idle are:

Lack of air flow across the condenser. Make sure the electric cooling fan motor near the condenser is coming on, or in models that are equipped with a fan blade make sure this fan is turning and is turning very fast.

Low Freon levels. Freon level and pressure should be checked by your certified air conditioning mechanic.

Overheating. If the engine is running hot or overheating, it can have a noticeable negative affect on the air conditioning system. Some cars have two electric cooling fans, one for the air conditioning condenser and the other for the radiator. Make sure they are both working properly. Usually at idle on a hot day with the AC on both fans will be on.

When the vehicle is traveling at freeway speeds, the compressor is pumping the Freon throughout the system much faster and harder than at idle. There is a dramatic increase in air flow across the condenser due to 55 mph winds, and the engine is usually operating at a cooler, more efficient temperature as well, thus allowing the air conditioning system to operate efficiently.
Note: An air conditioning system that is somewhat low on Freon can still feel comfortable at freeway speeds due to the added air flow across the condenser which can overcome the ill effects of slightly low Freon. Periodic air conditioning performance checks by your mechanic are the best way to keep the system in great shape.

Hope this helps.


Oct 08, 2010 | 1998 Cadillac DeVille

1 Answer

Changing out radiators

you dont have to seal line as long as you are going to b putting back together, however u will have to have ac vacuated, and recharged, normally 1oz oil for everypound freon hope all this helps

Apr 14, 2010 | 1997 Dodge Caravan

1 Answer

Hit a chunk of ice on road replaced radiator field with fluid and now i have know heat and the water does not seem to be moving took bottom heater core hose off and no water comes out replace thermostat...

You might need to check and see if there is a bleeder valve on the radiator hoses or lines some were. Some newer cars have to be blead. Follow all lines and hoses assc. with the radiator.

Feb 07, 2010 | 2007 Chevrolet Cobalt Coupe

1 Answer

Freon tank in the way. The freon is low, but is it still under a lot of pressure?

The A/C CONDENSER does not have to be removed in order to replace the RADIATOR, Just take off radiator hold down cover, hose, lines and remove . Hope this helps

May 16, 2009 | 1993 Cadillac Eldorado

2 Answers

2000 Jimmy Blows Cold Air from Heat

check radiator you may have a pin hole

Dec 28, 2008 | 2000 GMC Jimmy

2 Answers

1992 honda ex

The Freon goes into the "suction" hose/pipe assembly. There will be a service port on this hose. The low side (blue) hose of the manifold gauge set gets connected to this fitting. The suction hose can be identified by it's larger diameter (compared to the discharge and liquid hoses). The suction hose will run from the compressor across the top of the radiator (slightly behind the radiator), then back towards the firewall on the passenger's side of the engine compartment. The service port is generally closer to the firewall, than to the compressor.

Aug 31, 2008 | 1992 Honda Accord

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