Question about BMW 545

1 Answer

I wanna know if is very import for the cooling system the gas for the AC, have to be charge, because the auxiliar fan is working but the condenser is out of gas.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 3,092 Answers

No it don't. it's like if your car was made with no a/c, the fan is on due to keeping engine from over heating, when main fan needs help to keep it cool it will also come on.

Posted on Jul 14, 2010

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Where is the low pressure ac port located on a 1999 grand am v6 looking down from the front of the engine


automotive ac systems have all the same basic components that house systems have , there just smaller .

if one insists on repairing there own ac system a bit of basic know how is required to work on it safely

first it works simply by compressing a gas and then forcing it over an obstruction (orifice) this cools gas then it goes thru condenser (in dash) and fan blows air over it , taking cool air away to be replaced with warm air , this causes gas to flow back to dryer then to compressor to start the process all over again (circle ) now the gas coming off compressor is high about 150 to 200 psi this is very dangerous if it gets out of pipe !! now most car systems along with home systems have two service ports that allow one to access what's inside system , this is why its sort of important to correctly id the type of service port your using , because you cant add any gas into high pressure port , but instead it will come out of that port and severely damage any thing attached to port and anyone holding it as well , now most mfg know this and purposely make the two ports different sizes (but not allways) for safety reasons , low side of the system should have around 20 to 35 psi in them this is why its very important to Id the correct fitting !!

Jun 02, 2017 | AC Cars & Trucks

1 Answer

On my 2006 ac works good when engine is cool, in stop & go traffic it blows hot air & head pressure gets high in ac, car temp is ok what's wrong


How do you know head pressure is high? Do you have an auxiliary electric cooling fan that is not coming on in this situation? It should be in front of the AC condensing coil. There may be a switch tied to the system that is bad. This switch is sometimes activated by the pressure in the high-pressure line to the condenser coil. If there is not enough freon (134a) the pressure will not be high enough to activate the cooling fan switch. I recently added one can to my system and it made the fan run whereas it did not before adding the freon.

Jul 05, 2015 | AC Cars & Trucks

2 Answers

I saw you answer regarding the fuses for AC on the Acura RDX 2008. My AC starting blowing hit air I tried to recharge it but it was full so I know that's not the problem . The pressure was high. The person...


More then likely the valve is open on the heater hose , there are two small hoses running from the engine radiator to the heater radiator , one has a valve or tap that is open to heat and closed when the air con is engaged, make sure it's not frozen open.

Jul 24, 2014 | Cars & Trucks

2 Answers

My a/c is working but compressor is not working.


this will be from the head pressure being excessive as the gas is not being converted to liquid in the condenser. The main reason being that there is insufficient air passing through the condenser from the ac fan not working. There has to be an extra fan in front of the condenser to maintain air flow at all times the ac is operating. The second reason is excessive amount of gas in the system. Have the pressures checked by an accredited ac shop.

Jun 07, 2014 | 2003 Honda CR-V

1 Answer

Ac problem at idle after converting over to 134a from r12


to convert from r12 to r 134 a the entire system has to be changed
that is condensor, compressor, evaporator, hoses ,the lot because r134a runs at much higher pressures than r12 ( nearly 3 times higher in psi)
it needs different gauges and has different fill connections so that the gasses cannot be mixed
to make it worse the oil used in the compressor is different because of the different gas and is not compatible with the r12
there was nothing wrong with r12 gas but companies and customers were "hoodwinked" into believing that the r12 was bad for the atmosphere and r134a was the answer
just as you have been " hoodwinked" by the person into getting a gas change over without being fully informed of what was involved and why
with r134a gas there has to be a fan in front of the condenser that works immediately the ac is switched on as the temp of the gas being converted back to liquid is much higher because of the higher pressure need to convert it back from gas to liquid
without that fan the system starts to circulate gas and so the evaporation of the liquid at the evaporator in the car is lost and no heat from the car is transferred back outside
what it means is this --- if you can get r12 gas , change the compressor back to an r12 compressor, have the system completely flushed, vacuumed down for at least 1/2 hour and then refill with r12
If on the other hand you have to use r134a because that is the only compatible compressor available then the evaporator , hoses and condenser have to be changed as well and that means a new ac kit basically
find yourself an accredited ac specialist shops and get quotes

Mar 03, 2017 | 1993 Chevrolet Cavalier

1 Answer

Air conditioning not too cold ??


Hello,
google_protectAndRun("ads_core.google_render_ad", google_handleError, google_render_ad); google_protectAndRun("ads_core.google_render_ad", google_handleError, google_render_ad);
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.

Goodluck

Oct 08, 2010 | 1998 Cadillac DeVille

2 Answers

2004 VOLKSWAGEN PASSAT 4 DOOR 4 CYLINDER TURBO Air Conditioning System ? A/C System only cools (moderately) at highway speed. Take to shop and tech?s recharge system... does not cool... They say...


Take it back and make them fix it, if they refuse sue them in small claims and/or contact your state's consumer protection office (or bureau of automotive repair if you have one) and file a formal complaint, that will get them moving.

Apr 24, 2017 | 2004 Volkswagen Passat

1 Answer

I have 1997 mercedes-benz E320, the ac blows cold at 35 mph and over but warms up under that speed, i tried charging system last year but it acted the same


Check if condenser fan is working.
When a/c is on , electric fan on the radiator should come on.
If it's not , system may overheat and shut down , when you move there is natural air flow through condenser , when you stop , if fan is not on no air flow (cooling) through condenser , system pressure rising and safety switch shuts off the compressor.

Jul 25, 2010 | Mercedes-Benz E320 Cars & Trucks

2 Answers

While running the air conditioning, the air cools and then warms and eventually cools for a little bit again. I think the water pump is what's needed here? what is the big bolt behind the fan?


It is unlikely that the water pump is causing the trouble you describe. The large hex behind the fan is what you would turn to remove the fan clutch from the water pump shaft. This fan clutch is supposed to detect heated air coming through the AC condenser and radiator and engage the fan more positively with the water pump shaft when more air needs to me moved to cool the radiator and AC condenser. The fan clutch could be bad or the AC system may not be properly charged--either of these conditions could cause the problem you describe.

Feb 25, 2010 | 2005 Dodge Ram 1500

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

37 people viewed this question

Ask a Question

Usually answered in minutes!

Top BMW Experts

Frankie B

Level 2 Expert

65 Answers

Fred Sops

Level 2 Expert

272 Answers

Doberman

Level 2 Expert

254 Answers

Are you a BMW Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...