Question about 1997 Jaguar XJ6

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AIR CONDITIONING where do i top up the gas and could i do it myself. also where is the expansion valve situated.do you know where i could get a good cd workshop manual from sent for one but it is a bit ****.

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  • Jaguar Master
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Not a DIY job unless you have a proper machine ,and only r 134 gas 1.2 kilos

Posted on Jan 31, 2009

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2 Answers

Do i need to drain the freon from my car when changing the expansion valve?


You are not permitted by law to discharge refrigerant gas into the atmosphere. It has to be collected using a vacuum device and recycled. You also need gauges and the correct amount or refrigerant gas by weight, which incidentally is not 'Freon' and was banned about 20 years ago. You need a professional to work on your system.

Mar 23, 2016 | Cars & Trucks

1 Answer

Where is the expansion valve on a 1998 Nissan maxima


the expansion valve (TX) valve is on the inlet side of the evaporator under the dash (air conditioning)

Aug 05, 2015 | 1998 Nissan Maxima

1 Answer

1994 nissan pu 4x4 3.0 v6 air conditioning problem is cooling some. Low side 60 lbs of pressure: cooling on highway. At idle 60 lbs needle shakes somewhat. Was at one time cooling good this summer....


What is the high side reading? That's too high for low side maybe overcharged. Plugged expansion valve (no orifice tube) will cause low to neg psi low side.

Aug 19, 2014 | Nissan Cars & Trucks

1 Answer

Wht is a TXV


Simply it's a valve in a refrigeration system that controls or meters how much coolant is allowed into the evaporator.
A thermal expansion valve (often abbreviated as TEV, TXV, or TX valve) is a component in refrigeration and air conditioning systems that controls the amount of refrigerant flow into the evaporator thereby controlling the superheating at the outlet of the evaporator. Thermal expansion valves are often referred to generically as "metering devices".
A thermal expansion valve is a key element to a heat pump; the cycle that makes air conditioning, or air cooling, possible. A basic refrigeration cycle consists of four major elements, a compressor, a condenser, a metering device and an evaporator. As a refrigerant passes through a circuit containing these four elements, air conditioning occurs. The cycle starts when refrigerant enters the compressor in a low pressure, low temperature, gaseous form. The refrigerant is compressed by the compressor to a high pressure-and-temperature gaseous state. The high pressure-and-temperature gas then enters the condenser. The condenser precipitates the high pressure-and-temperature gas to a high pressure liquid by transferring heat to a lower temperature medium, usually ambient air. The high pressure liquid then enters the expansion valve where the TX valve allows a portion of the refrigerant to enter the evaporator. In order for the higher temperature fluid to cool, the flow must be limited into the evaporator to keep the pressure low and allow expansion back into the gas phase. The TXV has sensing bulbs connected to the suction line of the refrigerant piping. The sensing bulbs give temperature readings to the TXV to adjust flow of refrigerant.[2]
http://en.wikipedia.org/wiki/Thermal_expansion_valve

Jun 18, 2014 | 2006 Saturn Vue

1 Answer

How to replace expansion valve on a 2005 rx8


1.) Discharge air conditioning.
2.) Remove dashboard
3.) Replace expansion valve.

ive never seen an expansion valve in an rx8 go.....
usually its the climate control head. The blend knob stops working...

May 18, 2014 | 1999 Mazda 626

1 Answer

Air conditioner blows cool not cold air


- Keep the knob on RECIR and not FRESH.
- Put the air con ON, blower on max speed.
- Open the hood, inspect the inspection window glass located on the liquid line.
- If foam like bubbles are seen, charge the refrigerant gas, till the glass window is seen clear. Never overcharge the system.
- If the problem persists, check the following:
Refrigerant volume
Refrigerant pressure
Heater control base (for Hatchback)
Heater control base (for Sedan)
Air conditioning pressure sensor
Compressor and pulley
Expansion valve -
Air conditioning amplifier
ECM
CAN communication
The following diagram may help you identify the components.


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Feb 18, 2014 | 2000 Toyota ECHO

1 Answer

Air conditioning not too cold ??


Hello,
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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.

Goodluck

Oct 08, 2010 | 1998 Cadillac DeVille

1 Answer

AIR CON NOT WORKING - NO COOLING


Could be an expansion valve or as well as the car might need a top-up of gas?

Nov 10, 2008 | 1994 Nissan Sentra 4-Door

3 Answers

The air conditioning,the blower fan everything stopped working, on 2002 Nissan Sentra. Does anyone have any suggestions?


One suggestion. Have you checked the fuses ?

I would check the AC or blower fuse to start with. If you have the drivers manual it will show you where the fuse box is. Typically there are at least two boxes to check. One in the Engine compartment and one in the passenger cabin.

Look inside the lid of the fuse box to see which fuse may apply to the AC circuits or the blower and check to see if they are blow. the metal link between the two posts that plug in. If the link is missing you need to replace the fuse with one of the same rating. Make sure you know where you took the fuse out from and put it back in the same slot if its good. Check all the main fuses if possible to see if any have blown and replace if they have.

Aug 12, 2008 | 2002 Nissan Sentra

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