Where is the air conditioner hose on a 1986 Corvette?

On late 1977-1986 Corvettes, remove the main hose assembly from the backside of the compressor. Take a white paper towel and wipe the inside of the hose assembly to check for metallic particles. This will require a system flush also.

What are the components of a corvette a / C system?

The 1963-1977E Corvettes had a complex A/C system with many valves which were prone to problems. The components consist of: compressor, POA valve, expansion valve, receiver drier, evaporator, and condenser.

How does an A / C compressor work on a C4 car?

An orifice tube was installed in the evaporator inlet tube, which eliminated the need for an expansion valve. The A/C compressor is controlled by a pressure cycling switch. The A/C compressor runs until the pressure drops below 26 PSI, then cycles back on at 45 PSI. This also eliminated the POA valve. These cars require a new A/C hose assembly.

How to install a GM compressor clutch diode?

When replacing an AC compressor clutch diode with a new GM diode, the part does not come with an instruction sheet on how to install. The diode is made into a plastic case with a wire coming out of each end. One end of the case is marked with an “X”, and the other end is marked with a “Y”.

What kind of air conditioner does a 1973 Corvette have?

The 1973-1977E Corvette had a valves-in-receiver unit. This assembly had the OP, expansion valve, and drier in one unit. These units were prone to leakage. These systems require hose and drier replacement.

When to replace air conditioner relays in corvettes?

These hoses have a nylon inner barrier. The nylon barrier hoses were introduced in late 1987 but any hose over ten years old should be replaced (R-134a systems operate at higher pressures). 1985-1989 Corvettes with an auxiliary cooling fan, a relay should be installed to turn the fan on when the A/C is on.

What is the compressor number on a corvette?

Corvette Central sells a new A/C compressor with clutch pulley, part number 455146. The A/C compressor hose, part number 455234, is also available if the current hose is in poor condition.

Why is the air conditioning not working on my Corvette?

While there are a variety of reasons your Chevrolet Corvette air conditioning won’t work, the most common 3 are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor.

What kind of problems does a C5 Corvette have?

The four most common A/C problems C5 Corvettes experience (aside from low Freon levels) are air delivery problems, temperature control issues, malfunctioning A/C control panels, and compressor failure.

What causes a C5 air conditioner to fail?

The last of the most common C5 A/C issues is compressor failure due to leakage. Compressors are the workhorses of the A/C system and are subjected to high temperatures and high PSI in their efforts to keep us cool. In the early stages of compressor failure, you will likely notice diminished cooling as the refrigerant level drops off.

What kind of air conditioning does a 1971 Corvette have?

Keep in mind that the information presented in this update is specific to a 1971 Corvette – you may find some variations if your Corvette is a different model year. General Motors changed the A/C system numerous times throughout the C3 generation.

How big is an air conditioner hose fitting?

Hose ID 5/16″, OD 3/4″ – 3/8″ Fitting Size. FH8000B. Bulk #8 Air Conditioning Hose. Hose ID 12/32″, OD 29/32″ = 1/2″ Fitting Size. FH1000B. Bulk #10 Air Conditioning Hose. Hose ID 1/2″, OD 1″ – 5/8″ Fitting Size. FH1200B. Bulk #12 Air Conditioning Hose.

What should the air pressure be on a corvette?

During the charging process take periodic pressure readings to help you determine when the system is full. The readings at 90 degrees ambient temperature, 100% relative humidity, and with the motor idling at 1,000 RPM should be 350 psi on the high side and 55 psi on the low side.