What kind of air conditioner does a corvette have?

So, let’s begin with a diagram of the air condition system you’d find in a model year 1968-1972 Corvette. The cold air that blows through your vents is generated by an A/C system consisting of several key components which are shown in the diagram above.

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.

How to convert an R12 compressor to a R134a?

R12 to R134a Conversion steps. The first step is first to make sure that the AC system is empty. Discharge and make sure to recycle it properly. Make sure your AC compressor is in good shape, otherwise replace it. Flush your current system entirely of R12 without leaving any traces of the R12 in it.

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.

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 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.

How is the expansion valve on a Corvette maintained?

The latter is maintained by a temperature sensor in the POA valve which shuts the compressor off if the temperature gets too low. The POA Valve and the Expansion Valve are also connected by a thin copper line called an Equalizer Line. In addition, the expansion valve has a temperature probe connected to the Evaporator outlet.

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.

How big of a vacuum do you need for an A / C system?

Pulling a vacuum of 29.9 inches is recommended and will vaporize any moisture in the system while also purging any air from the A/C system. The vacuum should be held for one hour once the vacuum has been achieved. After evacuation, shut all of the valves tightly and let the system sit for a while. The vacuum should hold.

Where does the VAC come from on a corvette?

Bob, I’m not sure WHERE the vacuum comes from off of the engine, but I would assume it comes from the rear vacuum fitting, just in front of the distributor. Here’s another vac diagram for the HVAC, that’s a little more detailed, but still doesn’t specify where the “source” vqac comes from…. (click for Texas -sized view!) NCRS

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 to remove the cooling system from a 1984 Corvette?

Drain the cooling system. Remove the drive belt. Remove the water pump pulley. Remove the AIR pump pulley. Remove the air management valve adapter. Remove the AIR pump. Disconnect the fuel inlet and return lines. Remove the rear A/C compressor braces. Remove the lower A/C compressor mounting bolt.

What should the temperature be on a corvette radiator?

The radiator should be hot along the left side and warm along the right side, with an even temperature rise from right to left. Cold spots in the radiator indicate clogged sections Disconnect negative battery cable. Drain cooling system. Remove upper radiator hose. Remove lower radiator hose. Remove overflow hose at radiator.

What kind of coolant does a corvette use?

COOLANT: Your Corvette was designed to use a 50-50 mix of ethylene glycol-based coolant/anti-freeze (the “green stuff”); the new “Dexcool” (“red stuff”) shares the same ethylene glycol base, but has a different additive package.

How is cold air generated in an A / C system?

The cold air that blows through your vents is generated by an A/C system consisting of several key components which are shown in the diagram above. The process starts at the compressor where power from the engine is used to compress the refrigerant to a small fraction of its original volume.

Why is it important to keep your corvette cool?

Keeping your Corvette’s engine cool, especially during summer temperatures or performance runs, can make the difference between cruising along the coastline in comfort or walking along the roadside back home. We’ve assembled some common steps below to help maintain your vehicle for those long runs on sunny days.

What’s the best way to cool a corvette radiator?

You might be able to knock off a few degrees with a synthetic oil, and run a 60/40 (more water) mix to get through the summer months. You could go straight water for a parade cruise or track day, then change it back when you return. Electric fans can boost the radiator’s capability to remove this extra heat load.

Why is the lower radiator hose on my Corvette not working?

Older Corvettes have a metal coil spring inside the lower radiator hose to prevent the hose from collapsing when water is flowing at maximum. If you can squeeze this hose closed with your hand, then the spring is probably missing and/or the hose might be defective. In this case, you probably need a new hose.

What kind of engine did the 1969 Corvette have?

New Corvette power team features for ’69 include new, larger 350 CID 300-hp engine as standard, or a 350-hp version is available, sturdier engine construction on the 350 CID, thicker bulkheads and main bearing caps, firmer crankshaft clamping with longer washer head bolts, extra firm 4-bolt main bearing cap attachment and improved cooling system.

What kind of air conditioner does a corvette have?