How to remove air pump from Corvette L98?

Remove belt and disconnect the negative battery terminal. Remove bolt from alternator top support that links air pump to top of alternator. Loosen rear and lower alternator mounting bolts. Remove 2 bolts and 1 nut from air pump mounting bracket, located underneath air pump Pic 1 and 2. Slide pump forward and remove.

What kind of fan do I need for a 1985 Corvette?

On 1985-1989 Corvettes with an auxiliary cooling fan, a relay should be installed to turn the fan on when the A/C is on. The 1985-1989 Corvette without an auxiliary cooling fan should have a 12” pusher fan installed in front of the A/C condenser.

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.

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.

Why is the pulley not engaging the clutch?

Turn the air conditioning controls to MAX AC and start the engine. Then look at the front of the compressor clutch. Both the pulley and the clutch should be spinning. That means the clutch has properly engaged with the pulley. If only the pulley is turning, but the clutch disc isn’t, there’s a problem somewhere in the system.

Can a pulley be removed from an A / C compressor?

The bearing can be hard to remove because the steel bearing in contact with the aluminum frame will cause a dissimilar metal weld. Clean off all the surfaces and threads using a wire brush and / or some sand paper. Note: The white circular object is the magnetic coil that activates the A/C.

How much is a pulley bearing on a GM A / C compressor?

The roller bearing is in the center. AMG sells the bearing for 30 or 40 bucks and the bearing /pulley combination was 250.00. I have a price of around 200.00 for a complete rebuilt A/C compressor in my parts cross reference so I knew I had to be able to get a pulley for way less.

What causes an L-98 corvette to start?

When you start an L-98 engine Corvette, a series of events take place that causes the engine to run. Knowing the sequence will help you troubleshoot no start conditions. Fuel Rail Pressurization: When you first turn the key to the “on” position, the fuel pump will run for 2 seconds pressurizing the fuel rails.

When did corvette go back to MAF engine?

Corvette used this approach in the 1990 and 1991 L-98 engines and in the 1992 and 1993 LT-1 engines. With the 1994 model C4, they went back to the MAF system. Note that MAF based systems are far more accurate since they measure air flow directly whereas the MAP system infers air flow indirectly.

What’s the idle speed on a 1989 c4vettes L98?

(This is how the 1985 through 1989 L-98 works. For information on the 1990 and 1991 L-98 variant, see the Note below). The engine should show an initial idle speed of around 900-1100 RPM and then slowly diminish to 600-700 RPM unless the air conditioner is on in which case it will run at around 800 RPM.

How to remove air pump from Corvette L98?