So Fix it

The emission controls on an Oldsmobile Cutlass are fully integrated with ignition and fuel system controls. All of these control systems work together to ensure the engine works efficiently with minimal production of harmful exhaust gases.

Crankcase Ventilation System

The crankcase ventilation system controls unburned fuel vapor that leaks from the pistons into the crankcase. Normally these vapors would leak into the atmosphere since they are under pressure. If left alone they contaminate the engine oil and allow sludge to build up in the crankcase. The crankcase ventilation system recycles these gases back into the air intake so they can be re-burned in the pistons. The Positive Crankcase Valve (PCV) controls how much of the gas is recycled at any given time.

Evaporative Emission Control System

The Evaporative Emission Control System (EEC) is a carbon canister that reduces emissions of fuel vapors from the fuel system. It stores fuel vapors and vents them through a filter containing activated charcoal. The charcoal absorbs vapors while the engine is not running. The charcoal releases the vapors into the air intake manifold when the engine is running. A solenoid closes the canister to air when the engine is turned off so that fuel vapor is not lost to the atmosphere.

Exhaust Gas Recirculation System

The Exhaust Gas Recirculation System, or EGR, reduces oxides of nitrogen emissions. Nitrogen oxides are often written as "NOx" and they are harmful to human and animal health. The EGR is a valve which, under certain conditions, allows some exhaust gas to recirculate into the intake manifold. The exhaust gas then cools combustion temperature and controls detonation of the fuel/air mixture. The EGR valve is mounted on the intake manifold and uses manifold vacuum to open up and vent some exhaust gas into the intake manifold. It is activated only when the engine reaches normal operating temperature. Too much exhaust flow into the intake manifold can cause stalling after a cold start or during deceleration.

Thermostatic Air Cleaner

The Thermostatic Air Cleaner (THERMAC) warms air entering the carburetor when the engine is cool and maintains a controlled air temperature into the carburetor. This reduces the amount of time the choke needs to be on and results in better fuel economy and lower harmful emissions.

Air Management System

The Air Management System injects oxygen into the exhaust ports, exhaust manifolds and catalytic converter to burn off any fuel vapor left in the exhaust gas. The system shuts off only during deceleration or rapid acceleration to prevent backfiring. The system reduces the levels of hydrocarbon and carbon-oxygen combinations in exhaust gases.

Oldsmobile installed an integral rack and pinion power steering system on the 1986 Cutlass Ciera. A belt-driven power steering pump mounted on the front of the 2.8-liter engine supplies hydraulic pressure. Over time, the power steering pump can become worn and cease to deliver sufficient pressure. Allowing the pump to run low on fluid can also damage or destroy the internal components of the pump. Replace damaged or worn pumps to restore the full function of the power steering system.

Instructions

1

Locate the blower case and motor inside the engine compartment on the passenger side firewall. Disconnect the electrical connector from the blower motor. Remove the blower motor ground terminal from the motor case, using a nut driver. Remove the blower motor retaining screws from the blower case, using a nut driver, and remove the blower assembly from the case.

2

Place the catch pan under the water pump area of the engine. Using a screwdriver, loosen the heater hose clamp at the water pump and then remove the hose from the pump nipple. Position the hose so that it will lose a minimum of coolant while remaining out of the way for the rest of the procedure.

3

Place the catch pan under the power steering pump. Remove the hydraulic lines from the pump, using a flare-nut wrench. Cap the lines with plastic caps or tape to minimize power steering fluid loss.

4

Loosen the front pump bracket-to-cylinder head bolts, using a ratchet and socket. Loosen the rear pump bracket adjuster nut, using a ratchet and socket. Push the bottom of the power steering pump toward the engine to loosen the pump drive belt. Remove the belt from the pump pulley. Finish removing the loosened bolts and nuts and then remove the pump from the engine.

5

Insert the smooth end of the threaded puller assembly into the center hole in the pulley. Install the split puller collar that most closely fits the size of the center boss on the pulley. Slide the outer collar in place over the split collar. Hold the bottom nut on the threaded puller in place with a wrench and turn the threaded puller clockwise by hand until it bottoms on the pump shaft. Turn the threaded puller using a ratchet and socket until the pulley separates from the pump shaft.

6

Remove the rear pump bracket and front pump bracket from the old pump, using a ratchet and socket. Install the front and rear pump brackets on the new pump. Tighten the rear pump bracket nuts to 35 foot-pounds, using a foot-pound torque wrench and socket. Tighten the front pump bracket bolts to 25 foot-pounds.

7

Place the pulley on the pump shaft. Thread the pulley installation tool into the threaded portion of the pump shaft. Install the washer and nut on the installation tool. Hold the top of the installation tool with a wrench and tighten the nut with another wrench until the tool bottoms out. Remove the tool and ensure that the outer edge of the pulley boss is flush with the end of the pump shaft.

8

Position the pump on the engine. Install the front pump bracket-to-cylinder bolts and the rear pump bracket adjuster nut and tighten only finger tight. Install the pump drive belt on the pump pulley. Pull the pump bottom away from the engine to tighten the belt and then tighten the rear pump bracket adjuster nut to 35 foot-pounds, using a foot-pound torque wrench and socket. Tighten the front bracket-to-cylinder head bolts to 25 foot-pounds.

9

Install the hydraulic lines on the power steering pump. Tighten them securely, using a flare-nut wrench.

10

Install the heater hose on the water pump. Tighten the hose clamp securely, using a screwdriver.

11

Install the blower assembly in the blower case. Install the blower motor mounting screws and the blower motor ground terminal, using a nut-driver. Connect the blower motor electrical connector.

12

Use a floor jack to raise the front of the vehicle. Support the vehicle securely with two jack stands. Chock the rear wheels.

13

Turn the steering wheel fully to the left steering stop. Add Dexron II ATF to the power steering pump reservoir up to the Full Cold mark on the dipstick and leave the cap off the pump. Have a helper turn the steering wheel from lock to lock at least 20 times with the engine off while you observe the fluid in the reservoir for bubbles. Tighten the pump connections and check for leaks if bubbles are present. Maintain the fluid level in the reservoir during this procedure and start over after tightening the fittings if a leak is discovered. Add fluid up to the Full Cold mark and install the cap. Center the wheels and lower the vehicle.

14

Start the engine and run it for two minutes. Turn the steering wheel from lock to lock and verify that the operation is smooth and there is no groaning or whining noise at the pump during operation. Check the system connections for leaks. Turn the engine off. Check and top off the fluid level in the reservoir.

15

Remove the radiator pressure cap from the radiator and top off the coolant level in the radiator. Make certain the coolant level is up to the Full Cold mark in the coolant overflow reservoir.

16

Start the engine. Turn the passenger compartment heater controls to the On position and allow the engine to warm up to full operating temperature. Turn the engine off. Allow the engine to cool. Check the coolant level in the coolant overflow reservoir and, if necessary, add coolant to bring it up to the Full Hot mark.

Resetting the antilock braking system (ABS) light on your 2001 Oldsmobile Aurora luxury sports sedan is just a matter of obtaining an OBD II scan tool. The scan tool is a handheld electronic device that is used both to read and to erase automobile error codes. The job requires no technical skills on your part, and should take you no longer than 15 minutes to complete.

Instructions

1

Put the key into the ignition and turn it to the "On/Off" position, taking care not to start the engine.

2

Plug the OBD II scan tool into the diagnostic port on the drivers side dash. This port is the same size and shape as the connector cable on the scan tool. Dont force the cable into the port; rotate it to fit the outlet.

3

Wait for the scan tool to turn on. Select "Read Codes" on the menu and then "Clear All Codes." Wait for the scan tool to complete the task and return to the main menu.

4

Unplug the scan tool from the port and start the engine. Verify that the ABS light has shut off.