If it is like a 1999 Buick le sabre, which has a motor support though it, you have to remove two motor support bolts (on right side of car, attached to the frame) using a 15mm 1/2 inch drive socket. Then you place a 2 by 4 board on a jack and place it under the pan of the engine. Jack the engine up until there is enough space to slip the belt in place. Replace in reverse.
Alternate method:
Jack the right front wheel, remove the wheel and mud guard. It is a straight shot to the lower support. bolt. The motor support has a spacer that can be removed. This allows the insertion of the belt.
The labor at a shop is around $100.
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To replace the water pump on a 1989 Oldsmobile Regency Ninety-Eight, first disconnect the negative battery cable and drain the coolant from the radiator. Remove the serpentine belt and any components obstructing access to the water pump, such as the alternator or power steering pump. Unbolt the old water pump and clean the mating surfaces before installing the new pump with a new gasket. Finally, reassemble the components, refill the coolant, and reconnect the battery.
The 1989 Oldsmobile Regency fuse box is located beneath the drivers side dashboard. The fuse box will be near the emergency brake release.
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there is a diagram located on top of radiator also you can go to most any parts supplier and they will show you how.
To replace the heater core on a 1989 Oldsmobile Ninety Eight Regency, start by removing the dashboard and the center console to access the heater core housing. Drain the coolant from the radiator, then disconnect the heater hoses from the core. Remove the screws or clips securing the heater core, replace it with the new unit, and reassemble the components in reverse order. Lastly, refill the coolant and check for leaks before starting the vehicle.
The thermostat on a 1989 Oldsmobile 98 Regency is located in the engine compartment, specifically at the end of the upper radiator hose where it connects to the engine. To access it, you'll need to remove the upper radiator hose and the thermostat housing, which is typically secured by bolts. Make sure the engine is cool before attempting to replace the thermostat to avoid burns.
it is located to the left of the steering column
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Check the fuel pump
take off the right wheel and the cover wall and you wll see it
air compressor for the suspension