GM: Electra/Park Avenue/Ninety-Eight 1990-1993

Engine

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Fig. Fig. 1 Engine mounting-Vin C engine



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Fig. Fig. 2 Front engine mount assembly-Vins L & 1 engines



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Fig. Fig. 3 Front engine mounting bracket-Vins L & 1 engines

REMOVAL & INSTALLATION




CAUTION
When draining coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze, and quite likely to drink any is is left in an uncovered container or puddles on the ground. This will prove fatal in sufficient quantity. Therefore, drain coolant into a sealable container. Coolant should be reused Unless it is contaminated or several years old. The epa warns that prolonged contact with used engine oil may cause a number of skin disorders including cancer. You should make every effort to minimize your exposure to engine oil. Protective gloves should be worn when dealing with engine oil. Wash exposed skin immediately after contact with oil with soap and water, or waterless hand cleaner.

3.8L VIN C Engine
  1. Disconnect the negative battery cable. Using a scribing tool, matchmark the hood hinges and remove the hood.
  2.  
  3. Label and disconnect the air flow sensor wiring. Depressurize the fuel system.
  4.  
  5. Remove the air intake duct. Remove the throttle cable and bracket from the throttle body. Place a clean drain pan under the radiator, open the drain cock and drain the cooling system.
  6.  
  7. Raise and safely support the vehicle.
  8.  
  9. Remove the exhaust pipe-to-exhaust manifold bolts and separate the exhaust pipe.
  10.  
  11. Remove the engine mount bolts.
  12.  
  13. If equipped with a driveline vibration absorber, remove the bolts and disconnect the absorber.
  14.  
  15. Label and disconnect the electrical connectors from the starter. Remove the starter-to-engine bolts and the starter.
  16.  
  17. If equipped with air conditioning, remove the compressor mounting bolts and position aside. Do not discharge the system or disconnect the refrigerant lines.
  18.  
  19. Place a pan under the power steering gear. Disconnect the hydraulic lines and drain the fluid. Use a length of wire to hold the hoses aside.
  20.  
  21. Remove the lower transaxle-to-engine bolts.
  22.  

One bolt is situated between the transaxle case and the engine block. It is installed in the opposite direction to the other bolts.

  1. Remove the flywheel cover. Matchmark the flexplate-to-torque converter relationship to insure proper alignment upon installation. Remove the flexplate-to-torque converter bolts.
  2.  
  3. Remove the engine support bracket-to-transaxle bolts and the bracket. Lower the vehicle.
  4.  
  5. Attach an engine hoist to the engine lift brackets and support the engine.
  6.  
  7. Remove the radiator and heater hoses from the engine and position them aside.
  8.  
  9. Label and disconnect the hoses from the vacuum modulator and canister purge lines.
  10.  
  11. Label and disconnect the engine electrical wiring harness(es) and position them out of way.
  12.  
  13. Remove the upper transaxle-to-engine bolts.
  14.  
  15. Carefully remove the engine from the vehicle.
  16.  

To install:

  1. Install the engine in the vehicle.
  2.  
  3. Connect the reposition the engine electrical wiring harness, secure the bracket.
  4.  
  5. Connect the hoses to the vacuum modulator and the canister purge lines.
  6.  
  7. Install the radiator and the heater hoses.
  8.  
  9. Remove the engine hoist. Raise and safely support the vehicle.
  10.  
  11. Replace the engine support bracket-to-transaxle bolts.
  12.  
  13. Replace the upper transaxle-to-engine bolts. Install the engine mount bolts and tighten to 70 ft. lbs. (95 Nm).
  14.  
  15. Install the torque converter and tighten the bolts to 46 ft. lbs. (62 Nm). Replace the flywheel cover.
  16.  
  17. Install the lower transaxle-to-engine bolts, tighten to 55 ft. lbs. (75 Nm).
  18.  
  19. Connect the power steering hydraulic lines to the power steering gear.
  20.  
  21. Install the air conditioning compressor, if equipped.
  22.  
  23. Install the starter and tighten the mounting bolts to 35 ft. lbs. (47 Nm).
  24.  
  25. Connect the electrical connections at the starter motor.
  26.  
  27. Connect the driveline vibration absorber, if equipped.
  28.  
  29. Install the exhaust pipe and replace the exhaust pipe-to-manifold bolts.
  30.  
  31. Lower the vehicle.
  32.  
  33. Connect the air flow sensor wiring. Install the hood assembly.
  34.  
  35. Connect the negative battery cable. Refill the cooling system.
  36.  
  37. Start the engine, allow it to reach normal operating temperatures and check for leaks.
  38.  

3.8L VINS L & 1 Engines
  1. Disconnect the negative battery cable. Using a scribing tool, matchmark the hood hinges and remove the hood.
  2.  
  3. Depressurize the fuel system.
  4.  
  5. Drain the coolant and the engine oil from the vehicle.
  6.  
  7. Remove the strut tower cross brace. Disconnect the windshield washer, radiator and heater supply hoses.
  8.  
  9. Disconnect the wiring to the starter. Disconnect the main wiring at the harness near the relay center.
  10.  
  11. Remove the drive belt(s). Disconnect the power steering pump and set off to the side.
  12.  
  13. Remove the air inlet duct and the air cleaner assembly. Disconnect the throttle cable from the linkage.
  14.  
  15. Disconnect the wiring harness connectors from the mat sensor, the throttle position switch, the idle air control valve and the oxygen sensor.
  16.  
  17. Disconnect the ignition coil ground strap from the fender inner panel. Disconnect the fuel lines from the fuel rail and from the pressure regulator.
  18.  
  19. Disconnect the emission control hoses from the throttle body connections.
  20.  
  21. Disconnect the brake booster and heater control hoses from the vacuum connections.
  22.  
  23. Raise and safely support the vehicle.
  24.  
  25. Disconnect the exhaust pipe from the right side manifold and disconnect the vacuum lines from the cruise control and servo assembly.
  26.  
  27. Attach an engine lifting device to the engine and raise so it begins to support the engine.
  28.  
  29. Disconnect the air conditioner compressor and tie back away from the engine. If equipped with an engine oil cooler, disconnect the cooler lines.
  30.  
  31. Remove the front engine mount and remove the right front engine to transaxle bracket.
  32.  
  33. Support the transaxle and remove the engine to transaxle bolts. Remove the flywheel cover.
  34.  
  35. Remove the torque converter to flywheel bolts and use a scribe to mark the proper flywheel to torque converter relationship.
  36.  
  37. Separate the engine from the transaxle and remove the engine from the vehicle.
  38.  

To install:

  1. Install the engine in the vehicle.
  2.  
  3. Install the engine to transaxle bolts. Install the right front engine to transaxle bracket.
  4.  
  5. Install the front engine mount.
  6.  
  7. Install the torque converter to flywheel bolts, making sure flywheel and converter are aligned as before.
  8.  
  9. Install the flywheel cover and the oil cooler lines, if equipped.
  10.  
  11. Install the air conditioning compressor. Connect the cruise control and vacuum hoses at the servo.
  12.  
  13. Connect the exhaust pipe to the right side manifold.
  14.  
  15. Connect the wiring harness connectors to the mat sensor, throttle position switch, idle air control valve and the oxygen sensor.
  16.  
  17. Connect the throttle cable to the linkage and to the mounting bracket. Install the air intake duct and the air cleaner.
  18.  
  19. Install the power steering pump and drive belt(s).
  20.  
  21. Connect the main wiring harness to the engine and battery connectors.
  22.  
  23. Connect the wiring to the starter and connect the windshield washer, radiator and heater supply hoses.
  24.  
  25. Fill the coolant to the proper level and refill the engine oil.
  26.  
  27. Connect the negative battery cable.
  28.  
  29. Start the engine and check for fluid or oil leakage.
  30.  

 
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