Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBUICK1994ROADMASTER ESTATE WAGON V8-350 5.7LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMDISTRIBUTORSERVICE AND REPAIR
1994 Buick Roadmaster Estate Wagon V8-350 5.7L
Distributor: Service and Repair
1994 Buick Roadmaster Estate Wagon V8-350 5.7LSECTION Service and Repair
Remove or Disconnect:
1. Disconnect negative battery cable
2. Disconnect IAT sensor harness connector
3. Remove air intake duct
4. Remove serpentine drive belt
5. Drain engine cooling system
6. Disconnect three water pump hoses
7. Remove water pump assembly
8. Remove crankshaft torsional damper
9. Remove belt tensioner
10. Remove spark plug secondary cables from distributor. Twist boot 1/2 turn and pull only on the boot to remove wire from distributor.
11. Disconnect four terminal PCM connector from distributor.
12. Remove three distributor mounting bolts. Pull distributor forward until drive shaft disengages from engine. Mark the top surface of the shaft to denote location during reassembly.
Install or Connect:
1. Install distributor shaft into distributor, if removed. Turn shaft until the mark is on top.
2. Place distributor and shaft assembly into engine.
3. Tighten three distributor bolts
Torque Value: 11 N-m (8 lb.ft.)
4. Connect four terminal PCM connector to distributor
5. Connect spark plug cables to distributor
6. Install belt tensioner
7. Install crankshaft torsional damper to engine
8. Connect coolant temperature sensor connector
9. Install water pump
10. Connect three water hoses to water pump
11. Fill engine with coolant
12. Install serpentine drive belt
13. Install air intake duct
14. Connect intake air temperature (IAT) sensor connector
15. Connect and tighten negative battery cable
Torque Value: 15 N-m (11 lb.ft.)
1. Disconnect negative battery cable
2. Disconnect IAT sensor harness connector
3. Remove air intake duct
4. Remove serpentine drive belt
5. Drain engine cooling system
6. Disconnect three water pump hoses
Water Pump Removal:
7. Remove water pump assembly
Torsional Dampener Removal:
8. Remove crankshaft torsional damper
9. Remove belt tensioner
10. Remove spark plug secondary cables from distributor. Twist boot 1/2 turn and pull only on the boot to remove wire from distributor.
11. Disconnect four terminal PCM connector from distributor.
Distributor Assembly Mounting:
12. Remove three distributor mounting bolts. Pull distributor forward until drive shaft disengages from engine. Mark the top surface of the shaft to denote location during reassembly.
Install or Connect:
1. Install distributor shaft into distributor, if removed. Turn shaft until the mark is on top.
2. Place distributor and shaft assembly into engine.
3. Tighten three distributor bolts
Torque Value: 11 N-m (8 lb.ft.)
4. Connect four terminal PCM connector to distributor
5. Connect spark plug cables to distributor
6. Install belt tensioner
7. Install crankshaft torsional damper to engine
8. Connect coolant temperature sensor connector
9. Install water pump
10. Connect three water hoses to water pump
11. Fill engine with coolant
Serpentine Belt Routing:
12. Install serpentine drive belt
13. Install air intake duct
14. Connect intake air temperature (IAT) sensor connector
15. Connect and tighten negative battery cable
Torque Value: 15 N-m (11 lb.ft.)
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.