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 MANUALSCHEVROLET1990LUMINA APV V6-191 3.1LREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSCOMPUTERS AND CONTROL SYSTEMSSYSTEM SPECIFICATIONS
1990 Chevrolet Lumina APV V6-191 3.1L
System Specifications
1990 Chevrolet Lumina APV V6-191 3.1LSECTION System Specifications
Throttle body to Intake manifold 16 Nm (12.0 lb-ft)
Fuel Meter Cover Assembly 3.0 Nm (28.0 lb-in)
Fuel Meter Body Assembly 4.0 Nm (30.0 lb-in)
Fuel Inlet Nut 40.0 Nm (30.0 lb-ft)
Fuel Outlet Nut 29.0 Nm (21.0 lb-ft)
Fuel Lines 23.0 Nm (17.0 lb-ft)
Throttle Position Sensor (TPS) Attaching Screws 2.0 Nm (18.0 lb-in)
Idle Air Control Valve (IAC) 18.0 Nm (13.0 lb-ft)
Fuel Filter Union Nuts 26.0 Nm (20.0 lb-ft)
Fuel Tank Retaining Strap Bolts 24.0 Nm (18.0 lb.ft.)
Heat Shield Attaching Screws 25.0 Nm (18 lb.ft.)
Converter Hanger Attaching Nuts 27.0 Nm (20.0 lb.ft.)
Muffler Hanger Attaching Bolts 25.0 Nm (18.0 lb.ft.)
Tail Pipe Hanger Attaching Bolt 27.0 Nm (20.0 lb.ft.)
Accelerator/Brake Pedal Bracket Attaching Nut 21.0 Nm (15.0 lb.ft.)
Brake Rod Attaching Nut 43.0 Nm (32 lb.ft.)
Fuel Meter Cover Assembly 3.0 Nm (28.0 lb-in)
Fuel Meter Body Assembly 4.0 Nm (30.0 lb-in)
Fuel Inlet Nut 40.0 Nm (30.0 lb-ft)
Fuel Outlet Nut 29.0 Nm (21.0 lb-ft)
Fuel Lines 23.0 Nm (17.0 lb-ft)
Throttle Position Sensor (TPS) Attaching Screws 2.0 Nm (18.0 lb-in)
Idle Air Control Valve (IAC) 18.0 Nm (13.0 lb-ft)
Fuel Filter Union Nuts 26.0 Nm (20.0 lb-ft)
Fuel Tank Retaining Strap Bolts 24.0 Nm (18.0 lb.ft.)
Heat Shield Attaching Screws 25.0 Nm (18 lb.ft.)
Converter Hanger Attaching Nuts 27.0 Nm (20.0 lb.ft.)
Muffler Hanger Attaching Bolts 25.0 Nm (18.0 lb.ft.)
Tail Pipe Hanger Attaching Bolt 27.0 Nm (20.0 lb.ft.)
Accelerator/Brake Pedal Bracket Attaching Nut 21.0 Nm (15.0 lb.ft.)
Brake Rod Attaching Nut 43.0 Nm (32 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.