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 MANUALSPONTIAC1989GRAND PRIX V6-191 3.1LREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSCOMPUTERS AND CONTROL SYSTEMSSYSTEM SPECIFICATIONS
1989 Pontiac Grand Prix V6-191 3.1L
System Specifications
1989 Pontiac Grand Prix V6-191 3.1LSECTION System Specifications
TORQUE VALUES:
Coolant Cavity Cover 3.0 Nm (27.0 lb.in)
Fuel Line Nuts 23.0 Nm (17.0 lb.ft)
Fuel Rail Attaching Bolts 10.0 Nm (88.0 lb.in)
Fuel Rail Inlet Fitting 48.0 Nm (35.0 lb.ft)
Fuel Rail Mounting Bracket 3.2 Nm (28.0 lb.in)
Fuel Rail Outlet Fitting 40.0 Nm (30.0 lb.ft)
Fuel Pressure Connection 10.0 Nm (88.0 lb.in)
Fuel Pressure Regulator Bracket 3.2 Nm (28.0 lb.in)
Idle Air Control Valve 3.4 Nm (30.0 lb.in)
Idle Air/Vacuum Signal Housing 3.4 Nm (30.0 lb.in)
Intake Air Plenum Bolts 21.0 Nm (16.0 lb.ft)
Throttle Body Attaching Bolts 25.0 Nm (18.0 lb.ft)
Throttle Position Sensor 2.0 Nm (18.0 lb.in)
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.