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 SPECIFICATIONSENGINEINTAKE MANIFOLDUPPER INTAKE MANIFOLD TORQUE SEQUENCE
1989 Pontiac Grand Prix V6-191 3.1L
Upper Intake Manifold Torque Sequence
1989 Pontiac Grand Prix V6-191 3.1LSECTION Upper Intake Manifold Torque Sequence
Alldata Editor NOTE: Other than the two torque passes, the OE Manufacturer did NOT address or supply a bolt tightening sequence for the upper Intake Manifold for this model year, or other model years where this 2 piece manifold setup is used.
A "Play It Safe" final tightening sequence would be to tighten from the center most bolts to the outer most bolts.
A "Play It Safe" final tightening sequence would be to tighten from the center most bolts to the outer most bolts.
RENDER: 1.0x
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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.