1993 Pontiac Firebird Formula, AutomaticFACTORY OEM SERVICE PROCEDURE

Model Coverage & Identification

1993 MODEL COVERAGE

Model Body (1) Engine Engine ID Fuel System Ignition System
Bonneville H 3.8L (L27) L (2) PFI C(3)I Hall Effect
3.8L (L67) 1 (2)(3) PFI C(3)I Hall Effect
Firebird F 3.4L (L32) S (2) PFI HEI Magnetic
5.7L (LT1) P PFI Opti-Spark
Grand Am N 2.3L (LG0) A PFI IDI Magnetic
2.3L (LD2) D PFI IDI Magnetic
3.3L (LG7) N PFI C(3)I Hall Effect
Grand Prix W 3.1L (LH0) T (4) PFI DIS Magnetic
3.4L (LQ1) X PFI DIS Magnetic
Sunbird J 2.0L (LE4) H PFI DIS Magnetic
3.1L (LH0) T PFI DIS Magnetic
(1) Engine code is stamped on engine block. See ENGINE CODE LOCATION  table.
(2) Sequential fuel injection.
(3) Supercharged engine.
(4) California models are sequential fuel injection.
Factory Service Tools

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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.

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