1995 Geo Prizm Base, AutomaticFACTORY OEM SERVICE PROCEDURE

Ignition Timing

IGNITION TIMING SPECIFICATIONS (1)

Application Man. Trans. Auto. Trans.
Prizm (2) 10 @ 650-750 (2) 10 @ 650-750
(1) If specification differs from emission label, use specification listed on emission label.
(2) With jumper wire installed between Black 23-pin data link connector terminal No. 3/E1 (Brown wire) and terminal No. 8/TE1 (Blue/White wire), located on left strut tower. With jumper wire removed, timing will vary between 5-15 degrees BTDC.
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:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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