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.
1992 Isuzu Stylus RSFACTORY OEM SERVICE PROCEDURE
Electronic Spark Timing (EST) (Non-Turbo)
- To check system operation, check timing at 1500 RPM with ALDL ungrounded. Locate ALDL connector. ALDL is located behind right side of instrument panel. See Fig 1 .
- Install jumper wire between terminals No. 1 and 3 of ALDL connector. See Fig 1 . Note timing at 1500 RPM. If timing changes, system is operating correctly.
NOTE:
If a problem develops with EST, ECM will set Code 42. For additional testing procedures, see appropriate TESTS W/CODES
article in the ENGINE PERFORMANCE Section.
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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