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Home >> Geo >> 1997 >> Metro Base >> Repair and Diagnosis >> Engine Performance >> Engine Controls - Adjustments 1.0 & 1.3L >> Engine Mechanical

Engine Mechanical

NOTE: Geo uses two types of diagnostic connectors. Duty check Data Link Connector (duty check DLC) and OBD-II Data Link Connector (DLC). In this article, duty check DLC refers to 6-pin diagnostic connector. Connector is located next to left strut tower in engine compartment. DLC refers to 16-pin diagnostic connector located under instrument panel used for scan tool hook-up.

Before performing any on-vehicle adjustments to fuel or ignition systems, ensure engine mechanical condition is okay.

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