this vehicle failed on ASM test both 15&25 MPH by HC193&187ppm, CO 5.43&5.28, NO 299&270 so I focused on A/F control system. repaired many [...] and [...],and check CAT.-HC reduction test-it's ok. also O2 sensor little laze but [...] strange thing happen ...

FIX posted 6/30/1999

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