1998 Mazda MPV LX Adjustments Engine Performance

1998 Mazda MPV LX Adjustments Engine Performance

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MILLENIA, MPV, PROTEGE NOTE: 1. Connect New Generation Star (NGS) scan tool to Data Link Connector (DLC) 2 located under left side of instrument panel, right of steering column. See Fig. 9 . Connect a jumper wire between terminals TEN and GND at DLC 1 in engine compartment. See Fig. 10 . 2. Ensure idle speed is correct. See IDLE SPEED & MIXTURE . On all models except Millenia 2.3L, connect timing light to high-tension lead No. 1. On Millenia 2.3L, connect Inductive Timing Light (49- T018-002) lead to ignition timing checking harness (Black/White wire) located next to engine compartment fuse/relay box. See Fig. 8 . Start engine and allow it to idle. Check timing.

See IGNITION TIMING SPECIFICATIONS table. See Fig. 11 . On Millenia 2.3L, ignition timing is not adjustable. NOTE: Standard inductive timing light may not work on ignition timing checking harness. Recommend using manufacturers Inductive Timing Light (49- T018-002) or equivalent 3. On Millenia 2.3L, if ignition timing is not within specification, check for diagnostic trouble codes. See TESTS W/CODES article in the ENGINE PERFORMANCE section. Repair as necessary. If no codes are present, check Camshaft Position (CMP) sensor and Crankshaft Position (CKP) sensor. See appropriate I – SYSTEM & COMPONENT TESTS article in the ENGINE PERFORMANCE section. Replace as necessary. 4. On all models except Millenia 2.3L, if ignition timing is not within specification, loosen distributor lock bolt. Rotate distributor until timing marks align. Tighten lock bolt. Recheck timing. 626 1. Connect New Generation Star (NGS) scan tool to data link connector 2 located under left side of instrument panel, right of steering column. See Fig. 9 . Ensure idle speed is correct. See procedures in IDLE SPEED & MIXTURE . 2. Connect timing light to engine and check timing. See Fig. 11 . See IGNITION TIMING SPECIFICATIONS table. If ignition timing is not within specification, check CMP sensor, CKP sensor, TP sensor, ECT sensor, neutral switch, clutch switch and transmission range switch. See I – SYSTEM & COMPONENT TESTS article in the ENGINE PERFORMANCE section. If all sensors and switches are okay, replace PCM.