# Engine idle speed — adjustment condition (NA8 MT)

Canonical URL: https://miatatorque.com/spec/engine-idle-speed-na8-mt/

Applicability: NA 1994–1997 (BP, 5MT) — Other years inferred from 1994 factory evidence.

Confidence: fsm

800–900 (850 ± 50) rpm, Neutral

Always confirm against your factory manual. Match every restriction and follow all stages and procedure notes. Disputed claims must not be automatically resolved. The complete record below preserves every printed unit, source claim and procedure.

```json
{
  "id": "engine-idle-speed-na8-mt",
  "name": "Engine idle speed — adjustment condition (NA8 MT)",
  "aliases": [],
  "applies_to": [
    {
      "gen": "NA",
      "years": [
        1994,
        1997
      ],
      "engines": [
        "BP"
      ],
      "trans": [
        "5MT"
      ],
      "note": "Other years inferred from 1994 factory evidence."
    }
  ],
  "kind": "non-torque",
  "value_text": "800–900 (850 ± 50) rpm, Neutral",
  "procedure": {
    "notes": "Warm engine to normal operating temperature; turn all accessories off and wait for coolant fan to stop. Connect timing light/tachometer as specified by the factory procedure. Do not ground the blue one-pin power connector. Use factory system selector in SELF TEST or connect TEN to GND at data link connector; disconnect SST/jumper afterward."
  },
  "confidence": "fsm",
  "sources": [
    {
      "source": "fsm-1994",
      "page": "B–9 (PDF p.46)",
      "as_printed": "Idle speed\n(Neutral): 800—900 (850 ± 50) rpm [MT]",
      "verified_years": [
        1994,
        1994
      ],
      "document": {
        "id": "fsm-1994",
        "tier": 1,
        "title": "1994 Mazda MX-5 Miata Workshop Manual",
        "covers": [
          {
            "gen": "NA",
            "years": [
              1994,
              1997
            ],
            "engines": [
              "BP"
            ]
          }
        ],
        "note": "Mazda's base manual for 1994–97; later model years got supplements, which we haven't checked yet."
      }
    },
    {
      "source": "fsm-1994",
      "page": "F–77 (PDF p.226)",
      "as_printed": "Idle speed\n(Neutral): 800—900 (850 ± 50) rpm [MT]",
      "verified_years": [
        1994,
        1994
      ],
      "document": {
        "id": "fsm-1994",
        "tier": 1,
        "title": "1994 Mazda MX-5 Miata Workshop Manual",
        "covers": [
          {
            "gen": "NA",
            "years": [
              1994,
              1997
            ],
            "engines": [
              "BP"
            ]
          }
        ],
        "note": "Mazda's base manual for 1994–97; later model years got supplements, which we haven't checked yet."
      }
    }
  ],
  "jobs": [],
  "system": "fuel-intake",
  "component": "inventory-pass-2026-10",
  "componentName": "Service measurements and fasteners",
  "sequence_diagrams": [],
  "url": "https://miatatorque.com/spec/engine-idle-speed-na8-mt/"
}
```