Idle Speed
NOTE:
Idle speed is controlled by Powertrain Control Module (PCM) and is not adjustable. Idle speed specifications are for reference purposes only. If engine idle concerns are present, check for contaminated fuel, vacuum leaks and incorrect ignition timing. Ensure throttle bore, EGR system and PCV system are clean. If these are okay, check PCM for Diagnostic Trouble Codes (DTCs). See appropriate article:
- For Crown Victoria (Gasoline) and Grand Marquis, see TESTS W/CODES - GASOLINE.
- For Crown Victoria (CNG), see TESTS W/CODES - CNG.
- For Continental, see TESTS W/CODES .
- For Town Car, see TESTS W/CODES .
If no DTCs exist, go to appropriate article:
- For Crown Victoria (Gasoline), Grand Marquis and Town Car, see TESTS W/O CODES - GASOLINE.
- For Crown Victoria (CNG), see TESTS W/O CODES - CNG.
- For Continental, see TESTS W/O CODES
IDLE RPM SPECIFICATION (1)
| Application | RPM | ||
|---|---|---|---|
| 4.6L | 775-825 | ||
|
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