Idle Speed & Ignition Timing
WARNING: This page is about a different car, the 1998 Porsche 911 and 1997 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.
Ensure idle speed and ignition timing are set to specification. Idle speed and ignition timing are controlled by Digital Motor Electronics (DME) engine management system and are not adjustable. Values given, for verification purpose only, are in the following tables:
IGNITION TIMING
| Application | Degrees @ RPM |
|---|---|
| Automatic Transmission | TDC +/- 3 @ 710-790 |
| Manual Transmission | TDC +/- 3 @ 760-840 |
IDLE SPEED
| Application | (1) Idle RPM | ||
|---|---|---|---|
| Automatic Transmission | 710-790 | ||
| Manual Transmission | 760-840 | ||
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