Tune-Up Specifications

CAUTION: The following specifications are published from the latest information available. This data should only be used in the absence of a decal affixed in the engine compartment.

Engine 3.0L
Spark Plug Gap, Inch 0.041
Ignition Timing

Fig. D:

Firing Order [02]
°BTDC [05]
Manual Transmission 12
Automatic Transmission 12

Fig. C:

Ignition Timing Mark shown
Idle Speed [03]
Manual Transmission 700
Automatic Transmission 700N
Fuel Pump Pressure [04] 48 psi
Valve Clearance, Inch [01]


BTDC: Before Top Dead Center
N: Neutral
[01] Automatic lash adjusters used] no adjustment necessary.
[02] Before removing wires from distributor cap or coil, determine location of No. 1 wire, as position may have been altered from that shown at end of this chart.
[03] Curb idle speed shown] fast idle speed is controlled by Power Train Control Module (PCM).
[04] Loosen gas cap to release pressure in tank. Ground one terminal of any injector with a jumper wire. Connect remaining terminal of injector to battery positive post using a jumper for no longer than ten seconds to release fuel.
[05] Check ignition timing w/coolant sensor wire disconnected.