Tune-Up Specifications

Engine (VIN) [04] 2.4L/4-148 (B)
Spark Plug Gap 0.05

Ignition Timing, °BTDC
Firing Order [03] [01]
Man. Trans. [14]
Auto. Trans. [14]
Mark Location [16]

Curb Idle Speed [02]
Man. Trans. [17]
Auto. Trans. [17]

Fast Idle Speed
Man. Trans. [06]
Auto. Trans. [06]

Fuel Pump Pressure, psi. 49 [18]
Valve Lash [19]


BTDC -- Before Top Dead Center.

[01] -- Equipped with direct ignition system. Cylinder numbering, from front of engine to rear: 1, 2, 3, 4 firing order, 1-3-4-2.

[02] -- Idle speed is adjusted with transmission in Neutral (N). When checking idle speed, set parking brake & block drive wheels.

[03] -- Before removing wires from distributor cap, determine location of No. 1 wire in cap, as distributor position may have been altered from that shown at the end of this chart.

[04] -- The eighth digit of the VIN denotes engine code.

[06] -- Controlled by an idle speed control motor.

[14] -- Ignition timing cannot be changed or reset.

[16] -- Equipped with crankshaft position sensor.

[17] -- Vehicle with less than 1000 miles, 500-875 RPM vehicle with more than 550 miles, 875 RPM.

[18] -- Disconnect battery ground cable, then remove fuel tank filler cap. Remove cap from fuel pressure test port on fuel rail. Position open end of a suitable fuel pressure bleed hose into a suitable gas container. Connect other end of fuel pressure bleed hose to fuel pressure test port and allow fuel pressure to bleed off. Disconnect fuel pressure bleed hose from test port. Connect fuel pressure gauge to pressure test port. Connect battery ground cable. Connect DRB or other suitable scan tool, then place ignition switch in the On position and activate ASD fuel pressure test.

[19] -- Equipped with hydraulic lash adjusters.