Mitsubishi Montero (1998+). Manual - part 84

         IGNITION TIMING

IGNITION TIMING SPECIFICATIONS (Degrees BTDC @ RPM) TABLE





























































Application               (1) Basic       (2) (3) (4) Actual

1.5L  ................  2-8 @ 650-750  .......  10 @ 600-800

1.8L  ................  2-8 @ 600-800  ........  5 @ 600-800

2.0L

  Non-Turbo  ..............  (5)  .....................  (5)

  Turbo  .............  2-8 @ 650-850  ........  8 @ 650-850

2.4L  ................  2-8 @ 650-850  .......  10 @ 650-850

3.0L  ................  2-8 @ 600-800  .......  15 @ 600-800

3.5L  ................  2-8 @ 600-800  .......  15 @ 600-800

(1) - With ignition timing adjustment connector grounded or

      vacuum hose (farthest from distributor) disconnected.

(2) - With ignition timing adjustment connector ungrounded

      or vacuum hose (farthest from distributor) connected.

(3) - If vehicle altitude is more than 2300 feet above sea

      level, actualtiming may be advanced (5 degrees).

(4) - Actual ignition timing is approximate and may

      fluctuate plus or minus 7 degrees.

(5) - Ignition timing is NOT adjustable.





























































Fig. 2:  Locating Data Link Connector (Typical)

Courtesy of Mitsubishi Motor Sales of America

         3000GT (DOHC)

         1) Ignition timing is controlled by Powertrain Control Module

(PCM) and is not adjustable. Manufacturer provides procedure for

checking timing.

         2) Start engine and warm engine until engine temperature

coolant is 176-203 F (80-95 C). Turn engine off. Insert a paper clip

in engine speed detection connector. See Fig. 3. Connect a tachometer

to paper clip.

Fig. 3:  Locating Engine Speed Detection Connector (3000GT - DOHC)

Courtesy of Mitsubishi Motor Sales of America

         3) Install a timing light. Start engine and allow it to idle.

Using tachometer, read curb idle (RPM). Multiply RPM reading by 3 to

obtain actual curb idle speed. Ensure curb idle speed is 600-700 RPM.

Turn engine off. Curb idle speed is automatically controlled by Idle

Air Control (IAC) system. If curb idle speed is not as specified, see

DTC P0505 in G - TESTS W/CODES article.

         4) Disconnect waterproof female connector from Brown ignition

timing check connector. See Fig. 4. Using a jumper wire, ground

ignition timing check terminal to read basic ignition timing. Using

timing light, read basic ignition timing value. See

IGNITION TIMING SPECIFICATIONS table. If basic ignition timing is

within specification, go to next step. If basic ignition timing is not

within specification, see DTC P0335 in G - TESTS W/CODES article.

         5) Remove jumper wire to read actual ignition timing. Using

timing light, read actual ignition timing value. If actual ignition

timing is not within specification, see DTC P0335 in G - TESTS W/CODES

article.

Fig. 4:  Locating Ignition Timing Check Connector

Courtesy of Mitsubishi Motor Sales of America

         3000GT (SOHC)

         1) Ignition timing is controlled by Powertrain Control Module

(PCM) and is not adjustable. Manufacturer provides procedure for

checking timing.

         2) Start engine and warm engine until engine temperature

coolant is 176-203 F (80-95 C). Turn engine off. Insert a paper clip

in noise filter connector. See Fig. 5. Connect a tachometer to paper

clip.

Fig. 5:  Locating Noise Filter Connector

Courtesy of Mitsubishi Motor Sales of America

         3) Install a timing light. Start engine and allow it to idle.

Using tachometer, read curb idle speed (RPM). Ensure curb idle speed

is 600-700 RPM. Turn engine off. Curb idle speed is automatically

controlled by Idle Air Control (IAC) system. If curb idle speed is not

as specified, see DTC P0505 in G - TESTS W/CODES article.

         4) Disconnect waterproof female connector from Brown ignition

timing check connector. See Fig. 4. Using a jumper wire, ground

ignition timing check terminal to read basic ignition timing. Using

timing light, read basic ignition timing value. See

IGNITION TIMING SPECIFICATIONS table. If basic ignition timing is

within specification, go to next step. If basic ignition timing is not

within specification, see DTC P0335 in G - TESTS W/CODES article.

         5) Remove jumper wire to read actual ignition timing. Using

timing light, read actual ignition timing value. If actual ignition

timing is not within specification, see DTC P0335 in G - TESTS W/CODES

article.

         All Other Models

         1) Ignition timing is controlled by Powertrain Control Module

(PCM) and is not adjustable. Manufacturer provides procedure for

checking timing. On models with distributor, DO NOT attempt to adjust

ignition timing by rotating distributor.

         2) Connect scan tool to Data Link Connector (DLC). DLC is

located below dash, near steering column. See  Fig. 2. Install a timing

light. Start engine and allow it to idle.

         3) Using scan tool, read curb idle speed (RPM). Ensure curb

idle speed is about 750 RPM. Turn engine off. Curb idle speed is

automatically controlled by Idle Air Control (IAC) system. If curb

idle speed is not as specified, see DTC P0505 in G - TESTS W/CODES

article.

CAUTION: MFI system actuator test must be cancelled or test will

         continue to run for 27 minutes. Driving vehicle under this

         condition may damage engine.

         4) Using scan tool, select MFI SYSTEM ACTUATOR TEST, then

select item 17 (BASIC IGNITION TIMING). Read basic ignition timing

value. See IGNITION TIMING SPECIFICATIONS table. If basic ignition

timing is within specification, go to next step. If basic ignition

timing is not within specification, cancel MFI system actuator test.

See DTCS P0100 (except Mirage 1.5L), P0105, P0115 and P0335 in G -

TESTS W/CODES article.

         5) Read actual ignition timing value. If actual ignition

timing is not within specification, cancel MFI system actuator test.

See DTCS P0100 (except Mirage 1.5L), P0105, P0115 and P0335 in G -

TESTS W/CODES article.

         IDLE SPEED & MIXTURE

         * PLEASE READ THIS FIRST *

NOTE:    Perform adjustments with engine at normal operating

         temperature, cooling fan and accessories off, transmission

         in Park or Neutral, and front wheels in straight-ahead

         position.

         BASIC IDLE SPEED

NOTE:    Basic idle speed adjustment information on Eclipse 2.0L

         non-turbo engine is not available from manufacturer at time

         of publication.

         3000GT

         1) Ensure vehicle is at normal operating temperature with all