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Engine Controls - Specifications Isuzu Impulse II

Specifications 1 illustration ~181 words

INTRODUCTION

Use this article to quickly find specifications related to servicing and on-vehicle adjustments. This is a quick-reference article to use when you are familiar with an adjustment procedure and only need a specification.

SERVICE INTERVALS & SPECIFICATIONS

ComponentInterval (Miles)
Air Filter30,000
Automatic Transaxle Fluid30,000
Coolant30,000
Front & Rear Axle Oil15,000
Manual Transaxle Oil
Impulse30,000
Manual Transmission Fluid
Impulse & Stylus30,000
Oil & Filter
All models except Impulse (Turbo)7500
Impulse (Turbo)5000
Spark Plugs30,000
Timing Belt60,000
Transfer Case Oil15,000

REPLACEMENT INTERVALS

ApplicationInterval (Miles)
Valve Clearance
Impulse60,000
Stylus
SOHC15,000
DOHC60,000

ADJUSTMENT INTERVALS

Application(1) Belt Tension lbs. (kg)
A/C & P/S Belts
New Belt130-160 (59-73)
Used Belt120-150 (54-68)
Alternator Belt70-110 (32-50)
(1) Belt tension checked with belt tension gauge.
(1)Belt tension checked with belt tension gauge.

BELT ADJUSTMENT

CAPACITIES

ApplicationGroup
Impulse & Stylus25R

BATTERY SPECIFICATIONS

ApplicationQts. (L)
Crankcase (Includes Filter)4.6 (4.4)
Cooling System (Includes Heater)
A/T (Non-Turbo)7.8 (7.4)
M/T (Non-Turbo)7.3 (6.9)
M/T (Turbo)7.9 (7.5)
Manual Transaxle (1)2.0 (1.9)
Automatic Transaxle (Dexron-II) Dry Refill7.0 (6.6)
Differential (2) Rear Axle.69 (.65)
Transfer Case (3)1.4 (1.3)
(1) Use 5W-30 SF engine oil with ambient temperatures less than 90°F (32°C) or SAE 20W-50 with temperatures greater than 90°F (32°C). (2) On standard differentials, use SAE 80W-90/API GL-5 gear oil. On limited slip models, use SAE 80W-90/API GL-5 gear oil rated for limited slip axles. (3) Use 80W-90/API GL-5 gear oil.
(1)Use 5W-30 SF engine oil with ambient temperatures less than 90°F (32°C) or SAE 20W-50 with temperatures greater than 90°F (32°C).
(2)On standard differentials, use SAE 80W-90/API GL-5 gear oil. On limited slip models, use SAE 80W-90/API GL-5 gear oil rated for limited slip axles.
(3)Use 80W-90/API GL-5 gear oil.

FLUID CAPACITIES - IMPULSE

ApplicationQts. (L)
Crankcase (Includes Filter)
SOHC3.6 (3.4)
DOHC4.6 (4.4)
Cooling System (Includes Heater)
A/T SOHC7.7 (7.3)
M/T SOHC7.2 (6.8)
M/T DOHC7.3 (6.9)
Manual Transaxle (1)2.0 (1.9)
Automatic Transaxle (Dexron-II) Dry Refill7.0 (6.6)
(1) Use 5W-30 SF engine oil with ambient temperatures less than 90°F (32°C) or SAE 20W-50 with temperatures greater than 90°F (32°C).
(1)Use 5W-30 SF engine oil with ambient temperatures less than 90°F (32°C) or SAE 20W-50 with temperatures greater than 90°F (32°C).

FLUID CAPACITIES - STYLUS

IDLE SPEED

ApplicationIdle RPM
Impulse (1)
Non-Turbo850
Turbo900
Stylus
SOHC (1)
A/T940
M/T850
DOHC850
(1) Transaxle in Park or Neutral.
(1)Transaxle in Park or Neutral.

IDLE SPEED SPECIFICATIONS

THROTTLE POSITION SENSOR (TPS)

Note. Refer to appropriate ADJUSTMENTS article in the ENGINE PERFORMANCE Section for throttle position sensor/switch adjustment procedures.

ENGINE COMPRESSION

ApplicationSpecification
Impulse
Non-Turbo9.8:1
Turbo8.5:1
Stylus
SOHC9.1:1
DOHC9.8:1

COMPRESSION RATIO

ApplicationSpecification
Impulse 1.6L
Non-Turbo(1) 185 psi (13.0 kg/cm 2 )
Turbo170 psi (12.0 kg/cm 2 )
Stylus
SOHC185 psi (13.0 kg/cm 2 )
DOHC178 psi (12.5 kg/cm 2 )
(1) Minimum pressure is 128 psi (9.0 kg/cm 2 ).
(1)Minimum pressure is 128 psi (9.0 kg/cm 2 ).

COMPRESSION PRESSURE

VALVE CLEARANCE

Application(1) In. (mm)
Cold
Intake.006 (.15)
Exhaust.010 (.25)
Hot
Intake.008 (.20)
Exhaust.012 (.30)
(1) Adjust valve clearance with engine cold.
(1)Adjust valve clearance with engine cold.

VALVE CLEARANCE SPECIFICATIONS

Note. Right and left sides refer to engine as viewed from flywheel.

All models

Right Side - All intake.

Left Side - All exhaust.

DISTRIBUTOR

ApplicationIn. (mm)
Impulse & Stylus.008-.016 (.20-.40)

DISTRIBUTOR PICK-UP COIL AIR GAP

ApplicationOhms
Impulse (1) & Stylus500-1500
(1) Non-turbo only.
(1)Non-turbo only.

DISTRIBUTOR PICK-UP COIL RESISTANCE

IGNITION COIL

Application (1)PrimarySecondary
Impulse (2) & Stylus1.2-1.510,200-13,800
(1) On all models, insulation resistance should not be more than 10m (million) ohms. (2) Non-turbo only.
(1)On all models, insulation resistance should not be more than 10m (million) ohms.
(2)Non-turbo only.

IGNITION COIL RESISTANCE - Ohms @ 68°F (20°C)

HIGH TENSION WIRE RESISTANCE

ApplicationResistance
Non-Turbo
Coil Wire2740-6380
Spark Plug Wire (1)
No. 15800-13,300
No. 25200-12,000
No. 34300-9900
No. 44200-9600
Turbo
Coil Wire(2)
Spark Plug Wire
No. 17300-9700
No. 25700-7600
No. 34700-6200
No. 43900-5200
(1) Also applies to Stylus model with SOHC engine. (2) Information is not available from mfg.
(1)Also applies to Stylus model with SOHC engine.
(2)Information is not available from mfg.

HIGH TENSION WIRE RESISTANCE

SPARK PLUGS

ApplicationNGK/AC
Impulse
Non-TurboBKR6E-11
TurboBKR6E
Stylus
SOHCBPR6ES-11/R42XLS
DOHCBKR6E-11

SPARK PLUG TYPE

ApplicationGap In. (mm)Torque Ft. Lbs. (N.m)
Impulse
Non-Turbo.040 (1.02)14 (19)
Turbo.030 (.75)14 (19)
Stylus.040 (1.02)14 (19)

SPARK PLUG SPECIFICATIONS

Firing Order & Distributor Rotation). Scheme 1

Scheme 1: Firing Order & Distributor Rotation)
Scheme 1: Firing Order & Distributor Rotation)
ApplicationBase Timing
Impulse & Stylus(1) 9-11
(1) With jumper wire installed in ALDL connector, located behind right side of instrument panel. Increase engine speed to 1500-2000 RPM to read timing specification (if necessary).
(1)With jumper wire installed in ALDL connector, located behind right side of instrument panel. Increase engine speed to 1500-2000 RPM to read timing specification (if necessary).

IGNITION TIMING - (Degrees BTDC @ RPM)

FUEL PUMP (FUEL INJECTED)

ApplicationUnregulated Pressure psi (kg/cm 2 )Regulated Pressure psi (kg/cm 2 )
Impulse
Non-Turbo(1) 35-38 (2.4-2.7)(2) 25-30 (1.7-2.1)
Turbo(1) 39-47(2) Slight Drop
Stylus35-38 (2.4-2.7)25-30 (1.7-2.1)
(1) With ignition on and vacuum hose disconnected from pressure regulator. (2) With engine at idle or with 12-14 in. Hg vacuum manually applied to pressure regulator.
(1)With ignition on and vacuum hose disconnected from pressure regulator.
(2)With engine at idle or with 12-14 in. Hg vacuum manually applied to pressure regulator.

FUEL PUMP PERFORMANCE

INJECTOR RESISTANCE

ApplicationOhms
Impulse
Non-TurboGreater Than 1.2
Turbo1.2-2.2
StylusGreater Than 2

INJECTOR RESISTANCE