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Engine Controls - Specifications - 3.4L: Other Toyota Tacoma I

Specifications ~152 words

ENGINE COMPRESSION

Check engine compression with engine at normal operating temperature at specified cranking speed, all spark plugs removed and throttle wide open.

ApplicationSpecification
Compression Ratio9.6:1
Compression Pressure174 psi (12.2 kg/cm 2 )
Minimum Compression Pressure145 psi (10.1 kg/cm 2 )
Maximum Variation Between Cylinders15 psi (1.1 kg/cm 2 )

COMPRESSION SPECIFICATIONS

VALVE CLEARANCE

Application(1) In. (mm)
Intake.006-.009 (.15-.23)
Exhaust.011-.014 (.29-.35)
(1) Adjust valve clearance with engine cold.
(1)Adjust valve clearance with engine cold.

VALVE CLEARANCE SPECIFICATIONS

IGNITION COIL

ApplicationPrimarySecondary
Cold (1).67-1.059300-16,000
Hot (2).85-1.2311,700-18,800
(1) Cold is with temperature of 14-122°F (-10-50°C). (2) Hot is with temperature of 122-212°F (50-100°C).
(1)Cold is with temperature of 14-122°F (-10-50°C).
(2)Hot is with temperature of 122-212°F (50-100°C).

IGNITION COIL RESISTANCE - Ohms

DISTRIBUTOR SENSORS

ApplicationIn. (mm)
3.4L(1)
(1) Distributorless Ignition System (DIS) is used.
(1)Distributorless Ignition System (DIS) is used.

DISTRIBUTOR PICK-UP COIL AIR GAP

ApplicationOhms
Cold (1)835-1400
Hot (2)1060-1645
(1) Cold is with temperature of 14-122°F (-10-50°C). (2) Hot is with temperature of 122-212°F (50-100°C).
(1)Cold is with temperature of 14-122°F (-10-50°C).
(2)Hot is with temperature of 122-212°F (50-100°C).

CAMSHAFT POSITION SENSOR RESISTANCE

ApplicationOhms
Cold (1)1630-2740
Hot (2)2065-3225
(1) Cold is with temperature of 14-122°F (-10-50°C). (2) Hot is with temperature of 122-212°F (50-100°C).
(1)Cold is with temperature of 14-122°F (-10-50°C).
(2)Hot is with temperature of 122-212°F (50-100°C).

CRANKSHAFT POSITION SENSOR RESISTANCE

HIGH TENSION WIRE RESISTANCE

ApplicationMaximum Ohms
3.4L25,000 Per Wire

HIGH TENSION WIRE RESISTANCE

SPARK PLUGS

ApplicationNGK No.Nippondenso No.
3.4LBKR5EKB-11K16TR11

SPARK PLUG TYPE

Application TypeGap In. (mm)Torque Ft. Lbs. (N.m)
3.4L.043 (1.10)13 (18)

SPARK PLUG SPECIFICATIONS

FIRING ORDER

ApplicationFiring Order
3.4L (1)(2) (3)
(1) Cylinder No. 1 is front cylinder on right side of engine when viewed from flywheel end of engine. Cylinder No. 2 is front cylinder on left side of engine when viewed from flywheel end of engine. Cylinders No. 1, 3 and 5 are on right side. Cylinders No. 2, 4 and 6 are on left side. (2) Firing order is not available from manufacturer at time of publication. (3) System uses a Distributorless Ignition System (DIS) with 3 ignition coils. Two cylinders fire simultaneously using same the ignition coil.
(1)Cylinder No. 1 is front cylinder on right side of engine when viewed from flywheel end of engine. Cylinder No. 2 is front cylinder on left side of engine when viewed from flywheel end of engine. Cylinders No. 1, 3 and 5 are on right side. Cylinders No. 2, 4 and 6 are on left side.
(2)Firing order is not available from manufacturer at time of publication.
(3)System uses a Distributorless Ignition System (DIS) with 3 ignition coils. Two cylinders fire simultaneously using same the ignition coil.

FIRING ORDER

IGNITION TIMING

Application Type(2) Base Timing(3) ECM Controlled Timing
3.4L8-1213-22
(1) Check with engine at normal operating temperature, transmission/transaxle in Neutral, parking brake applied, electric cooling fan off (if equipped) and A/C and all accessories off. (2) With Jumper Wire (SST 09843-18020) installed between terminals TE1 and E1 on data link connector No. 1. (3) With jumper wire removed from data link connector No. 1.
(1)Check with engine at normal operating temperature, transmission/transaxle in Neutral, parking brake applied, electric cooling fan off (if equipped) and A/C and all accessories off.
(2)With Jumper Wire (SST 09843-18020) installed between terminals TE1 and E1 on data link connector No. 1.
(3)With jumper wire removed from data link connector No. 1.

IGNITION TIMING (Degrees BTDC @ Idle) (1)

FUEL PUMP

Note. Fuel pump performance measures fuel pressure, not regulated fuel pressure.

ApplicationPressure - psi (kg/cm 2 )
3.4L(1) 38-44 (2.7-3.1)
(1) Check fuel pressure with engine off and using scan tool connected to data link connector No. 3 with ignition on to activate fuel pump or by connecting battery voltage to terminals on electric fuel pump.
(1)Check fuel pressure with engine off and using scan tool connected to data link connector No. 3 with ignition on to activate fuel pump or by connecting battery voltage to terminals on electric fuel pump.

FUEL PUMP PERFORMANCE

ApplicationSpecification
At Idle With Vacuum33-38 psi (2.3-2.7 kg/cm 2 )
At Idle Without Vacuum38-44 psi (2.7-3.1 kg/cm 2 )

REGULATED FUEL PRESSURE

ApplicationOhms
3.4L.2-3.0

FUEL PUMP RESISTANCE - Ohms @ 68°F (20°C)

FUEL INJECTOR RESISTANCE

ApplicationOhms
3.4L13.8

FUEL INJECTOR RESISTANCE - Ohms @ 68°F (20°C)

IDLE SPEED

ApplicationRPM
3.4L650-750
(1) Check with engine at normal operating temperature, transmission/transaxle in Neutral, parking brake applied, air cleaner and all vacuum hoses installed, ignition timing properly set, electric cooling fan off (if equipped) and A/C and all accessories off.
(1)Check with engine at normal operating temperature, transmission/transaxle in Neutral, parking brake applied, air cleaner and all vacuum hoses installed, ignition timing properly set, electric cooling fan off (if equipped) and A/C and all accessories off.

IDLE SPEED SPECIFICATIONS (1)

THROTTLE OPENER

ApplicationRPM
3.4L900-1950
(1) Check with throttle opener vacuum hose disconnected and plugged, engine at normal operating temperature and electric cooling fan turned off (if equipped).
(1)Check with throttle opener vacuum hose disconnected and plugged, engine at normal operating temperature and electric cooling fan turned off (if equipped).

THROTTLE OPENER SPECIFICATIONS (1)

FUEL CUT

ApplicationFuel Return RPM
A/T1200
M/T1000
(1) Check with engine at normal operating temperature and A/C off.
(1)Check with engine at normal operating temperature and A/C off.

FUEL CUT SPECIFICATIONS (1)

THROTTLE POSITION (TP) SENSOR

Application TypeClearance In. (mm)Terminals TestedOhmmeter Reading
3.4L (1)Fully ClosedVTA & E2200-5700
"Fully OpenVTA & E22000-10,200
""VC & E22500-5900
(1) Apply vacuum to throttle opener before checking TP sensor.
(1)Apply vacuum to throttle opener before checking TP sensor.

TP SENSOR RESISTANCE SPECIFICATIONS