TOYOTA SUPRA 1986 Service Repair Manual

FUEL CUT RPM
FUEL CUT RPM INSPECTION
1. WARM UP ENGINE
Allow the engine to warm up to normal operating tempera-
ture.
2. CONNECT TACHOMETER TO ENGINE
Connect the tester probe of a tachometer to terminal IG
of
the DLC1.
NOTICE:
wNever allow the tachometer terminal to touch ground as
it could result in damage to the igniter and/or ignition
coil.
wAs some tachometers are not compatible with this igni-
tion system, we recommend that you confirm the compat-
ibility of your unit before use.
3. INSPECT FUEL CUTOFF OPERATION
(a) Increase the engine speed to at least 3,000 rpm.
(b) Check for injector operating noise.
(c) Check that when the throttle lever is released, injector
operation noise stops momentarily and then resumes.
HINT: Measure with the A/C OFF.
Fuel return speed:
1,400 rpm
4. DISCONNECT TACHOMETER
± ENGINESFI SYSTEM (2JZ±GE)EG±255

SERVICE SPECIFICATIONS
SERVICE DATA
 
 
Fuel pressure
regulator 
 
Fuel pressure at no vacuum 
 
265±304 kPa (2.7±3.1 kgf/cm2, 38±44 psi)
 Fuel pump Resistance at 20°C (68°F) 0.2±3.0

 
 
 
Injector 
 
 
Resistance
Injection volume
Difference between each cylinder
Fuel leakage 
 
 
13.4±14.2

70±88 cm3 (4.3±5.4 cu in.) per 15 sec.
9 cm
3 (0.5 cu in.) or less
One drop or less per minute
 
 
 
 
 
VAF meter
 
 
 
 
 
Resistance (THA±E2) at±20°C (±4°F)
at 0°C (32°F)
at 20°C (68°F)
at 40°C (104°F)
at 60°C (140°F)
 
 
 
 
 
10±20 k

4±7 k

2±3 k

0.9±1.3 k

0.4±0.7 k

 
 
 
 
Throttle body 
 
 
 
Throttle body fully closed angle
Dashpot setting speed M/T
A/T
Throttle opener setting speed 
 
 
 
65
2,600 + 400 rpm
1,800 + 400 rpm
1,500 + 400 rpm
 
 
 
 
 
Throttle
position
sensor 
 
 
 
 
Clearance between stop screw and lever
0 mm (0 in.) VTA±E2
0.40 mm (0.016 in.) IDL±E2
0.60 mm (0.024 in.) IDL±E2
Throttle valve fully open VTA±E2
± VC±E2 
 
 
 
 
0.34±6.3 k

0.5 k
or less
Infinity
2.4±11.2 k

3.1±7.2 k

 IAC valve Resistance B1 (or B2)±Others 18±22
 VSV for ACIS Resistance at 20°C (68°F) 38.5±44.5
 
 
 
 
 
VSV for Fuel
pressure
control
(California
only)
 
 
 
 
 
Resistance at 20°C (68°F)
 
 
 
 
 
33±39

 VSV for EVAP Resistance at 20°C (68°F) 27±33

 VSV for EGR Resistance at 20°C (68°F) 38.5±44.5
 
 
 
 
 
 
ECT sensor 
 
 
 
 
 
Resistance at ±20°C (±4°F)
at 0°C (32°F)
at 20°C (68°F)
at 40°C (104°F)
at 60°C (140°F)
at 80°C (176°F) 
 
 
 
 
 
10±20 k

4±7 k

2±3 k

0.9±1.3 k

0.4±0.7 k

0.2±0.4 k

 
 
EGR gas
temperature
sensor 
 
Resistance at 50°C (122°F)
at 100°C (212°F)
at 150°C (302°F) 
 
64±97 k

11±16 k

2±4 k

 
 
 
Main heated
oxygen sensor
(California)
 
 
 
Heater coil resistance at 20°C (68°F)
 
 
 
11±16

EG±256± ENGINESFI SYSTEM (2JZ±GE)

 
 
 
Sub heated
oxygen sensor
(California
only) 
 
 
Heater coil resistance at 20°C (68°F) 
 
 
11±16

 
 Fuel cut rpm
 
 Fuel return rpm
 
 1,400 rpm
TORQUE SPECIFICATIONS
 Part tightened NVm kgfVcm ftVlbf
 
 
Fuel line for union bolt
for flare nut 
 
29
30 
 
300
310 
 
22
22
 Fuel pressure regulator x Delivery pipe 8.8 90 78 in.Vlbf
 Delivery pipe x Intake manifold 21 210 15
 Actuator for ACIS x Air intake chamber 6.8 70 61 in.Vlbf
 Fuel inlet pipe x Delivery pipe 41 420 30 Fuel return pipe x Fuel pressure regulator 27 280 20 Air intake chamber stay x Cylinder head 18 185 13 
Air intake chamber stay x Air intake chamber
 
18
 
185
 
13 
Intake air connector x Air intake chamber
 
27
 
270
 
20 
 Throttle body bracket x Throttle body
 
 21
 
 210
 
 15
 Throttle body bracket x Cylinder head 21 210 15
 No.2 vacuum pipe x Intake manifold 27 270 20
 EGR pipe x Cylinder head 27 270 20
 EGR pipe x EGR valve 64 650 47
 
 
Fuel pressure pulsation damper x Fuel pipe support
for SST 
 
41
35 
 
420
350 
 
30
25
 Starter x Transmission 39 400 29
 Fuel tank band x Body 39 400 29 VAF meter x Air cleaner case 10 100 7 Throttle body x Intake air connector 21 210 15 
Vacuum tank x Intake manifold
 
21
 
210
 
15 
Brake booster union x Air intake chamber
 
29
 
300
 
22 
 Air intake chamber x Intake manifold
 
 27
 
 270
 
 20
 EGR gas temperature sensor x EGR valve 20 200 14
 Knock sensor x Cylinder block 44 450 33
 Oxygen sensor (Except California) x Exhaust manifold 20 200 14
 Main heated oxygen sensor (California) x Exhaust manifold 44 450 33
 Sub heated oxygen sensor (California only) x Center exhaust pipe 20 200 14
± ENGINESFI SYSTEM (2JZ±GE)EG±257

ENGINE
EG±1

EG±2

ENGINE MECHANICAL
PREPARATION
SST (SPECIAL SERVICE TOOLS)
09201±10000 Valve Guide Bushing Remover &
Replacer Set
(09201±01060) Valve Guide Bushing Remover &
Replacer 6
09202±70010 Valve Spring Compressor
09213±70010 Crankshaft Pulley Holding Tool
09222±30010Connecting Rod Bushing Remover
& Replacer
09223±15030 Oil Seal & Bearing ReplacerCrankshaft rear oil seal
09248±55040 Valve Clearance Adjust Tool Set
(09248±05410) Valve Lifter Press
(09248±05420) Valve Lifter Stopper
09301±00110 Clutch Guide Tool2JZ±GE M/T
09316±60010 Transmission & Transfer Bearing
Replacer
(09316±00010) Replacer PipeCrankshaft front oil seal
Camshaft oil seal
± ENGINEENGINE MECHANICALEG±3

(09316±00050) Replacer ªDº
09330±00021Companion Flange Holding Tool
09608±30022 Front Hub Bearing Replacer Set
(09608±05010) Handle
09816±30010 Oil Pressure Switch Socket
09843±18020 Diagnosis Check Wire
09950±50010 Puller C Set
(09951±05010)Hanger 150
(09952±05010) Slide Arm
(09953±05020) Center Bolt 150
(09954±05010)Claw No.1
(09954±05030)Claw No.3
09960±10010 Variable Pin Wrench Set
(09962±01000) Variable Pin Wrench Arm AssyCamshaft timing pulley
Camshaft pulley
Crankshaft timing pulley
Crankshaft pulley
Crankshaft timing pulley
Crankshaft pulley
Crankshaft timing pulley
Crankshaft pulley
Crankshaft timing pulley
Knock sensor
Oil pressure switch
Crankshaft rear oil seal
Valve guide bushing
Crankshaft pulley
Camshaft oil seal
EG±4± ENGINEENGINE MECHANICAL

(09963±01000) Pin 10Camshaft timing pulley
RECOMMENDED TOOLS
Cylinder head bolt
A/C compressor stud bolt
For suspending engine
09040±00010Hexagon Wrench Set

09043±50100Bi±hexagon Wrench 10 mm

09044±00020 Torx Socket E10

09082±00050 TOYOTA Electrical Tester Set
09090±04010 Engine Sling Device

09200±00010 Engine Adjust Kit

09258±00030 Hose Plug Set


EQUIPMENT
 Caliper gauge 
 CO/HC meter 
 
 Compression gauge
 
 
 Connecting rod aligner 
 Cylinder gauge 
 
 Dial indicator 
 
 Dye penetrant 
 Engine tune±up tester 
± ENGINEENGINE MECHANICALEG±5

 Heater 
 Micrometer 
 
 Mirror
 
 
 Magnetic finger 
 Piston ring compressor 
 
 Piston ring expander
 
 
 Plastigage 
 Precision straight edge 
 
 Spring tester
 
 Valve spring
 Steel square Valve spring
 Thermometer 
 
 Torque wrench 
 
 Valve seat cutter 
 Vernier calipers 
 
 V±block 
 
SSM (SERVICE SPECIAL MATERIALS)
 
 
 
08826±00080 
 
 
Seal Packing Black or equivalent
(FIPG) 
 
 
No.1 camshaft bearing cap
Cylinder head
Rear oil seal retainer
 
 
 
08833±00070 
 
 
Adhesive 1324,
THREE BOND 1324 or equivalent 
 
 
Drive plate bolt (A/T)
Union for oil cooler hose
(2JZ±GTE)
 
 
 
08833±00080 
 
 
Adhesive 1344,
THREE BOND 1344,
LOCTITE 242 or equivalent 
 
 
Idler pulley pivot bolt
Oil pressure switch
EG±6± ENGINEENGINE MECHANICAL

IDLE AND OR 2500 RPM CO HC CHECK
HINT: This check is used only to determine whether or not the
idle CO/HC complies with regulations.
1. INITIAL CONDITIONS
(a) Engine at normal operating temperature
(b) Air cleaner installed
(c) All pipes and hoses of air induction system connected
(d) All accessories switched OFF
(e) All vacuum lines properly connected
HINT: All vacuum hoses for EGR system, etc. should be prop-
erly connected.
(f) SFI system wiring connectors fully plugged
(g) Ignition timing set correctly
(h) Transmission in neutral position
(i) Tachometer and CO/HC meter calibrated by hand
2. START ENGINE
3. RACE ENGINE AT 2,500 RPM FOR APPROX. 180
SECONDS
4. INSERT CO/HC METER TESTING PROBE AT LEAST 40
cm (1.3 ft) INTO TAILPIPE DURING IDLING
5. IMMEDIATELY CHECK CO/HC CONCENTRATION AT
IDLE AND/OR 2,500 RPM
HINT: When performing the 2 mode (2,500 rpm and idle) test,
follow the measurement order prescribed by the applicable
local regulations.
± ENGINEENGINE MECHANICALEG±7