heater OPEL FRONTERA 1998 Workshop Manual

ENGINE COOLING 6B – 5
ENGINE COOLANT CHANGE
PROCEDURE
1. To change engine coolant, make sure that the
engine is cool.
WARNING:
When the coolant is heated to a high temperature,
be sure not to loosen or remove the radiator cap.
Otherwise you might get scalded by hot vapor or
boiling water. To open the radiator cap, put a piece
of thick cloth on the cap and loosen the cap slowly
to reduce the pressure once the coolant has
become cooler.
2. Open radiator cap and drain the cooling system by
loosening the drain valve on the radiator and on the
cylinder body.
NOTE: For best results it is suggested that the engine
cooling system be flushed at least once a year. It is
advisable to flush the interior of the cooling system
including the radiator before using anti-freeze
(ethylene-glycol based).
Replace damaged rubber hoses as the engine anti-
freeze coolant is liable to leak out even minor cracks.
Isuzu recommends using Isuzu genuine anti-freeze
(ethylene-glycol based) or equivalent, for the cooling
system and not add any inhibitors or additives.
CAUTION:
A failure to correctly fill the engine cooling system
in changing or topping off coolant may sometimes
cause the coolant to overflow from the filler neck
even before the engine and radiator are completely
full.
If the engine runs under this condition, shortage of
coolant may possibly result in engine overheating.
To avoid such trouble, the following precautions
should be taken in filling the system.
3. To refill engine coolant, pour coolant up to filler neck
using a filling hose which is smaller in outside
diameter than the filler neck. Otherwise air between
the filler neck and the filling hose will block entry,
preventing the system from completely filling up.
4. Keep a filling rate of 9 liter/min. or less. Filling over
this maximum rate may force air inside the engine
and radiator.
And also, the coolant overflow will increase, making
it difficult to determine whether or not the system is
completely full.
5. After filling the system full, pull out the filling hose
and check to see if air trapped in the system is
dislodged and the coolant level goes down. Should
the coolant level go down, repeat topping-off until
there is no more drop in the coolant level.
6. Directly after filling the radiator, fill the reservoir to
the maximum level.
7. Install and tighten radiator cap and start the engine.
After idling for 2 to 3 minutes, stop the engine and
reopen radiator cap. If the water level is lower,
replenish.WARNING:
When the coolant is heated to a high temperature,
be sure not to loosen or remove the radiator cap.
Otherwise you might get scalded by hot vapor or
boiling water. To open the radiator cap, put a piece
of thick cloth on the cap and loosen the cap slowly
to reduce the pressure once the coolant has
become cooler.
8. After tightening radiator cap, warm up the engine at
about 2,000 rpm.
Set heater adjustment to the highest temperature
position, and let the coolant circulate also into
heater water system.
9. Check to see the thermostat has opened by the
needle position of a water thermometer, conduct a
5-minute idle again and stop the engine.
10. When the engine has been cooled, check filler neck
for water level and replenish if required. Should
extreme shortage of coolant be found, check the
coolant system and reservoir tank hose for leakage.
11. Fill the coolant into the reservoir tank up to “MAX”
line.

ENGINE ELECTRICAL 6D – 23
QOS4 PREHEATING SYSTEM
GENERAL DESCRIPTION
QOS4 preheating system features a quick-on glow plug
with thermometer control of the glowing time and the
afterglow time function.
The system consists of the ECM, indicator lamp, ECT
sensor, vehicle speed sensor, relay and temperature
self-control type glow plugs.With the employment of the ECT sensor, the glow time
changes according to the engine coolant temperature,
thus allowing optimum starting conditions to be
obtained.
The after glow time function is controlled by ECM.
NOTE:
Refer to DTC P0380 and P0381 of 6E section.
SYSTEM DIAGRAM
+
-KEY
50A
ECM
50A
GLOW
50A
2
WHT/
RED
0.5
BLK/
BLU
ECM J1-15 3
WHT/
RED
3
RED/
BLKMAIN
80A
8BLK/RED
Glow
Relay
GLOW PLUG 4
BATTHeater & A/C
Relay
060RW132

6G – 6 ENGINE LUBRICATION
OIL COOLER ASSEMBLY
REMOVAL
1. Disconnect battery ground cable.
2. Drain engine coolant.
3. Remove front exhaust pipe.
4. Remove heat protector.
5. Remove exhaust valve assembly.
6. Oil cooler assembly.
1) Remove water hose from water inlet and outlet
side.
2) Cloth should be put under the oil cooler to
prevent oil from flowing out.
3) Loosen fixing bolt then remove oil cooler
assembly.
Legend
(1) Oil cooler assembly
(2) Oil filter assembly
INSPECTION AND REPAIR
1. Inspect for corrosion, wear, and breaks on the oil
cooler core.
2. If a problem is found on the oil cooler core, the oil
cooler assembly must be replaced.
INSTALLATION
1. Oil cooler assembly
1) Tighten oil cooler fixing bolt to the specified
torque and install water hoses.
Torque: 29 Nꞏm (3.0 kgꞏm / 21.7 lb ft)
2. Install exhaust valve assembly to turbocharger
assembly and tighten to the specified torque.
Torque: 27 Nꞏm (2.7 kgꞏm / 19.5 lb ft)3. Install front exhaust pipe to the exhaust valve.
To r q u e :
67 Nꞏm (6.8 kgꞏ.m / 49.2 lb ft)
(At exhaust valve side)
43 Nꞏm (4.4 kgꞏm / 32 lb ft)
(At center exhaust pipe side)
4. Install heater protector.
5. Fill engine coolant.
6. Connect battery ground cable.
7. Start engine and carefully check for leakage of oil
and coolant.
OIL COOLER SPECIFICATIONS
OIL FILTER
REMOVAL
1. Put container under the oil filter to prevent oil from
the oil filter from flowing out.
2. Use filter wrench to remove oil filter.
Filter wrench: 5-8840-0203-0
INSTALLATION
1. Apply engine oil thinly to oil filter O-ring.
2. Tighten oil filter by hand until O-ring comes in
contact with the sealing surface.
3. Use filter wrench to tighten oil filter one turn and 1/8
turn.
4. Start engine and carefully check for oil leakage from
oil filter.
SUB OIL FILTER
The sub oil filter requires no servicing until the
replacement interval is reached.
The element is designed to provide special filtering
efficiency until it becomes due for replacement.
It is recommended to check and replace the sub oil filter
when the engine is being overhauled or if it is broken
inside the engine.
1
2
050RW009

6J – 10 INDUCTION
INTAKE MANIFOLD
REMOVAL
1. Drain engine coolant and remove water hose from
thermostat housing
2. Remove intercooler assembly.
3. Remove bracket fixing bolt of oil level gauge guide
tube.
4. Remove PCV hose.
5. Remove hoses from EGR valve, EGR vacuum
sensor and outlet of heater unit.
6. Disconnect harness connector from MAP sensor,
EGR vacuum sensor, ETC sensor, Water
temperature unit, IAT sensor and EVRV.
7. Remove high pressure oil pipe.
8. Remove two way check valve.
9. Remove fuel pipe.
10. Remove fixing bolts and nuts of intake manifold,
remove intake manifold assembly.
Legend
(1) Intake manifold
(2) Fixing portion of throttle valve
(3) EGR passage
(4) EGR valve
2
3
4
1
Legend
(1) Intake Manifold
(2) Throttle Valve Assembly
(3) EGR Valve
(4) Gasket
025RW022
3124
025RW031

INDUCTION 6J – 11
INSPECTION AND RAPAIR
1. Visually check for cracks/clogs inside intake
manifold.
2. If foreign material is observed, it should be taken
out, and if there are some cracks on the intake
manifold, it must be replaced.
INSTALLATION
1. Install the intake manifold assembly, tighten bolts
and to the specified torque.
Torque: 20 Nꞏm (2.0 kgꞏm / 14.5 lb ft) for bolt
Torque: 20 Nꞏm (2.0 kgꞏm / 14.5 lb ft) for nut
2. Install fuel pipe.
Torque: 4 Nꞏm (0.4 kgꞏm / 2.9 lb ft) for M16 nut
(Apply engine oil)
Torque: 13 Nꞏm (1.3 kgꞏm / 9.4 lb ft) for M10 cap nut
Torque: 14 Nꞏm (1.4 kgꞏm / 10 lb ft) for M10
(Apply engine oil)
3. Install two way check valve.
Torque: 20 Nꞏm (2.0 kgꞏm / 14.5 lb ft)
4. Fill with about 300 cc of engine oil from the high
pressure oil pipe installation port of the oil rail using
an oil filler.
If assembled without filling the oil rail with oil, the
time for engine starting will be longer.
5. Install high pressure oil pipe, then tighten sleeve nut
to the specified torque.
Torque: 29 Nꞏm (3.0 kgꞏm / 21.7 lb ft)
6. Reconnect harness connector to MAP sensor, EGR
vacuum sensor, ETC sensor, Water thermo unit,
IAT sensor and EVRV sensor.
7. Install hoses to EGR valve, EGR vacuum sensor
and Water outlet of heater.
8. Connect PCV hose.
9. Install oil level gauge guide and fix it.
10. Install intercooler assembly.
Refer to “Intercooler” in this manual.
11. Install water hose to thermostat housing and fill with
engine coolant.
Model of Turbocharger IHI RHF5
Turbine Maximum Speed 180,000 rpm
Maximum Inlet Gas Temperature 800 °C (1472 °F)
Vibration Peak (G) criteria Maximum 4 (G) at Turbine Rotor Speed 140,000 rpm
Tolerance Limit of Compressor Blade Height Less then 0.5 mm (0.0197 in)
MAIN DATA AND SPECIFICATIONS