Opel Frontera UE. Manual - part 1410

6A–17

ENGINE MECHANICAL (6VD1 3.2L)

Fuel Consumption Excessive

Condition

Possible cause

Correction

Trouble in fuel system

Mixture too rich or too lean due to
trouble in fuel injection system

Refer to “Abnormal Combustion”

Fuel cut function does not work

Refer to “Abnormal Combustion”

Trouble in ignition system

Misfiring or abnormal combustion
due to trouble in ignition system

Refer to “Hard Start” or “Abnormal
Combustion”

Others

Engine idle speed too high

Reset Idle Air Control Valve

Fuel system leakage

Correct or replace

Clutch slipping

Correct

Brake drag

Correct

Selection of transmission gear
incorrect

Caution operator of incorrect gear
selection

Excessive Exhaust Gas
Recirculation flow due to trouble in
Exhaust Gas Recirculation system

Refer to “Abnormal Combustion”

Lubrication Problems

Condition

Possible cause

Correction

Oil pressure too low

Wrong oil in use

Replace with correct engine oil

Relief valve sticking

Replace

Oil pump not operating properly

Correct or replace

Oil pump strainer clogged

Clean or replace strainer

Oil pump worn

Replace

Oil pressure gauge defective

Correct or replace

Crankshaft bearing or connecting
rod bearing worn

Replace

Oil contamination

Wrong oil in use

Replace with correct engine oil

Oil filter clogged

Replace oil filter

Cylinder head gasket damage

Replace gasket

Burned gases leaking

Replace piston and piston rings or
cylinder body assembly

Oil not reaching valve system

Oil passage in cylinder head or
cylinder body clogged

Clean or correct

Engine Oil Pressure Check

1. Check for dirt, gasoline or water in the engine oil.

a. Check the viscosity of the oil.
b. Check the viscosity of the oil.
c. Change the oil if the viscosity is outside the

specified standard.

d. Refer to the “Maintenance and Lubrication” section

of this manual.

2. Check the engine oil level.

The level should fall somewhere between the “ADD”
and the “FULL” marks on the oil level dipstick.
If the oil level does not reach the “ADD” mark on the
oil level dipstick, engine oil must be added.

3. Remove the oil pressure unit.

4. Install an oil pressure gauge.
5. Start the engine and allow the engine to reach normal

operating temperature (About 80

°

C).

6. Measure the oil pressure.

Oil pressure should be:

392–550 kPa (56.9–80.4 psi) at 3000 rpm.

7. Stop the engine.
8. Remove the oil pressure gauge.
9. Install the oil pressure unit.

10. Start the engine and check for leaks.

SECTION

6A–18

ENGINE MECHANICAL (6VD1 3.2L)

Malfunction Indicator Lamp

The instrument panel “CHECK ENGINE” Malfunction
Indicator Lamp (MIL) illuminates by self diagnostic
system when the system checks the starting of engine, or
senses malfunctions.

Condition

Possible cause

Correction

“CHECK ENGINE” MIL does not
illuminate at the starting of engine

Bulb defective

Replace

illuminate at the starting of engine

MIL circuit open

Correct or replace

Command signal circuit to operate
self diagnostic system shorted

Correct or replace

Powertrain Control Module (PCM)
cable loosely connected,
disconnected or defective

Correct or replace

PCM defective

Replace

“CHECK ENGINE” MIL illuminates,
and stays on

Deterioration of heated oxygen
sensor internal element

Replace

Heated oxygen sensor connector
terminal improper contact

Reconnect properly

Heated oxygen sensor lead wire
shorted

Correct

Heated oxygen sensor circuit open

Correct or replace

Deterioration of engine coolant
temperature sensor internal element

Replace

Engine coolant temperature sensor
connector terminal improper contact

Reconnect properly

Engine coolant temperature sensor
lead wire shorted

Correct

Engine coolant temperature sensor
circuit open

Correct or replace

Throttle position sensor open or
shorted circuits

Correct or replace

Deterioration of crankshaft position
sensor

Replace

Crankshaft position sensor circuit
open or shorted

Correct or replace

Vehicle speed sensor circuit open

Correct or replace

Manifold absolute pressure sensor
circuit open or shorted

Correct or replace

Intake air temperature sensor circuit
open or shorted

Correct or replace

Fuel injector circuit open or shorted

Correct or replace

PCM driver transistor defective

Replace PCM

Malfunctioning of PCM RAM
(Random Access Memory) or ROM
(Read Only Memory)

Replace PCM

SECTION

6A–19

ENGINE MECHANICAL (6VD1 3.2L)

Drive Belt (Serpentine Belt)

033R100002

Legend

(1) Upper Fan Guide
(2) Cooling Fan and Fan Clutch

(3) Nut
(4) Clamp
(5) Drive Belt (Serpentine belt)

Removal

1. Disconnect the battery negative cable.
2. Remove the two bolts form upper side fan guide and

four clamps (4) from side of the fan guide for remove
the upper fan guide (1).

3. Remove the four nuts (3) from the fan pulley and

remove the cooling fan with the fan clutch (2).

4. Move the drive belt tensioner to loose side using

wrench then remove drive belt (5).

SECTION

6A–20

ENGINE MECHANICAL (6VD1 3.2L)

850RW001

Legend

(1) Crankshaft Pulley
(2) Cooling Fan Pulley
(3) Tensioner

(4) Generator
(5) Air Conditioner Compressor
(6) Power Steering Oil Pump
(7) Drive (serpentine) Belt

CAUTION:
1. Do not bend or twist the belt, otherwise its core

could be damaged. The belt should not be bent at
a radius less then 30 mm.

2. Do not allow oil or other chemical substances to

come in contact with the belt. They will shorten
the life.

3. Do not attempt to pry or stretch the belt with a

screw driver or any other tool during installation.

4. Store the belt in a cool and dark place. Never

expose the belt direct sunlight or heat.

SECTION