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Opel Frontera UE. Manual - part 840

6E1–243

X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

Step

Yes

Value(s)

Action

Check for the following engine mechanical problems:

Low compression

Leaking cylinder head gasket

Worn or incorrect camshaft

Loose timing belt

Was a problem found?

—

Verify repair

Go to Step 12

1. Review all the diagnostic procedures within this

table.

2. If all procedures have been completed and no

malfunctions have been found, review/inspect the
following:

Visual/physical inspection.

Tech 2 data

Freeze Frame data/Failure Records buffer.

All electrical connections within suspected
circuit and/or system.

Was a problem found?

—

Verify repair

Contact

Technical

Assistance

6E1–244

X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

DETONATION/SPARK KNOCK SYMPTOM

DEFINITION:
A mild to severe ping, usually worse under acceleration.
The engine makes sharp metallic knocks that change
with throttle opening.

Step

Action

Value(s)

Yes

Was the On–Board Diagnostic (OBD) System Check
performed?

—

Go to Step 2

Go to OBD

System

Check

1. Perform a bulletin search.
2. If a bulletin that addresses the symptom is found,

correct the condition as instructed in the bulletin.

Was a bulletin found that addresses the symptom?

—

Verify repair

Go to Step 3

Was a visual/physical check performed?

—

Go to Step 4

Go to Visual /

Physical

Check

1. If Tech 2 readings are normal and there are no

engine mechanical faults, fill the fuel tank with a
known quality gasoline that has a minimum octane
rating of 87. Refer to Typical Scan Values.

2. Re–evaluate the vehicle performance.

Is detonation present?

—

Go to Step 5

Verify repair

1. Check for obvious overheating problems:

Low engine coolant.

Restricted air flow to radiator, or restricted
water flow through radiator.

Incorrect coolant solution. It should be a 50/50
mix of approved antifreeze/water.

Incorrect EGR operation. Refer to DTC
P0401.

2. If a problem is found, repair as necessary.

Was a problem found?

—

Verify repair

Go to Step 6

Check fuel pressure. Refer to Fuel System Pressure
Test.

Was a problem found?

—

Verify repair

Go to Step 7

Check items that can cause an engine to run lean.
Refer to Diagnostic Aids in DTC P0171.

Was a problem found?

—

Verify repair

Go to Step 8

Check spark plugs for proper heat range. Refer to
General Information.

Were incorrect spark plugs installed?

—

Verify repair

Go to Step 9

1. Remove excessive carbon buildup with a top engine

cleaner. Refer to instructions on the top engine
cleaner can.

2. Re–evaluate vehicle performance.

Is detonation still present?

—

Go to Step 10

Verify repair

6E1–245

X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

Step

Yes

Value(s)

Action

Check for an engine mechanical problem. Perform a
cylinder compression check. Refer to Engine
Mechanical.

Was a problem found?

—

Verify repair

Go to Step 11

1. Review all diagnostic procedures within this table.
2. If all procedures have been completed and no

malfunctions have been found, review/inspect the
following:

Visual/physical inspection

Tech 2 data

Freeze Frame data/Failure Records buffer

All electrical connections within a suspected
circuit and/or system

Was a problem found?

—

Verify repair

Contact

Technical

Assistance

6E1–246

X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

ROUGH, UNSTABLE, OR INCORRECT IDLE, STALLING SYMPTOM

DEFINITION:
Engine runs unevenly at idle. If severe, the engine or
vehicle may shake. Engine idle speed may vary in RPM.
Either condition may be severe enough to stall the engine.

Step

Action

Value(s)

Yes

Was the On–Board Diagnostic (OBD) System Check
performed?

—

Go to Step 2

Go to OBD

System

Check

1. Perform a bulletin search.
2. If a bulletin that addresses the symptom is found,

correct the condition as instructed in the bulletin.

Was a bulletin found that addresses the symptom?

—

Verify repair

Go to Step 3

Was a visual/physical check performed, including the
rotor, ignition coil and secondary ignition wires?

—

Go to Step 4

Go to Visual /

Physical

Check

Verify that the EGR valve is not mounted backwards.

Was a problem found?

—

Verify repair

Go to Step 5

1. Check for incorrect idle speed. Ensure that the

following conditions are present:

Engine fully warm.

Accessories are OFF.

2. Using a Tech 2, monitor IAC position.

Is the IAC position within the specified values?

Between 10

and 50

counts

Go to Step 8

Go to Step 7

1. Visually/physically inspect for the following

conditions:

Restricted air intake system. Check for a
restricted air filter element, or foreign objects
blocking the air intake system.

Check for objects blocking the IAC passage or
throttle bore, excessive deposits in the IAC
passage and on the IAC pintle, and excessive
deposits in the throttle bore and on the throttle
plate.

Check for a condition that causes a large
vacuum leak, such as an incorrectly installed
or faulty crankcase ventilation valve brake
booster hose.

Was a problem found?

—

Verify repair

Go to Step 7

Using a Tech 2, monitor TP angle with the engine idling.

Is the TP angle at the specified value and steady?

Go to Step 8

For further

diagnosis,

refer to DTC

P0123

Check for proper ignition voltage output with the spark
tester 5-8840-0383-0.

Was a problem found?

—

Verify repair

Go to Step 9

1. Remove the spark plugs and check for gas or oil

fouling, cracks, wear, improper gap, burned
electrodes, heavy deposits or improper heat range.

2. If spark plugs are fouled, the cause of the fouling

must be determined before replacing the spark
plugs.

Was a problem found?

—

Verify repair

Go to Step 10

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