Opel Frontera UBS. Manual - part 512

6E–178

4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS

Hard Start Symptom

  (Cont'd)

Step

No

Yes

Value(s)

Action

12

1. Check the battery voltage.
2. If a problem is found, repair as necessary.

Was a problem found?

—

Verify repair

Go to 

Step 13

13

1. Check for the following engine mechanical

problems (Refer to 

Engine Mechanical):

D

Low compression

D

Leaking cylinder head gaskets

D

Worn or incorrect camshaft

D

Camshaft drive belt slipped or stripped

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

Was a problem found?

—

Verify repair

Go to 

Step 14

14

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:

D

Visual/physical inspection

D

Tech–2 data

D

Freeze Frame data/Failure Records buffer

D

All electrical connections within a suspected
circuit and/or system.

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

Was a problem found?

—

Verify repair

Contact

Technical

Assistance

6E–179

4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS

Surges and/or Chuggles Symptom

 

Step

Action

Value(s)

Yes

No

1

DEFINITION:
Engine power variation under steady throttle or cruise.
Feels like the vehicle speeds up and slows down with
no change in the accelerator pedal.

Was the “On-Board Diagnostic (OBD) System Check”
performed?

—

Go to 

Step 2

Go to 

OBD

System

Check

2

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

3

Was a visual/physical check performed?

—

Go to 

Step 4

Go to 

Visual/

Physical

Check

4

Be sure that the driver understands transmission
torque converter clutch and A/C compressor operation
as explained in the owner’s manual.
Inform the customer how the TCC and the A/C clutch
operate.

Is the customer experiencing a normal condition?

—

System OK

Go to 

Step 5

5

1. Check the priming pump.  Refer to 

Fuel System.

2. If a problem is found, operate the priming pump.

Was a problem found?

—

Verify repair

Go to 

Step 6

6

1. Injector Test

Operate the each injector by Tech 2 with the
ignition “ON” and check if the working noise
confirm.

2. If a problem is found, check the harness and repair

as necessary.

Is the action complete?

—

Verify repair

Go to 

Step 7

7

1. Check ECM grounds for the cleanliness, tightness

and proper locations.  Refer to the ECM wiring
diagrams in 

Electrical Diagnosis.

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

Was a problem found?

—

Verify repair

Go to 

Step 8

8

1. Check AP sensor connections.
2. If a problem is found, replace the faulty terminals as

necessary.  Refer to 

Electrical Diagnosis for wiring

repair procedures.

Was a problem found?

—

Verify repair

Go to 

Step 9

9

1. Visually/physically check vacuum hoses for splits,

kinks, and proper connections and routing as
shown on the “Vehicle Emission Control
Information” label.

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

Was a problem found?

—

Verify repair

Go to 

Step 10

6E–180

4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS

Surges and/or Chuggles Symptom

  (Cont'd)

Step

No

Yes

Value(s)

Action

10

1. Check the exhaust system for possible restriction:

D

Inspect the exhaust system for damaged or
collapsed pipes.

D

Inspect the muffler for heat distress or possible
internal failure.

D

Check for a possible plugged catalytic
converter by checking the exhaust system
back pressure.  Refer to 

Restricted Exhaust

System Check.

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

Was a problem found?

—

Verify repair

Go to 

Step 11

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:

D

Visual/physical inspection

D

Tech 2 data

D

Freeze Frame data/Failure Records buffer

D

All electrical connections within a suspected
circuit and/or system.

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

Was a problem found?

—

Verify repair

Contact

Technical

Assistance

6E–181

4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS

Lack of Power, Sluggish or Spongy Symptom

 

Step

Action

Value(s)

Yes

No

1

DEFINITION:
Engine delivers less than expected power.  Little or no
increase in speed when accelerator pedal is pushed
down part-way.

Was the “On-Board Diagnostic (OBD) System Check”
performed?

—

Go to 

Step 2

Go to 

OBD

System

Check

2

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

3

Was a visual/physical check performed?

—

Go to 

Step 4

Go to 

Visual/

Physical

Check

4

1. Remove and check the air filter element for dirt or

restrictions.  Refer to 

Air Intake System in

On-Vehicle Service.

2. Replace the air filter element if necessary.

Was a repair required?

—

Verify repair

Go to 

Step 5

5

1. Check AP sensor system.  Refer to 

AP sensor

diagnostic.

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

Was a problem found?

—

Verify repair

Go to 

Step 6

6

1. Check for water-or alcohol-contaminated fuel.
2. If a problem is found, repair as necessary.

Was a problem found?

—

Verify repair

Go to 

Step 7

7

1. Using a Tech 2, Injector test.
2. If a problem is found, repair as necessary.

Was a problem found?

—

Verify repair

Go to 

Step 8

8

1. Check the ECM grounds for the cleanliness,

tightness and proper locations.  Refer to the ECM
wiring diagrams in 

Electrical Diagnosis.

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

Was a problem found?

—

Verify repair

Go to 

Step 9

9

1. Check the exhaust system for possible restriction:

D

Inspect the exhaust system for damaged or
collapsed pipes.

D

Inspect the muffler for heat distress or possible
internal failure.

D

Check for a possible plugged catalytic
converter by checking the exhaust system
back pressure.  Refer to 

Restricted Exhaust

System Check.

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

Was a problem found?

—

Verify repair

Go to 

Step 10

10

1. Check the torque converter clutch (TCC) for proper

operation.  Refer to 

Transmission Diagnosis.

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

Was a problem found?

—

Verify repair

Go to 

Step 11