Opel Frontera UBS. Manual - part 2356

 

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Opel Frontera UBS. Manual - part 2356

 

 

6E–460

6VE1 3.5 ENGINE DRIVEABILITY AND EMISSIONS

Surges and/or Chuggles Symptom

  (Cont'd)

Step

No

Yes

Value(s)

Action

19

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 three-way
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 20

20

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–461

6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS

Lack of Power, Sluggish, or Spongy Symptoms

 

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

Was the “Electric Throttle Control (ETC) System
Check” performed?

Go to 

Step 3

Go to 

ETC

System

Check

3

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 4

4

Was a visual/physical check performed?

Go to 

Step 5

Go to 

Visual/

Physical

Check

5

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 6

6

1. Check for low fuel pressure.  Refer to 

Fuel System

Pressure Test.

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

Was a problem found?

Verify repair

Go to 

Step 7

7

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 8

8

1. Install the Tech 2.
2. Run the engine at idle.
3. On the Tech 2, select F3: Miscellaneous Test, F6:

Variable Intake Manifold.

4. Repeat Switch ON or OFF of VIM solenoid valve by

using the Tech 2.

5. Check to see if the actuator works normally.
6. If a problem is found, repair as necessary.

Was a problem found?

Verify repair

Go to 

Step 9

9

1. Check for proper ignition voltage output with spark

tester J 26792 (ST-125).  Refer to 

Electronic Ignition

System for procedure.

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

Was a problem found?

Verify repair

Go to 

Step 10

6E–462

6VE1 3.5 ENGINE DRIVEABILITY AND EMISSIONS

Lack of Power, Sluggish, or Spongy Symptoms

  (Cont'd)

Step

No

Yes

Value(s)

Action

10

1. Remove the spark plugs and check for wet plugs,

cracks, wear, improper gap, burned electrodes, or
heavy deposits.  Refer to 

Electronic Ignition

System.

NOTE: If spark plugs are gas or oil fouled, the cause of
the fouling must be determined before replacing the
spark plugs.

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

Was a problem found?

Verify repair

Go to 

Step 11

11

1. Check the ignition coils for cracks or carbon

tracking.

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

Was a problem found?

Verify repair

Go to 

Step 12

12

1. Check the PCM grounds for cleanliness, tightness

and proper locations.  Refer to the PCM wiring
diagrams in 

Electrical Diagnosis.

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

Was a problem found?

Verify repair

Go to 

Step 13

13

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 three-way
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 15

14

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

operation.  Refer to 

4L30-E Transmission

Diagnosis.

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

Was a problem found?

Verify repair

Go to 

Step 15

15

1. Check for an engine mechanical problem.  Check

for low compression, incorrect or worn camshaft,
loose timing belt, etc.  Refer to 

Engine Mechanical.

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

Was a problem found?

Verify repair

Go to 

Step 16

16

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–463

6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS

Detonation/Sparks Knock Symptoms

 

Step

Action

Value(s)

Yes

No

1

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

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

If Tech 2 readings are normal (refer to 

Typical Scan

Values) and there are no engine mechanical faults, fill
the fuel tank with a known quality gasoline that has a
minimum octane rating of 87 and re-evaluate the
vehicle performance.

Is detonation present?

Go to 

Step 5

Verify repair

5

1. Check the transmission range switch circuit.  Use a

Tech 2 and be sure the Tech 2 indicates that the
vehicle is in drive with the gear selector in drive or
overdrive.

2. If a problem is found, diagnose and repair the

transmission range switch as necessary (refer to
4L30-E Automatic Transmission Diagnosis).

Was a problem found?

Verify repair

Go to 

Step 6

6

1. Check TCC operation.  Refer to 

4L30-E

Transmission Diagnosis.

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

Was a problem found?

Verify repair

Go to 

Step 7

7

1. Check for obvious overheating problems:

D

Low engine coolant.

D

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

D

Correct coolant solution should be a 50/50 mix
of approved antifreeze/coolant and water.
Refer to 

Engine Cooling.

D

EGR operation.  Refer to 

DTC P0401.

D

ION sensing module fault.

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

Was a problem found?

Verify repair

Go to 

Step 8

8

1. Ignition “OFF”.
2. Disconnect the ION sensing module.
3. Disconnect the PCM.

Is the action complete?

Go to 

Step 9

9

Check the ION sensing harness between the PCM
(F68) and ION sensing module circuit (RED Wire) at
the Kl line harness connector.

Was a problem found?

Verify repair

Go to 

Step 10

 

 

 

 

 

 

 

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