PAT


suppliers


aaaa logo

Member of Australian Automotive Aftermarket Association

PRTC Council Member

4WD Council Member



Latest News

Variable Intake Manifolds (VIM) and Intake Control Valves (ICV)

What technicians need to know about Variable Intake Manifolds and Intake Control Valves on today’s vehicles.

Variable Intake Manifolds

These systems utilise an ECU controlled means of altering the intake manifold passage lengths that the intake air must pass through prior to entering the cylinder head.

These manifolds may be: - 2 stage paths
- 3 stage paths
- Continuously variable paths.

This has the advantage of maximising volumetric efficiency through the entire RPM range.

A typical 2 stage manifold torque curve indicates the increased affect during both paths.

The transfer in path lengths is carried out by actuators. These may be either vacuum operated or electrical.

Typical faults found in the Variable intake system.

  • Vacuum leaks preventing VIM actuator operation.
  • Physical binding due to carbon build up or wear.
  • Electrical vacuum valve faults preventing vacuum / actuator operation.

Note: Accurate system testing is essential as the manifold removal procedure is comprehensive.

Other features on this manifold system.

Air flaps (Tumble flaps) are located on the intake manifold to assist in the air/ fuel mixing process at lower Engine RPM.

Typical faults found in this intake flap system.

  • Vacuum leaks preventing Flap actuator operation.
  • Physical binding due to carbon build up or wear.
  • Electrical vacuum valve faults preventing vacuum/ actuator operation.

Note: The VIM-002 is a commonly renewed unit due to the damage to the flap operating pivot lever caused by hot engine oil leaking on the lever resulting in the eventual breakage. Any oil leak on the leaver should be rectified to prevent premature lever damage.

Intake Control Valves (ICV)

Various functions of an ICV.

The BMW “DISA” valve (roughly translated from German to “Differentiated Intake) is an ICV located on the intake manifold that is utilised by many BMW models to intermittently block of and divert internal airflow (pressure wave) through the resonance tubes prior to entering the cylinders during low RPM conditions.

This results in the longer airflow path for engine speed conditions generally below 3750 RPM.

During engine speeds of over 3750 RPM the DISA valve opens and allows the “pressure wave” intake air to shorten its path to increase air flow to the cylinders.

Potential DISA valve faults that affect engine fuel mixtures that generally results in:

  • Rough idling
  • Loss of power
  • Increased fuel consumption 
  • Increased emissions 

This valve has the potential to fail in a few ways.

  • Valve unable to stay closed creating a rattling noise during idle conditions.
    Note: For test purposes, unplugging the valve during engine idle will generally eliminate the rattle as the airflow will push the valve open.
  • Diaphragm or related components failure.
  • Air seal failure generally causing vacuum leaks.

Other types of ICV valves

ICV-005 Intake Control Valve is an electric drive module utilised to operate the swirl flaps on a Diesel engine when required.

The Premier Auto Trade Emission range includes Variable Intake Manifolds and Intake Control Valves covering over 124,000 vehicle applications in Australia and NZ.

When you supply and fit products from Premier Auto Trade you can expect a product designed and tested to the vehicle manufacturer’s specifications offering OE form, fit and function. Premier Auto Trade distributes products throughout Australia via a network of specialised resellers and leading automotive groups.


 



Latest News

Performance Fuel Cells & Surge Tanks

Fault Finding Fuel Pressure Regulators (FPR)

Testing Variable Camshaft Actuators (VCA)

Testing Accelerator Pedal Position Sensors (APS)

Diagnosing Crank Angle Sensors (CAS)

Performance Regulators and Gauges

Differentiating Wheel Speed Sensors (WSS)

Mass Air Flow Sensors - Hot Film

Mechanical Fuel Pumps (MFP)

ICON Series Hoses

Particulate Matter Sensors (PMS)

Performance Fuel Injectors

Fuel Injectors (GDI)

DENSO Spark Plugs

Performance Fuel Pumps

Cooling Fan Switches (CFS)

Water Temperature Sensors (WTS)

Reverse Light Switches

Oil Temperature Sensors (OTS)

BMC Air Filters

Flasher Cans

Exhaust Pressure Sensors (EPS)

Power Steering Switches

Coolant Temperature Sensors (CTS)

Variable Intake Manifolds (VIM) and Intake Control Valves (ICV)

Oil Level Sensors (OLS)

Throttle Position Sensors (TPS)

Air Temperature Sensors (ATS)

Ignition – Condensers, Contact Sets, Distributor Caps and Rotors

Fuel System Accessories (FSA)

MAP Sensors (MAP)

Relays (REL)

HALL Sensors and Pickups (HAL)

Fuel Rail Sensors (FRS)

Speed Sensors (SPS)

New ICON Series Fuel Pump Range

New ICON Series Hose Range

Performance Range Increase Continues

PAT Oxygen Sensor Range Expands

PAT Expands Automotive Aftermarket Presence

Equipment and Tools

Electric Fuel Pumps (EFP)

Electric Valve Solenoids (EVS)

CAM Angle Sensors (CAM)

Ignition Modules (MOD)

Injector Service Components

Electric Water Pumps (EWP)

Exhaust Gas Temperature Sensors (EGT)

Throttle Bodies

Knock Sensors

Ignition Coils

Fuel Injectors (Petrol)

Variable Camshaft Actuators (VCA) Oil control Valves

Accelerator Pedal Position Sensors (APPS)

Exhaust Gas Recirculation Valves (EGR)

Relocation of Sydney Distribution Centre

Wheel Speed Sensors (WSS)

High Tension - Ignition Lead Sets (ILS)

Suction Control Valves (SCV)

Mass Air Flow (MAF) Sensors

Crank Angle Sensors (CAS)

Fuel Pressure Regulators (FPR)

Oil Pressure Sensors

Exhaust Gas Oxygen Sensors

Shedding Light on Stop Light Switches

Ignition Distributors

Common Rail Diesel (CRD) Fuel Injectors

Idle Speed Control

New Distribution Centre Opening in ADELAIDE

New Distribution Centres Opening in PERTH and DARWIN

New Fuel Catalogue from Premier Auto Trade

BMC 4WD Air Filters Range Expands

New MVP Fuel Injector Range

PAT Developing Programs on Demand

New Premium Packaging for PAT

New Product Ranges Released By PAT

PlusQuip Test Equipment Range Expands

New Raceworks Catalogue

New Exhaust Gas Temperature Sensors

New Trade Catalogues from Premier Auto Trade

New Distribution Centre Opening in Adelaide

More European Parts from Premier Auto Trade

New PlusQuip Fuse Current Tester

PAT Pumped up!

Coils ain't Coils!

New PlusQuip Electronic EGR, Throttle Body, and Actuator Tester

New breed of High Performance products!

New Ignition Coil and Lead Set Kits

Wheel Speed Sensor Program Launched

Premier Ignition Lead Program Launch

Ignition Coils - Coils ain't Coils!

PlusQuip Battery Testers Launch

Premier Auto Trade Supporting Local Racing

Oval Trumpet Airbox (OTA) for 4WD applications from BMC Air Filters

BMC Air Filters NOW AVAILABLE from Premier Auto Trade

Premier Ignition Coils

MAP-013 and KNS-021 Now Back in Stock

BMC Air Filter partners with Premier Auto Trade

Premier Auto Trade opens South Australian Distribution Centre

Direct Fit Oxygen Sensor Range Hits 700

Automotive Electro-Mechanical Relays Types / Faults / Diagnosis

PlusQuip Tools and Equipment Launch

PlusQuip Fuel Line Repair Kit

PlusQuip Fuel Injector Service Kit

E85 High Performance with Premier Auto Trade

Testing EGR Systems (Pt 2)

New Delphi Fuel Module and Ignition Coil Range

Fuel Injector Service Components from Premier Auto Trade

Older News...

   privacy statement   terms of use   terms and conditions   sitemap   news  

© PremierAutoTrade