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6 Causes Of Acceleration Problems In Vauxhall Insignia

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6 Causes Of Acceleration Problems In Vauxhall Insignia

Vauxhall Insignia also called Opec Insignia was developed by Opec, a German car manufacturer in 2008. Since its conception in October 2008, Vauxhall Insignia has manufactured many car models with the first model using a 1.5L Ecotec turbo I4 petrol engine and the recent model using a 3.6L LGX V6 engine.

Many Vauxhall Insignia owners have raised complaints over the years regarding poor acceleration or rough engine operation in their cars. Most of the time, a slow or poor acceleration is a sign your Insignia engine has developed some fault. As a result, you have to fix it right away to prevent more damage to your car.

When you start noticing these problems, it means your car has detected a fault and has shut down some functions in the engine. This feature is termed limp mode and it works to protect your car’s engine from any further damage. 

What Vauxhall Insignia Engine Model Experiences These Acceleration Problems?

engine bay
Photo : Pexels

The LDK / A20NHT power steering pump variants of the Vauxhall Insignia often have these acceleration problems. These problems are brought on by a loss of power caused by a faulty turbocharger charging pressure control system, an error in the engine’s computer software, or mechanical issues. 

What Are The Causes Of Acceleration Problems In Vauxhall Insignia?

vauxhall wheel
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The most frequent reasons why you’re experiencing a poor acceleration in your Vauxhall Insignia include dirty mass air flow sensors (MAF), clogged air and fuel filters,

  1. Dirty mass air flow sensors (MAF),
  2. Clogged air and fuel filters,
  3. Damaged oxygen sensors,
  4. Dirty throttle bodies,
  5. Bad spark plugs,
  6. Clogged catalytic converters.

Less frequent reasons include:

  1. Defective ignition coils,
  2. Unclean fuel injectors,
  3. Clogged engine oil filters,
  4. Transmission issues,
  5. Worn piston rings,
  6. Blown head gaskets.

Illumination of the engine malfunction indicator bulb (MIL) is typically a sign that your engine has malfunctioned. Here are more details about these reasons:

Dirty Mass Air Flow Sensors 

air flow sensor
Photo by Envato Elements

Your Vauxhall Insignia car may have problems accelerating properly because of faulty mass air flow sensors (MAF). These mass air flow sensors calculate the total amount of air entering the engine, and once they get faulty or dirty, they can lead to power loss, unstable engine operation, misfires, and poor exhaust emission, including black smoke. 

Impeded or clogged Air Filter

air filter
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Air filters that are wet and dirty can impede acceleration and damage the engine. Your Vauxhall Insignia’s engine may fail if the air filter is dirty because a dirty air filter restricts airflow, stifling the engine and raising fuel consumption. 

Air filters that are wet and dirty can impede acceleration and damage the engine. Your Vauxhall Insignia’s engine may fail if the air filter is dirty because a dirty air filter restricts airflow, stifling the engine and raising fuel consumption. 

Clogged Fuel Filters

changing car fuel filter
Photo by Envato Elements

The fuel filter of your Insignia works like the air filter. The difference is that the fuel filter rids the fuel of impurities like rust and dirt before they can enter your car’s engine’s fuel injection system. So, a clogged fuel filter in your Vauxhall Insignia will starve your engine of fuel. This can cause loss of power and acceleration problems.  

Bad Spark Plugs Plugs

spark plugs
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Your Insignia may be having issues with acceleration as a result of a bad spark plug. The Vauxhall Insignia engine typically has four spark plugs, and if any of them are damaged or not producing sparks properly, the engine will no longer operate at its best. This will become apparent if you experience difficulties with acceleration, higher fuel usage, or jerking when driving.

Fuel Pump Malfunction

fuel pump
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Similar to how a heart beats, the fuel pump in your Insignia transfers fuel from the fuel tank to the engine’s carburettor or fuel injector while the car is in motion. A damaged fuel pump can affect acceleration as well as other difficulties including a hard time starting the engine, stalling when driving, and a drop in fuel efficiency. 

Impeded Catalytic Converter 

Impeded Catalytic Converter 
Photo by Envato Elements

The exhaust system of Vauxhall Insignia engines comprises a catalytic converter, commonly referred to as an emission control device. Its major function is to convert exhaust gases like carbon monoxide, which are bad for the environment and human health, into less hazardous by-products. These toxic substances, which were separated from the exhaust gases by filtering, can cluster and shut off the catalytic converter, which will affect acceleration.

How Do I Fix Acceleration Problems In My Vauxhall Insignia?

Photo : Pexels

Your car should accelerate swiftly and effectively if it is properly maintained. But occasionally, you might have issues with acceleration in your Vauxhall Insignia vehicle. That can be risky, so it’s important to have it looked at and addressed right away. What to do if your Insignia has an acceleration problem is listed below.

  • Check if the air filter is dirty and make sure to replace it. 
  • If the mass air flow sensor is dusty or defective, check it and replace it if necessary. 
  • Clean the fuel filter if it has accumulated dirt.
  • Check the oxygen sensor for any errors.
  • Clean the throttle body on your Insignia if there are any accumulated residues.
  • Examine the gasoline pumps for issues. Before replacing the gasoline pump, make sure it is broken because it is pretty expensive.
  • Check the spark plugs or the ignition coil, and replace them if necessary.
  • To clean the fuel injector’s nozzles, use fuel injector cleaners. Make sure that the injector cleaner is recommended to avoid damaging the oxygen sensor.
  • Ensure that the engine oil filter of your Vauxhall Insignia is dirt and particle free.

Final Thoughts

You may be having issues accelerating your Vauxhall Insignia for a variety of reasons. The majority of the time, poor acceleration is caused by an obstructed air or fuel filter. Nevertheless, you should visit a workshop and seek assistance from a qualified mechanic if you are not too familiar with car parts and repairs.


What is my car vibrating abruptly?

Your car can vibrate as a result of a worn spark plug, a dirty or clogged fuel filter, or an engine that has overheated.

Why is my car suddenly losing power while I’m accelerating it?

There are a lot of potential causes for your automobile to lose power when accelerating, like problems with the exhaust system, fuel flow, and airflow into the engine.