COVID-19 Message Updated: 1st Oct
Mail Order Customers:
  *
Our carrier DHL is operating near normally across the world with its Air Express service. Allow an extra day for delivery (4 days for Australia and New Zealand), just in case.
  * For the UK only, Royal Mail are delivering the vast majority of orders on time according to our data, but is experiencing higher levels of staff absences, so there may some local delays.
  * We will be working normally and have a large warehouse full of parts that will help keep your car on the road. However, we are seeing some supply delays from factory lockdowns around the world.
Workshop Customers:
  *
We have strict social distancing processes internally and disinfect daily (not least because we have staff in vulnerable groups). In the circumstances, we have had to close our waiting room. Our mechanics wear gloves at all times and we will disinfect your vehicle with our Zaflora sprays on handing back to you. We would respectfully ask you to show our staff the same courtesy. We also have full amount contactless payment systems.
  * In these times of fluctuating demand, it's highly advisable to book your vehicle in earlier than usual. We are currently very busy indeed.

Alfa

Alfa Airflow Meter

Diagnosing a MAF problem

Air Flow Meters are a common problem for most European car manufacturers at the moment and Alfa Romeo is no exception.

Air Flow Meters measure the amount of air passing into the engine from which the computer can work out how much fuel to add to get the perfect mixture for that specific throttle opening, the computer does this by referring to a map in its memory. The Air Flow Meter works by seeing how much current it takes to keep a wire at a specific temperature. However it is a sensitive instrument and it can be contaminated by oil (often used in after-market performance air filters), damaged by excess vibration caused by broken air boxes and we have seen problems with the GTV 3.0 litres being fitted with 2.0-litre filters which leaves about an inch gap through which contamination gets in.

The fault will often not be shown on the diagnostic system as the meter will still be operating within the limits the computer believes are OK, but putting the correct amount of fuel in for idle when the throttle is fully open will result in a very weak mixture and thus a lack of power.

The V6 and Diesel engines generally first get a flat spot ¾ of the way up the rev range and this gradually extends up to the rev limit and will rob up to 50 BHP from the V6 engines, we have known them to be lucky to get over 80 mph in really bad cases.

The 4 cylinder engines are less prone to failure than the V6's and the symptoms are more subtle with again a flat spot at approximately ¾ of maximum revs but just a reluctance to want to rev to its maximum when the problem is acute.

The airflow meters will occasionally fail completely which will bring up a light on the dash and the symptoms described here are only the usual ones as we have known the fault to become apparent in other ways.

The easiest way to check if the Airflow meter is faulty is to get your local friendly Alfa Romeo garage to try one for you as they take very little time to fit, in most cases it is quicker than putting the car on the examiner and it is always nice to see the look on a customers face as they rocket off into the distance. Beware however as Lambda (or Oxygen) sensors in the exhaust can also give very similar symptoms to Air Flow Meters.

Related Links: Alfa Airflow Meter Online Store | Fixed Price Servicing | Alfa Romeo Parts | Modern Alfa Romeo Engine Bay

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