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LAMBDA SENSORS O2 SENSORS OXYGEN SENSORS

Alfa Lambda sensor problems. These are also called Oxygen Sensors and O2 sensors

       These are common faults we can supply the original Lambda sensor made in Italy by the OE manufacture. Please click here.

Symptoms of a faulty Lambda sensors

Erratic Idle.
    Can be caused by the faulty sensor giving the wrong out put signal to the ECU, if the heater element fails the car will run to rich as the ECU thinks the car is running at a cold temperature causing the ECU to constantly try to cut the mixture strength back to correct the situation. Beyond which the flame front will not burn cleanly, leading to misfire and increased emissions. Often black smoke from the exhaust is emitted.

Alfa Airflow meters

Air Flow Meters are a common problem on most European cars at the moment and Alfa Romeo are 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. The fault will often not be shown on 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 air flow 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 Air flow meter is faulty is to unplug the wiring loom start the car if the car runs ok then the fault is with the airflow meter.
Luckily Airflow meters are very easy to fit and normally only take 5 minutes to fit you do not need any special tools to fit them and with a very small purchase price they are no major problem when there go wrong.

 Beware however as Lambda (or Oxygen) sensors in the exhaust can also give very similar symptoms to Air Flow Meters.

 

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4 Bridge Cottage
Ockendon Road
North Ockendon
Essex
RM14 3QP

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www.probedistributors.co.uk
Manufacturing and supplying brand new and recondition distributors, repair kits including shafts, bearings, hall sensors, magnetic pickup sensors coils, modules, caps and rotors arms. We also offer a free rebuild repair and fitting service please phone for more details. 

www.mapsensors.co.uk
supplying high quality map sensors for the modern motor vehicle, made to the original manufacturers specification which you can buy at a fraction of the original price, we can now supply 95% of all makes and models.

www.ignitionmodules.co.uk

New Ignition Modules for all types of motor vehicle we can fit custom made modules to any ignition system, Japanese imports our speciality,

www.camshaftsensors.co.uk
supplying high quality camshaft sensors for the modern motor vehicle, made to the original manufacturers specification which you can buy at a fraction of the original price including all hall and magnetic types

www.ignitionleads.co.uk
 
Supplying high quality ignition leads for the modern motor vehicle, made to the original manufacturer’s specification, we can also supply KN racing leads these are 10 mm sets made to a very high specification finished in electric blue.

www.crankshaftsensors.co.uk
supplying high quality crankshaft sensors for the modern motor vehicle, made to the original manufacturers specification, all types in stock.

www.ignitioncoil.co.uk
Supplying high quality ignition coils for the modern motor vehicle, made to the original manufacturers specification which you can buy at a fraction of the original we have all types including the pencil coils, dry coils, oil filled, coil rails and block types.

www.airflowmeters.co.uk
supplying high quality airflow meters made to the original manufacturers specification we have all types in stock our range covers 95% of all makes and models

www.cranksensors.info
 Supplying information and technical data. We can supply Waveforms of all types of hall and magnetic sensor for use in the motor industry.



 

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