Mass air flow sensor for AUDI A4, Mass air flow sensor for MERCEDES-BENZ C-Class, Mass air flow sensor for BMW 1 Series; Top FORD FOCUS models. FOCUS III, FOCUS (DAW, DBW), FOCUS III Turnier, Focus Mk4 Hatchback (HN), Focus II Estate (DA_, FFS, DS) Top categories. Injectors for FORD FOCUS, Mass air flow sensor for FORD FOCUS, Aintier Air Sensor Mass Air Flow Sensor MAF Fit for 1999-2002 for Ford E-150 E-250 2000-2004 for Ford Focus Mustang 2000-2003 for Mercury Sable 2005-2006 for Mercury Mariner AFLS-154A 4.2 4.2 out of 5 stars (34) Dec 24, 2014 · How to test a MAF Sensor using a basic multimeter without having to look up a wiring diagram. If you liked this video you may find these other videos useful Jul 17, 2021 · This causes the actual air flow to be higher than the mass air flow sensor measures. As a result, the PCM miscalculates the amount of the injected fuel, and the engine runs "lean". The term "lean" means too much air and too little fuel. The effect of a vacuum leak is more noticeable at idle, when the air flow is lower. Dec 19, 2013 · Common Symptoms of a BAD Ford MAF Sensor This is not the most definitive list on the subject, but does cover the majority of symptoms I've seen on these types of Ford Mass Air Flow Sensors: 1) MAF Codes that light up the CHECK ENGINE LIGHT (CEL) on your Instrument Cluster. P0102 MAF Signal Low Input to PCM. P0103 MAF Signal High Input to PCM. Oct 24, 2019 · 1. Rough Idling. If you pull up to a red light or intersection and your engine idles, you may notice your Mercedes feels juddery or is excessively loud. If so, you may be experiencing a rough idle. There can be many causes for this, but a likely culprit is the MAF sensor. This is because the air-to-fuel mixture in your Mercedes engine is biscbZ.

ford focus mass air flow sensor symptoms