How does a flow meter work / What is this flow meter for?
Content
The flowmeter became famous in spite of itself because of the problems it caused. Many owners of modern diesel engines have problems with meter clogging, which usually causes black smoke associated with loss of power.
But what is this flow meter for?
Again, there is nothing rocket science about the role of the flow meter, since its job is to measure the mass of air entering the engine (air intake) to indicate how the injection and EGR valve work in a particular context. . Indeed, one should be aware that modern injection systems are extremely accurate in terms of fuel metering, so the computer must know the amount of air entering the engine in order to regulate this metering to the nearest millimeter.
The latter is located in the place where the engine "gets air", that is, in front of the air intake after the air chamber (where, therefore, the air filter is located).
How can a flow meter fail?
It's simple: the flow meter can no longer be used when it can no longer properly measure the air supplied to the engine (roughly the amount of incoming air). Therefore, it is after the clogging of the latter that it cannot make accurate measurements. Therefore, it sends erroneous information to the computer, which leads to improper operation of the engine (injection). The engine can also go into "safe mode", reducing performance to reduce the risk of damage.
However, unlike the exhaust gas recirculation valve, it is not easy to clean and will usually have to be replaced ... Fortunately, if the meter easily cost 500 euros before 2000, it is now easy to find it for less than a euro. 100.
What are the symptoms?
The problem with meter clogging is that it can cause a wide variety of symptoms. It goes from loss of power to problems with starting, including untimely settings ... Consumption will also often be higher, because the optimization of the output becomes difficult for the ECU as it no longer has the correct data regarding atmospheric conditions. The result can also be abnormally high smoke levels due to poor combustion or even poor control of the EGR valve by the computer (learn more about this valve). In this case, nothing prevents you from turning off the flow meter and then trying to see if the smoke is still there, this can lead you to the track.
Check / test the air flow meter without disassembling
Some feedback on this flowmeter issue
Seat Leon (1999-2005)
V6 (2.8) 204 hp of 2001 186000 km : Engine temperature sensorflow meter Defective air camshaft + crankshaft sensor, as well as ABS and ESPS Haldex (4 × 4)
Peugeot Partner (1996-2008)
1.6 HDI 90 ch Year 2010 1.6 hdi 90 XV Manu box with comfort finish : flow meter 3-fold anti-roll bar link
Renault Laguna 1 (1994 - 2001)
1.9 dCi 110 hp : Quite fragile catalyst, changed twice in 2 YEARS.flow meter air
Peugeot 407 (2004-2010)
3.0 V6 210 hp, full SW variant except xenon v6 24 v from 2005 BVA 252000 km : Sudden start failure, starter motor turns, key is recognized but ignition no longer occurs, "anti-pollution faulty" warning light on dashboard. Suspicion of BSI or BSM or computer, EGR valve, coil, submersible pump, fuse or body butterfly relay, flow meterwith ... .. I check each element and do it by an exception method.
Mercedes C-Class (2007-2013)
180 CDI 120 ch BE avant garde facelift 2012 chrome package interior, aluminum rim 17 : flow meter the section was changed to 125000 km Continued to a new one flow meter, instant perforation of the air chamber shell connected to a turbo engine purchased at 88000 km from a Mercedes dealership
Seat Toledo (1999-2004)
Peugeot 807 (2002-2014)
2.0 HDI 110 inches : flow meter and nozzles
Toyota Yaris (1999 - 2005)
1.0 hp : flow meter 200 thousand kilometers
Mercedes C-class (2000-2007)
220 CDI 143 channels : flow meter , seals, DPF, injectors
Opel Zafira 2 (2005-2014)
1.9 CDTI 120 channels : – EGR bath flow meter– flywheel – cable for closing the door and lifting the seat – premature wear of the seats
Nissan Micra (1992-2003)
1.4 80 h.p. Automatic transmission, 145000 km, 2001, rim 15, chic finish : Observation in 20 years Replacement of the flow meter sensor for 90 km and 000 faulty window mechanisms ... I don't know which of the current cars can say the same
Citroen C4 Picasso (2006-2013)
1.6 HDI 112 ch 144000 km 2011 BM6 Millenium : Frequent breakdowns. I think I had almost everything: all the injectors were changed, repeated leaks of the injector seal, flow meter HS, fragile clutch replaced at 120000 130000 km / s, A / C HS at 143000 2200 (compressor and radiator), cylinder head gasket at XNUMX XNUMX km (XNUMX euros), cooling hose rupture due to engine wear (undoubtedly the reason for jdc), control brakes out of order, faulty power window controls, in short, a problem car that is pumping out of the wallet.
Fiat Panda (2003-2012)
1.3 MJT (d) / Multijet 70 ch 11/2004 active class or? 2eme main 433000 km, evolution : Basically, all the problems were associated with a faulty wiring harness (she always slept on the street), with a deteriorated operation in rainy weather (sensor error flow meter), loss of codes, then headlights, power window motor, burned out steering column switch, problem with the weight of the rear lights, an error in the EGR sensor (because of this, the engine light is on almost constantly, I erase from the side, there is no pb pollution). Solution, if possible, every year a contact bomb. Front tires less than 5000 due to improper installation of the shock absorber despite the fix, otherwise very few other serious problems Water pump and accessory drive belt at 205000 230000 km, wiper mechanism for 1, original but tired release bearing, original exhaust, I replaced 4 shock absorbers once, a lot of front grounding parts (I do 90% of small country roads), I changed the rear drums twice because the trim came off, 2 handbrake cables. The former owner just changed the windshield and rear brakes to 1. Don't know if that matters, but I've always tried not to pull the turbo cold and always waited 200000 seconds before turning off the engine.
Mercedes SLK (1996-2004)
230K 197 hp Automatic transmission : After 14 years flow meter , driver's glass, automatic door closing, alarm, heating regulator, brake switch ,, block K40, oil level sensor, camshaft sensor. HS key
Opel Zafira (1999-2005)
2.0 DTi 100 channels : Flowmeter
Ford Focus 1 (1998-2004)
1.8 TDCi 100 HP 250 km on the odometer : Flywheel (for 230 km) Turbo (with another 000 km) Battery (for 250 km) Starter (for 000 km) Spark plugs in advance to make sure of faults
Peugeot 407 (2004-2010)
1.6 HDI 110 ch Box 5 – 170000 07 km – 2008/XNUMX : – Clutch changed twice, the first time by the previous owner at 80000 km and the second time by me at 160000 km – LCD display that no longer displays when it is hot in the cabin – Alternator is fucking 140000 km .- flow meter weight and injector changed the previous owner.
Alfa Romeo 156 (1997-2005)
Citroën C3 (2002-2009)
1.6 HDI 110 inches : flow meter
Mercedes E-class (2009-2015)
250 CGI 204 channels : Particulate filter, air mass meter.
All comments and reactions
Dernier comment posted:
John (Date: 2021, 04:11:17)
Kia ceed since 2008 totals 374.000 km, no problems with electronics and ct is ok.
Il I. 3 reaction (s) to this comment:
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