What Is a Normal Mass Air Flow Sensor Reading?

gsxr

.036 Hoonigan™, E500E Boffin, @DITOG

• #ii

With the engine at normal temp (80-100C) and airbox in place, VERY rough readings should be:

Idle rpm = 20 kg/60 minutes
1000rpm = 30kg
2000rpm = 60kg

Readings may vary based on other factors simply you lot should see something reasonably close. A totally dead MAF will ordinarily have a fixed reading which does non alter with RPM.

gsxr

.036 Hoonigan™, E500E Boffin, @DITOG

• #four

What is the reading if you lot hold the RPM's at 2000?

Also endeavour the activation for burnoff control, to make clean the hot wire, then check readings once again.

And, remember that MAF readings could be off if there is a vacuum leak somewhere in the intake tract.

What are your symptoms?

JC220

🇮🇪 Resto Jedi 🔧OCD Zinc Plating Blazon

• #6

FYI - M119 MAF Cleaning | M119 Engine

I recently acquired 2 more spare m119 MAF'southward and was initially disappointed in how the car ran when I tested them in my 500E. I could hear the idle getting uneven and the car was not happy with either sensor. I didn't throw them away but put them on the shelf and when thinking well-nigh it decided...

world wide web.500eboard.co

gsxr

.036 Hoonigan™, E500E Boffin, @DITOG

• #7

the reading reaches more than xl at 2000rpm
stmptoms are a strong carbon smell from the exhaust, also loftier fuel consumption.
those are the stored faults

Hmmm. That is strange. Another data bespeak, hold RPM's at 3000 and the reading should be around 100kg/hr. Again, this assumes the engine is hot and air cleaner/tubes are all in place.

The other 2 codes are likely not related, but indicate you have other problems...

JC220

🇮🇪 Resto Jedi 🔧OCD Zinc Plating Type

• #ix

thanks mr gsxr
can u please explain to me what is the activation of burnoff control?
the other two codes indicates a problem in the ETA, bcoz im using a w140 East-GAS unit instead of the original w124 East-GAS unit

FYI - M119 MAF Cleaning | M119 Engine

I recently acquired 2 more than spare m119 MAF's and was initially disappointed in how the car ran when I tested them in my 500E. I could hear the idle getting uneven and the car was non happy with either sensor. I didn't throw them away but put them on the shelf and when thinking about it decided...

www.500eboard.co

Read this mail service PLZ. The information you seek is right there

gsxr

.036 Hoonigan™, E500E Boffin, @DITOG

• #10

tin u delight explicate to me what is the activation of burnoff command?

In HHT-Win you can manually trigger the hot wire self-cleaning. It will warn y'all to but do this 1 fourth dimension. Details of how information technology works are in mail #ii of Joe'due south thread linked higher up.

the other 2 codes indicates a problem in the ETA, bcoz im using a w140 E-GAS unit instead of the original w124 E-GAS unit

Using a W140 Eastward-GAS module in a W124 (assuming both have ASR) should not cause error codes. Something else is wrong.

andersonanders1938.blogspot.com

Source: https://www.500eboard.co/forums/threads/what-are-normal-mass-airflow-sensor-maf-readings-in-live-data.14269/

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