Repair Air mass sensor ? - Benzworld.org

Arvid · 11-26-2004, 11:12 AM

My 1999 model E 240 have a bad mass sensor. I have read some place ,the are possible to repar the sensor, but I can't find it. Have anyone read about this ? [?]

mjhawkins2346 · 11-26-2004, 11:39 AM

Good luck on that one. They are very delicate (unfortunately) and are critical to the proper operation of the engine. Basically, they measure the volume of air by putting a precise electrical current through the wires in the middle -- and measure the changing resistance.

It's too bad they are so expensive. I would check ebay (and make sure it's warranted to work) or the discount parts sellers (many listed in posts here).

I'm not sure I would ever want my reliability tied to a "repaired" Mass Airflow Sensor. IMHO

sosh · 11-26-2004, 01:36 PM

Not repaiable. Don't buy on EBay, too much depends on this. Why would anyone sell a good one ??? Get a new one at your dealer

Storm. · 11-27-2004, 09:32 PM

I'm in agreement with sosh, there is too much riding on that part, get it once and get the right thing,... go to the dealer.

E300POS · 11-29-2004, 08:41 AM

I think by repair he means cleaning. I think I've read you can remove it and clean it with an electrical parts spray cleaner. Often, they simply get dirty. If you're going to replace it anyway, what would it hurt to try? Remove the part, spend $5.00 on some spray and see what happens. If that's what you're talking about, let us know how it turns out.

E Wagon · 11-29-2004, 10:16 PM

I seem to have decent results with cleaning my MAF. I get 22-23 mpg with city driving.

I cleaned the sensor with CRC contact Cleaner 2000 (dichlorofluoroethane) two months ago and the CEL has not returned.

mrhappy71 · 11-30-2004, 12:29 AM

just got me a new one at the dealer for my 2000 e320
ran me about $350 wonder how it got messed up i only have about 35000 miles on my car oh well.

Arvid · 11-30-2004, 08:33 AM

O'boy. Today I buy a new air mass sensor from a Mercedes dealer. ($320,00)What a difference. The car have been slow and very rough idle.After the new sensor ,the car are better than new.( 64k) The car accelerate much quicker than before. (Sorry my bad english) I try to clean the old sensor with q-tips, bruch and alcohol. Negativ. Worse than before I try to clean it. Thank you all for post . Regards Arvid

Mercedes 1999 E 240
Mercedes 1971 350 SL
Chevrolet 1925 Truck
Chevrolet 1929 Touring
Chevrolet 1932 Tudoor
Willys Jeep 1943
Harley Davidson 1919
Yamaha 1993 1100 ccm
[:)]