Maf Sensor

[RCLORLEY]

My A class is reading a sporadic fault in the component B2/5 (hot film MAF sensor. I've been quoted £800 by mercedes dealer without inc labour or VAT to replace .does anyone know of anywhere cheaper in the south cheshire area or is that as cheap as i'm gonna find?

 

[veedweeb]

How much???

Try German Swedish & French: http://www.gsfcarparts.com/ - there's one in Trafford Park

or Eurocarparts http://www.eurocarparts.com/

to supply a new MAF.

Fitting is the easiest job in the world. If you can change a light bulb, you can change a MAF sensor.

 

[RCLORLEY]

ok thanks . i've had a garage say they can fit it in an hour but they want £600 for the part

 

[veedweeb]

What year and engine is your car? £600 seems very expensive to me.

The ones for my C240 are "only" £200

 

[RCLORLEY]

It's A A140 Yr 2000.i've No Idea How To Do It Though Once I Have The Part.

 

[veedweeb]

Neither GSF nor Euro have them listed. Odd...

I did a bit of looking around and found this link: http://www.bba-reman.com/content.aspx?content=mercedes_a_class_air_mass_meter_and_ecu

It looks like these people remanufacture MAFs.

One thought though - if yours is kippered, they can sometimes be saved by thoroughly cleaning with isopropyl alcohol.

Remove the sensor, spray a load of isopropyl alcohol (available from Maplins) and allow it to dry naturally. Don't allow anything - not even your breath - to touch the inside of the sensor.

There's a chance that'll sort it, and if not, it was knackered anyway.

 

[RCLORLEY]

That's Been Tried It Worked Fine For About 200 Hundred Yards Then Went Again So Think It's Totally Knackered. It's Been Like This For 4 Months But Get No Joy From The Garage A Got It From. Thanks For Your Help I'll Check That Site

 

[veedweeb]

Bit of background information...

The MAF sits in the airflow between the air filter and the engine itself. It has a wire which is heated to a preset temperature by the engine's computer (ECU). When the engine sucks air in, the air cools the wire.
The ECU can measure the cooling effect and work out how much air is going in, and adjust the fuelling as required.
Any contamination on the wire will cause it to burn out, which is what sounds like has happened to yours.
It's REALLY important to make sure you change the airfilter regularly, and don't use any performance (K&N, Pipercross or whatever) filters. Just use a standard one. That should help the MAF last a bit longer when it is replaced.

That link above for the remanufacturing says they charge £140, which is a saight better than the original quote of £800!

 

[RCLORLEY]

I've Only Owned It Since Feb And Was Told It Was Fully Serviced But I Think That Was Bull. The Link Took Me To Ecu Rebuild , I'd Looked At Them Would This Be The Best Thing To Do. I've Had So Many People At Garages Try To Baffle Me With Car Lingo So They Can Rip Me Off , As I Know Absolutley Nothing About Them. My Dad's Offered To Fix It But Mercedes Said You Can't Even Get Near It Without The Right Equipment.

 

[veedweeb]

First question, did you get any warranty with the car?

If not, then it looks like you're stuck with shelling out some cash.

You can go to a Merc dealer and give them £800, or you can get your unit rebuilt (with a 2 year warranty) for either £140 or £250 - depends on the type.

I don't know about needing special equipment to remove it, but on my C class, and other cars I've changed the MAFs on, you just need a security torx screwdriver bit. They cost about a fiver for a set.

It's a tough call, 'cos either way your out of pocket, but it's up to you which way you go. There's a few independent Merc specialists who might be able to have a look and offer some more help.

Good luck with it

 

[RCLORLEY]

I Got A Care Protect Warranty Where They'll Pay The First £500, But Even Then I'd End Up Paying Out £300 Plus And It's Only Warranteed For A Year At Most . Think I'll Probably End Up Going With The Ecu Rebuild

 

[kth286]

RCLORLEY

Why dont you ask for the part number of the device and then shop around to check what you've been told is true.

To get the part nunber go to your parts dept. at Merc dealer with your car VIN. It's the long number for your car's identification. Anyone can go to the retail parts dept. not just trade.

They can print off a quote for you immediately which you can take away.

Then put that number on this forum and we can look around some of the parts databases and let you know the truth.

I know that fitting may be slightly difficult due to engine being between two floor layers on A class.

Get the part number from parts dept. and let us know.

Regards