Clean your Air Mass Sensor !!!!!

[James H]

Hello all from another newcomer to the forum

- I don't know whether this thread might be the answer to my problem. Just bought a 1999 A6 Avant 2.5 TDi and am a bit unimpressed by the performance compared to the chipped Passat TDi it replaces.

There is no sign of the turbo coming on boost - is this the way it should be? - and it just doesn't seem to pull as I expected. At 4000 rpm it stops pulling as if it has hit a wall - I know max output is at 4000 ish, but still ....

Any ideas anyone? MAFF? Fouled injectors (no dirty exhaust or rough idling)? er, something else entirely?

thanks in anticipation.

James.

[KentGuy]

Sure I want to know how, but I also want to know where it is in the engine bay... can you help ?

[idua02]

Got the same issues on my A6, do you mind sharing how u cleaned it?

[CloggsA6]

I have a missing problem on my A6 2.4. I have posted here. Changed the plugs - thats how it started!... a camshaft sensor and now toying with HT leads. Could it be a MAF??? I remember my 80 TDi's was stuffed when I px'd it but the guy who took it in reflected that in the price! Cheeky sod.

[kevnewcastle]

Steve, Can you tell me how to change the MAF? I do my own oil, plug, filter changes and often wonder if there are other things I should do keep it tip-top. This sounds like one of those things?

Thanks

Kev.

[Col]

Interesting subject this one.

I was at one point convinced that cleaning was the way forward on this and used to do it regularly, even did a how-to on it on the UKMKIV's forum.

But I'm afraid in my case with my Golf, all it did was have a placebo effect whereby you thought it was actually doing something. It didn't

When I eventually fitted a new MAf the difference was dramatic, performance was back and so was the fuel economy.

The problem seems to be the the degredation of the MAF is very gradual so that you don't notice it if your driving the car daily.

[ladyinred]

Howzit Steve...

I live down here in sunny South Africa and drive an A6 Avant 2.6E V6
ABC engine. Please share with me how u go about chanfing/cleaning MAF sensor..

Thanks in advance

[brickit]

A MAF is a cylindrical shaped device that is located inbertween the air filter housing and the inlet manifold (or turbo if you have one). It will have an electrical connection with 4 -5 wires.
A dead easy job to remove.

[gooders30]

i'll try this one out it might save me a few quid

[Paulieb]

Hi there, I'm responding to an old post you made back in Feb. I'd like to know how you cleaned your MAF!! If that's not too much of a personal question.

Paulieb