help help please audi a4tdi

[seanb]

hi all i need your help just brought a audi a4 tdi estate on way home it seemed slow going up hills it reallt strugels doing 45 60 tops its got no go in it and without taking it 2 a garage and them charging me loads 2 tell me what it is i thought i would try u on hear hope u can help thx sean

[ini]

Welcome to the forum Sean.

This is a very common problem on TDI engines. You are experiencing 'limp mode'.

This is a reduced power mode, generally caused by 'boost pressure' deviating from that expected by the car.

It can normally be reset by cycling the ignition.

If you dont have any associated black smoke, the first thing to check is the Mass/AirFlow meter.

If you unplug the connector to the MAF, and the car runs a little smoother or 'the same' or better, clean or replace the MAF.

You can clean it by spaying a residue free solvent (carb cleaner) at the probe inside.

If it is a Bosch type i would just get a new part.

[seanb]

hi first gear thx loads 4 that but this is my first deisel and audi so dont no were the maf is what would the connector look like and could i damage it driving it like that thx again sean

[ini]

The MAF is on the intake for the air filter box.

[Cyber_A3]

the mass airflow meter will look like this

http://www.mjmautohaus.com/catalog/i...0280218063.jpg

I need to disconnect mine also on my A3 but I don't know how to remove the connector as it has some sort of strange clip??

Anyone know how to remove it. Maybe this would help bothe sean and I?

Thanks

[ini]

The probe is held in with either 5 point 'security star' screws, or 6 point 'security torx' screws. (the security part denotes the middle post/hollow bit)

[Cyber_A3]

The probe is held in with either 5 point 'security star' screws, or 6 point 'security torx' screws. (the security part denotes the middle post/hollow bit)

Thanks for that, I did notice the security star screws but thought that their may be another way to disconnect it. I think I have got some of the keys so I will try tonight.

Thanks again.

[seanb]

hi all thanks 4 all your help iknow where it is now , when i take it off how will i know if it is any good or not again thanks 4 the help thanks sean

[seanb]

hi all thanks 4 all your help iknow where it is now , when i take it off how will i know if it is any good or not again thanks 4 the help thanks sean

[ini]

If you are replacing the complete MAF (not just the probe) it bolts onto the airbox lid.