Loose Maf

[mumof4]

I shall take a picture for you this morning.

 

To me a screw is aomething that just screws in and a bolt has a nut on the other end which fixes it in place..these just screw in.I have checked the pipe for the O ring and it is not there..well i cant find it.

 

I know that the O ring was there when i first fitted the maf...i remember it clearly as i couldnt get the maf on right so i contacted neil and he came out and just fished out the O ring from the pipe.So i know there was one.But there isnt now...

 

They are torx screws.

 

 

I appologise for my outburst last night.It was a very difficult night last night.But that is no excuse. :lol:

[MrT]

Mum4 is right when she says screws. There are two screws like large self tappers that hold the MAF housing on to the edge of the air filter cover. They are screwed into plastic and there are no captive nuts or metal inserts. All I can assume is they have been over tightened and pulled away the "threads" from the plastic. If this is the case the answer is to fill the holes in the cover with a little non brittle epoxy and once dried screw the screws back in and this will make new threads.

 

I found the MAF housing a very tight fit in the air filter cover.

[seatkid]

:lol: Have they changed the design ???

 

On mine (a Mk 1) the MAF housing are held by 2 allen (hex) head bolts (M5 I think). The "nuts" are metal nutserts in the airbox pipe flange. The "bolts" have a spring washer which stops them coming undone.

 

Are you sure these are torx screws? That must make screwing up the bottom one from the rear difficult. Or has someone fitted the wrong screws.... Take some close up pics and let us have a gander.

Edited September 13, 2006 by seatkid

[MrT]

On the Mk2 the air filter box is at the left hand side of the engine and the outlet pipe comes out of this at right angles and runs across the car parallel to the wiper tray. The MAF housing inserts into a molding on the lid of the filter box by approximately two inches and two posidrive self tappers hold it in place. The fit here is very tight with a large O ring. I cannot see the screws doing much other that stopping the MAF housing rotating.

 

At the back of the MAF housing is the sensor held on by two torx screws with security pins in the middle of them to stop normal torx drivers from being used. The other end of the MAF housing fits into a flexible tube with a strong steel clip around it. You need to remove the MAF housing to get at the torx screws. Removing the whole item takes about 2 minutes. There is also another sensor looking a bit like a screen washer motor attached to the back of the air filter box and the MAF cable.

[mumof4]

gimmee 5 mins and ill take a pic for you

[seatkid]

;) Just looked at a new Seat Toledo Tdi - Yes!! Self tapping screws!!! What carp!!!

 

My first Alhambra (1Z engine, 96) had a metal bodied MAF, then it in 98 changed to plastic.

VAG diesels held together with self tappers? :lol: Forget any idea about SK buying one of those.........

 

Those posidrive self tappers have evidently been overtightened, stripping the plastic. The MAF will fall out without the O ring. All in all a lot of damge by your service people. :lol:

[mumof4]

Ok..a series of pics..sorry bout the quality..there is a piece of plastic hanging off from where the screw goes in.in one pick i pushed the maf closed...I hope these help you understand what im on about...it is a torx screw i think....

[MrT]

Mine is quite different to those pictures.

[seatkid]

:lol: Must get some new glasses :lol: ;)

 

I think they must be posidrive screws....... ;)

 

TIP: When taking close up photos with your digicam - select macro mode - on canon cameras this is the meaning of the "tulip" symbol. The zoom should be set to "wide" (zoom out). This allows the camera to focus sharply when close.

 

No macro mode? Take the picture from a distance so the image is sharp and "crop" the image on your PC.

[mumof4]

ermm..is bog standard cheapo camera!!.LOL..no idea how to crop pics or anything like that.

 

What are posidrive screws????

[MrT]

If you are looking at my middle picture the silver screws to the left above and below are posidrive. To the right of the top screw you can see a lump on the plastic molding that looks like a black screw, the torx screws into this from the other side.

 

Posidrive screws are similar to and sometimes called crosshead or Philips screws as opposed to slot head screws.

[Guest HairyPlateEater]

Mine is quite different to those pictures.

 

Petrol and diesel are ... as are Mk1 & Mk2 IIRC

[seatkid]

Below is pic of my Mk1 MAF (90bhp AHU diesel, 1998)

 

And there I was thinking surely they dont have different airboxes for other engines! :lol:

[mumof4]

Ok..the screws or whatever they are were tightened up by a garage..now...they have worked loose again.i cant understand this.they tighten up.but over a couple of weeks they work loose..there is a noticeable drag on the car when accelerating from second to third..more than usual.I can only put this down to the MAF.when you get into third, there is a lag.then slow to accelerate.once going though, she seems ok.

 

 

Wether this is related or not i dont know but my parking sensors packed up this morn ..then started working again late this aft.

 

also, my HU when i switch the ignition on does not play right..i mean almost like its being switched on and off.i switch it off then on again then it is fine.

 

Now..not sure if all these are related..(prob not)..but im thinking i have an electrical fault somewhere?

 

she pulls up hills ok so i know the maf isnt totally knackered...but the drag is very noticeable at slow speed..yes i know you get turbo lag..but this is very pronounced.

 

I have checked fuses already....all are fine so i know there isnt a blown flown..there is no clicking from the relays...

 

Help very much appreciated please.

Marian.

[mumof4]

Ok..the screw is def cross threaded...now i had an idea to drill down the hole where it goes to make the hole slightly wider to put a bigger one in.

 

But..another idea is cable ties but how best to fit them..i did think drilling down the hole to make a small hole thru to the end and put the cable tie thru there,

 

but another way is to just cable tie it all over.

 

i did think about wrapping insulation tape around the gap but i dont think that will hold....

 

so will go with cable ties..

 

but i could always put a bigger screw down it with lazier threads...hmmmm

 

will let you know how i get on.

 

maz.

[anadin]

Ok..the screw is def cross threaded...now i had an idea to drill down the hole where it goes to make the hole slightly wider to put a bigger one in.

 

But..another idea is cable ties but how best to fit them..i did think drilling down the hole to make a small hole thru to the end and put the cable tie thru there,

 

but another way is to just cable tie it all over.

 

i did think about wrapping insulation tape around the gap but i dont think that will hold....

 

so will go with cable ties..

 

but i could always put a bigger screw down it with lazier threads...hmmmm

 

will let you know how i get on.

 

maz.

 

you women always want bigger!! how about thinner longer bolts with a nylock nuts, my wife swears by them :rolleyes:

[Guest neil_wiles]

cable ties like this Maz

 

 

 

 

[mumof4]

Ok..thanks Neil...will do that.

 

just cable ties to get .. :D :lol:

[mumof4]

.All done..just got to tidy up the ties.Only a very slight gap now, but the drag has gone..the oomph is back at low speed now.Chuffed with myself.

[anadin]

job in the town :(