Maf repair(so what's the trick then)

mondo said:

Hello willo!

Looks to me like Bosch (botch) are looking for a get out clause because they are having to replace so many under warranty, especially when you consider the amount of vehicles that use them
As for loosing 10-30% performance Lets face it ,they aint that accurate or reliable in the first place
And finally What the hell is there to calibrate on them????
If we can set about them with some brake cleaner and a toothbrush to improve there performance, then I think someones telling talking out of there bottom with reguard to the factory calibrated precision instrument bit

If you still have problems obtaining the right key for the maf screws send me a PM and I'll send you some over, or try http://rswww.com

They do propper cleaning stuff aswell

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Hi mondo,

While that guy was telling me all that, the question that came on my mind was what could be calibrated to an item that only has a wire inside that needs to be heated up to a certain temperature and which is, at the same time cooled down by the passing air, on the hand of the amount of power needed to keep the temperature as close as possible to the pre-set value the ecu calculates the amount of fuel the engine requests/needs. There are no moving things or whatsoever in it, also on the maf I think there is a small edge and in the housing a groove, so what can go wrong ? Of course I was not going to argue with the guy while he was explaining it all to me, I almost had the feeling I did a sacrilege seen the way he jumped onto me. As for the RSWWW, as far as I can see it's all T6 (6 pointed star) they have. I have two sets of such 6 pointed keys, one with a hole in and the other without a hole. When I take off the airfilter cover I'll try to use pliers or so and when screws are out try to saw a groove in it so that, if again needed in future, (ming does clean his' yearly..) I can use a flat screwdriver. Take care.

Go ahead and clean it sir

The pierburg maf is avaliable without the housing
and there is no adjustment on it

so it follows the bosch one is the same
it is held in with 2 self tappers !

i have sprayed mine 2 times with a lot of carb cleaner
and it has helped a little

regards richtd4es

What in the name of hell is a MAF.

I do know what a milf is though..............

It's short for Mass Airflow Sensor, it converts the amount of air drawn into the engine into a voltage signal, the ECU needs to know the air volume to calculate engine load, this is to work out how much fuel is needed.

not quite the same as a milf!!!

sharky999 said:

What in the name of hell is a MAF.

I do know what a milf is though..............

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Yes sharky! I prefer the second option, much more intresting

the first bits boring, In simple terms (cos thats wot i is)Its a thingy that measures the air (temp and volume) going through yer air filter, this then sends a signal to yer puter so that the right amount of fuel can be squirted through yer injectors to make yer motor go more nicer

Hey Mondo, you been on Bob's stuff again? Isn't that what I just posted?

Jerry said:

Hey Mondo, you been on Bob's stuff again? Isn't that what I just posted?

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Erm No! for a change!
I wer just a bit slow I was typin while you was postin

your was much more professional though

Jerry said:

Hey Mondo, you been on Bob's stuff again? Isn't that what I just posted?

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And I in post 21 ??

Hi guys,

First time post so do excuse me if I nob it up some. ;-)

I had the issue which was listed somewhere on this forum of the MAF dying. I had a look and the contacts were clean and dust free...so went to option 2 which was that the MAF was duffed up.

To test it I disconnected the MAF entirely which puts my 00 TD4 on to 'default' setting. Gotta say that my power was improved back to where it was when new...Although the engine sounded a little 'rougher' than usual. Anyway, ran with that for a week to check the fuel econ. (which was naff without the MAF) and bought the one from RoverRon on eBay for £50. Just fitted it without problems and am pleased. Engine sounds smooth (as much as a TD4 does) again.

Thanks to you guys in this forum for the tips tho...I was going to sell the Landy as it was doing my nut.

Tim.

Hi tim
help me out here . Did you buy a Maf or a mafam?

from Rover ron

thanks
richtd4es

Richtd4es said:

Hi tim
help me uot here . Did you buy a Maf or a mafam?

from Rover ron

thanks
richtd4es

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Damn - you spotted my deliberate foul up.

You're right - it's a MAFAM i purchased. You unplug the real MAF and plug this MAFAM in between the two (kind of like a middle man that does something useful). ;-)

Tim.

Tim

Thanks, So what's it go like then

It's ment to give results low down

but how good is it sir?

richtd4es

Richtd4es said:

Tim

Thanks, So what's it go like then

It's ment to give results low down

but how good is it sir?

richtd4es

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I've got to say that it's ok...I wasn't expecting a massive difference - just wanted my decent fuel econ. back.

I haven't given it a good run yet - just around the block with those pesky kids trying to test my insurance out. I'm giving it a 250 mile run tomorrow and i've got it on the 'middle' setting. I'll play around on the return journey and 'up' the setting.

Gotta say tho - it's certainly made the engine smoother. Which can't be a bad thing. My reason for fitting was 'cos my 'proper' MAF was Donald Ducked and I was running without one.

I'll have a run tomorrow and post the results for you. ;-)

Tim

Thanks Tim

Look forward to your next post

richtd4es

Yer maffam bit wont fix a shagged maf sensor!!!!!!??? as far as I'm aware???
What it dose do, Is allows you to fit the cheaper pierburg sensor instead of the crap Bosch one that costs a fortune

mondo said:

Yer maffam bit wont fix a shagged maf sensor!!!!!!??? as far as I'm aware???
What it dose do, Is allows you to fit the cheaper pierburg sensor instead of the crap Bosch one that costs a fortune

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Hmmm. Am I confused or what! I had a problem with major power loss while attempting to accelerate. I unplugged the MAF from near the air filter (had to take the air filter cover off). That resolved my power loss for sure but was not recommended as a long-term solution.

So, I found this MAF booster / MAFAM from http://stores.ebay.co.uk/ROVERRON-PRODUCTS which has certainly made the engine smoother. Did I need this? Have I got something I don't need?

Not too fussed as it's made the car sound and feel slightly better, but if it's not required, then it's worth others learning from my mistake!

Tim

Yep thats the bit you need!!
If your mafs not very good....what it dose is improves and refines yer signal from it !!(throgh lectrickery)

So if it dont improve yer motor chuck a pierburgh sensor at it....
If yer puter senses no signal from yer maf It uses a default value to chuck diesel into yer motor
ie, It runs better...

mondo said:

Yer maffam bit wont fix a shagged maf sensor!!!!!!??? as far as I'm aware???
What it dose do, Is allows you to fit the cheaper pierburg sensor instead of the crap Bosch one that costs a fortune

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Hi mondo,

As far as I understand the mafam fixes or improves a 'shagged' Bosch maf, if you want to put a Pierburg instead you need to have a mafam75p (that has an external temperature sensor as the Pierburg does not measure temperature and the ecu needs that parameter, the Bosch maf does do that). Bottomline is that for a Bosch maf a mafam is ok, for a Pierburg maf a mafam75p is needed. (I think).

I stand corrected!...maffam 75p Thank you willo!!!
Toooooo much vino...!!!

dont think it will fix a bust one though????

Yep you've done the correct thing, the maf measure ya air input temp to your turbo ,so without gettin all techy on ya at a certain rpm ya have a split vane turbo and ya want this ta kick in at correct temp hence the maf,the bosh mafs are ****e and either go open circuit [kaput] or go outa speck this can happen after 30k miles or never, phew, , , so if it go's outa speck [poor performance] rover Ron's gismo is the dogs at kicking the bastard ta behave, , , but if ya want to change to a different make [the pirbough] then as the WILLO SAYS A DIFFERENT TYPE OF ROVER RON GISMO as the two makes are not an exact match ,so the upturn is you've done the correct thing, so be happy and best oh luck. . .