MAF sensor

reet..
got a 51plate td4 auto thats never really been right in the speed/accelleration dept...

just serviced it wi new fuel filter but still same so....

after a bit of searchin we found everything pointed to a duff maf.

unplugged maf socket and went for a drive.

MY OH FOOKIN MY DID IT SHIFT!!!!!!

so, bought a new pieberg maf from eurocar parts and fitted it last night.

went for a drive....

same as wi old one in!!!

has anyone fitted a new maf and had problems?

does it need settin up?

andytd4auto said:

reet..
got a 51plate td4 auto thats never really been right in the speed/accelleration dept...

just serviced it wi new fuel filter but still same so....

after a bit of searchin we found everything pointed to a duff maf.

unplugged maf socket and went for a drive.

MY OH FOOKIN MY DID IT SHIFT!!!!!!

so, bought a new pieberg maf from eurocar parts and fitted it last night.

went for a drive....

same as wi old one in!!!

has anyone fitted a new maf and had problems?

does it need settin up?

Click to expand...

I think you will find that you have to use the bosch Maf, unless you have Rover Rons box of tricks.

My understanding of a pieburg is they dont work right on a standard car (I could be wrong), you need a box o tricks from rover ron, give them a ring apparently they know what their talking about and I will certainly be talking to them when I return from my jollys Tuning-diesels for cheaper diesel tuning. heres the link if it works. if not just google roverron

just ordered a roverron gizmo so i'll keep you posted

without asking a dumb question, what is the downside of leaving the maf unplugged ?

Optimus Prime said:

without asking a dumb question, what is the downside of leaving the maf unplugged ?

Click to expand...

as far as i can see there's nowt wrong wi it been unplugged!

WHY CAN'T I LEAVE THE MAF UNPLUGGED?

Some owners have been advised that its okay to just leave the maf unplugged. This is not a good idea for the the following reasons:

a) Not only is there no air flow measurement, but no intake air temp sensing either so the ecu defaults to -5C. This results in over fuelling, especially in warm weather leading to poor fuel consumption and lump running.

b) The lack of air temp sensing means the timing is not optimum as the ecu uses the IAT to adjust the injection timing.

c) The ecu's overrun fuel cut off feature may be disabled, also making fuel consumption worse and engine braking worse.

d) Performance is worse: A higher revs on the L series - the engine won't rev past 4000rpm and on the 75/ZT/TD4 there is a stodgy, choked feel probably due to the overfuelling.


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Yes last fred wez correct. . .disconnect the maf as a get yer home or a test, if you leave it disconnected your not running efficiently, also the pierbourgh maff is not a compatible with the Bosch [so only with a Rover Ron's gismo]. . . . . .

thank you chaps, I will try it only as a test to see if it improves matters

update!!

got roverron's mf75p gizzmo!

plugged it in to the piebrgh maf sensor, set dial to position "1 o'clock"
as per instructions and.......................


FOOK ME!!!!!!!!!!!!

ITS LIKE A BRAND NEW CAR!

cant believe how bad the lack of power was

well worth the money

highly recomended mod for the TD4!

andytd4auto said:

update!!

got roverron's mf75p gizzmo!

plugged it in to the piebrgh maf sensor, set dial to position "1 o'clock"
as per instructions and.......................


FOOK ME!!!!!!!!!!!!

ITS LIKE A BRAND NEW CAR!

cant believe how bad the lack of power was

well worth the money

highly recomended mod for the TD4!

Click to expand...

we teld yer

Another tip for you Andy, is to fit an egr bypass if you haven't already. They're regularly sold on ebay & Ron has some info on his website about them.
Glad you got your MAF sorted, it sounds like yours was truly dead.

Thats my next mod . . . .ive had it blocked off for a long time ,but gonna take off the inlet manifold un clean it [bet its full er ****e] and fit a new by-pass fingy ,also gonna change my decompresion filter last done bout 45,000 on bout 95,000 . . . . .still running at around 40% vedge/converted to bio. . . . . . .

Thats my next mod . . . .ive had it blocked off for a long time ,but gonna take off the inlet manifold un clean it [bet its full er ****e] and fit a new by-pass fingy ,also gonna change my decompresion filter last done bout 45,000 on bout 95,000 . . . . .still running at around 40% vedge/converted to bio. . . . . . .

Click to expand...

I must admit i chickened out on removing the manifold, though I know it would benefit from a good clean out. I tend to be heavy handed & easily overtighten, or snap bolts or plastic items so I just cleaned what I could & left alone as the car is driving well now. Maybe in future though.

I thought you were going to say "now won't run 'cos one of the injectors has sucked up some crud from the now emtpy tank.

100 quid you say, was it 2nd hand, or is the price for a new un

Optimus Prime said:

I thought you were going to say "now won't run 'cos one of the injectors has sucked up some crud from the now emtpy tank.

100 quid you say, was it 2nd hand, or is the price for a new un

Click to expand...

35quid for pibergh maf from eurocar parts (inc bit of ex-staff discount!) and 57.50 for a mafam from roveron.

also had a new fuel filter and oil service last week.

really impressed with the change!

feels like a new car now

did fuel test by drivin till ewl light came on, put a gallon in and run it again till ewl came on again. 32.1mpg than filled it right up.

drove 20 miles fron wallasey to flint wi no problems just big smiles

seems the maf was on its way out when we bought it 18months ago

its gonna have a big test next weekend cos we of to dorset wi caravan