2.5 diesel maf sensor aftermarket

This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
H

hagrid

Member
Posts
14
Location
kidlington
hi all has anyone fitted aftermarket sensors and if so are they anygood as i believe genuine new parts are like rocking horse s#*t thanks for any help
 
I needed a new one and spoke to about 6 main dealers / independents they all said the same thing "this part is no longer produced" have you tried looking on eBay for a working genuine one?

All the best.
 
found one one ebay but not sure if that one is any good but euro parts list a replacement for £105 and a warenty secondhand they wanted £45 plus postage
 
wammersi know you have probaley been asked this more times than you have had hot diners but could you please explain just once more what long term diferance it would make to leave disconected thanks again
 
hagrid said:
wammersi know you have probaley been asked this more times than you have had hot diners but could you please explain just once more what long term diferance it would make to leave disconected thanks again
Click to expand...

The MAF is there to control EGR it does nothing else. I am more interested as to why you think you need a new one. If this was a vital component they would still be available. As the petrol MAFs are.
 
Funny, on testing, disconnecting it worsens fuel consumption on mine and I get small amounts of smoke, also the IAT is in the MAF.
Try contacting Pierburg direct for an equivalent.
 
was runnning fine then a noticable drop of in power after reading various post tried disconecting maf and the power was returned was not sure what effect it would have long term so started looking for a replacement have also found same part number is also used for bmw and vauxhall omega if you go on ebay and search part number there are quite a few aftermarket suppliers selling them for other vehicles but all part numbers are the same
 
hagrid said:
was runnning fine then a noticable drop of in power after reading various post tried disconecting maf and the power was returned was not sure what effect it would have long term so started looking for a replacement have also found same part number is also used for bmw and vauxhall omega if you go on ebay and search part number there are quite a few aftermarket suppliers selling them for other vehicles but all part numbers are the same
Click to expand...
The ECU uses a defult MAP in the absence of the MAF so the car will run fine without it, mine uses more fuel in that situation.
 
Datatek said:
The ECU uses a defult MAP in the absence of the MAF so the car will run fine without it, mine uses more fuel in that situation.
Click to expand...

Nonsense the MAF is for EGR operation it does not effect fuelling. How many times are you going to spout this crap? It has been explained to you a couple of times. The Temp sensor in the MAF has nothing to do with fuelling and neither does the air flow reading.
 
wammers said:
Nonsense the MAF is for EGR operation it does not effect fuelling. How many times are you going to spout this crap? It has been explained to you a couple of times. The Temp sensor in the MAF has nothing to do with fuelling and neither does the air flow reading.
Click to expand...
You think what you like, I've proved it for myself and it's confirmed in the final update of RAVE. It's you that's spouting intransuigent crap.
 
Datatek said:
You think what you like, I've proved it for myself and it's confirmed in the final update of RAVE. It's you that's spouting intransuigent crap.
Click to expand...

You show a distinct lack of knowledge of how a Diesel works unfortunately. What you claim is not possible.
 
wammers said:
You show a distinct lack of knowledge of how a Diesel works unfortunately. What you claim is not possible.
Click to expand...
While you are ace on FIP mechanics, you seem to now the best part of feck all about electronics, how do you think the M57 uses the MAF, or the later Transit?
I've done enough checks to be pretty sure of my ground, you as usual just use bluster.
Technical manuals are often revised to correct errors but I have never know a tech manual revised to change from correct to incorrect. Early versions of 98/99MY RAVE say the MAF controls the EGR, no mention of fueling, the last revision states it controls the MAF and fueling. True it's not like a petrol and only trims the fueling rather than being the be all and end all like a petrol.
 
Datatek said:
While you are ace on FIP mechanics, you seem to now the best part of feck all about electronics, how do you think the M57 uses the MAF, or the later Transit?
I've done enough checks to be pretty sure of my ground, you as usual just use bluster.
Technical manuals are often revised to correct errors but I have never know a tech manual revised to change from correct to incorrect. Early versions of 98/99MY RAVE say the MAF controls the EGR, no mention of fueling, the last revision states it controls the MAF and fueling. True it's not like a petrol and only trims the fueling rather than being the be all and end all like a petrol.
Click to expand...

We are talking a M51 the EGR is to control the production of NOx that is it's purpose. I don't give a toss about the M57 or the common rail Transit. NOx control is a function of air supply NOT fuel supply. EGR controls air supply to reduce the production of NOx by reducing combustion temperature. It does NOT control fuel supply which is adjusted by the ECU subject to engine RPM. The temp sensor in the MAF tells the ECU the air temp flowing past the hot wire sensor. It must know this to work out the correct flow rate as colder or warmer air would give false readout. The IAT preset in the ECU is to ensure EGR operation under all conditions actual fuelling is extrapolated by the ECU from engine temp and fuel temp. You CANNOT trim fuel without changing the rquested engine speed it is not possible.
 
Last edited:
wammers said:
We are talking a M51 the EGR is to control the production of NOx that is it's purpose. I don't give a toss about the M57 or the common rail Transit. NOx control is a function of air supply NOT fuel supply. EGR controls air supply to reduce the production of NOx by reducing combustion temperature. It does NOT control fuel supply which is adjusted by the ECU subject to engine RPM. The temp sensor in the MAF tells the ECU the air temp flowing past the hot wire sensor. It must know this to work out the correct flow rate as colder or warmer air would give false readout. The IAT preset in the ECU is to ensure EGR operation under all conditions actual fuelling is extrapolated by the ECU from engine temp and fuel temp. You CANNOT trim fuel without changing the rquested engine speed it is not possible.
Click to expand...
Bollcocks:p Feck off back to your Sangria.
 
Its quite upsetting when Datatek and wammers disagree - like when you were a kid and yer mum and dad have a row; and you musn't interrupt of course, only the mother in law can do that - now where is SaintV8??:(:confused:
 
You must log in or register to reply here.

Similar threads

MrGorsky
P38A Rear hub assembly FTC3223 from Eurospares anyone tried them?
2
Replies
24
Views
3K
MrGorsky
MrGorsky
M
2003 Freelander TD4 Serengeti automatic.
Replies
0
Views
436
mudinuri
M
D90 Td5
Aftermarket Hubs
Replies
2
Views
131
tottot
tottot
S
Newbie urgent help supercharged 55 reg problems
Replies
2
Views
536
Grrrrrr
Grrrrrr
P
L322 Vogue 2006 4.4 V8 MAF/limp mode issues
Replies
9
Views
738
peterself
P
Back
Top