Guest WOZZA Posted March 1, 2005 Report Posted March 1, 2005 i have had a power loss problem for a few months now, before i disconected the maf sensor the engine only gave half the revs. when i disconected it a difference in power was evident. Today i removed the maf sensor and cleaned the thing out using a cotton bud nothing else on the two wires, a lot of dirt came off. Then used a blow down gun, proceeded to blow out the dirt from inside the housing. when i reconected it, it gave me half the revs again but after reving the tits off it it gave me the other half of the revs. i took on the local highway to try it out it still does not give the performance that it did when i first bought it (two years ago)! and when i turn it off it gives the same half revs every time?????? can anyone help???is it the maf or not? or could it be something else? i used to own a sierra cosworth before the galaxy so i never ever thought of it as 'fast' but it did seem to 'pull on' between 2000 and 3000 revs significantly faster than today, again when the maf is disconected it is faster... what could it be? help! Quote
GSMGuy Posted March 1, 2005 Report Posted March 1, 2005 Wozza, if it's faster with it disconnected, then it's knackered m8.. Mike Quote
Guest WOZZA Posted March 1, 2005 Report Posted March 1, 2005 :( thanks gsmguy, thats all i wanted to know! when i buy a new one will it return to its original performance? zippy? Quote
seatkid Posted March 1, 2005 Report Posted March 1, 2005 Yes. Make sure you give engine number as several MAF variants exist..Shop around for best price, different dealers, different prices. A lot do service exchange for under Quote
Guest WOZZA Posted March 1, 2005 Report Posted March 1, 2005 CHEER'S PEOPLE! thanks for the advice i'll keep you posted!!!! Quote
Danny Boy Posted March 6, 2005 Report Posted March 6, 2005 My MAFS playing up....how easy are they top change/where are they? :( Any pics would be great please? :) :D Quote
Masked Marauder Posted March 6, 2005 Report Posted March 6, 2005 It is the first thing on the pipe after the air-filter box top, it has a multi-plug plugged in, you can't miss it. Quote
seatkid Posted March 7, 2005 Report Posted March 7, 2005 Mass Air Flow Sensor pictures... This is what it looks like on my Tdi...http://img88.exs.cx/img88/518/maf12np.jpg Step 1. Squeeze the clip on the plug and pull....http://img226.exs.cx/img226/3694/maf20yl.jpg Step 2. Unfortunately I havent got a photo of me using a pair of pliers to open the rear clip to detach the pipe at the rear of the sensor, but I hope you get the idea.... ....missing photo!....... Step 3. Use an allen key to remove the two bolts at the front...http://img195.exs.cx/img195/1313/maf38ba.jpg Step 4. Pull the Maf away from the air filter box...http://img185.exs.cx/img185/3827/maf44xm.jpg Quote
Dave-G Posted March 7, 2005 Report Posted March 7, 2005 :) Seatkid, You'll never make it as a mechanic with fingernails like that :( Wozza:I'd like to disect one...can I have yours? Cant help with the numbers mate Quote
Guest WOZZA Posted March 8, 2005 Report Posted March 8, 2005 :D I got a maf sensor from ebay, & when i fitted it i discovered a hole that had became worn into the EGR vacum pipe! what a f*****g daft tw*t, i am eh?never mind, a new maf sensor and fixed pipe and it goes like the clappers!ho hum! theres a sensor for sale if any one wants to buy it! :D i had never removed the engine cover untill today, and i realised what a mistake i have made! a lesson to all eh? Quote
Danny Boy Posted March 8, 2005 Report Posted March 8, 2005 thats great thanks for those pics, i'll have a look round for a cheap one now. :D :o :D :D Quote
tonyg Posted June 9, 2005 Report Posted June 9, 2005 The power has been rubbish on my 1999 110 Tdi recently so reading up on things here I decided it sounds like it must need a new MAF. GSF had new ones only Quote
jkspoff Posted June 9, 2005 Report Posted June 9, 2005 Excellent pictures, you could teach 'Haynes' a thing or two ! Quote
seatkid Posted June 9, 2005 Report Posted June 9, 2005 Trouble is today when I got my new MAF the other wire that comes out of the 5 pin plug with some sort of (temperature?) sensor on it is dangling in the air and I cant see where it is supposed to go. Doesnt seem to worry the Gal at the moment but I havent been far in her yet. Can anyone give me a hint? Don't worry, it doesnt go anywhere....there is a clip on the lh bulkhead but it might of dropped off. Quote
arnie70 Posted May 13, 2006 Report Posted May 13, 2006 By pulling the plug out as in step 1 photo, does this act as disconnecting the MAF to see if it is faulty? or would I need to do something else? Quote
arnie70 Posted May 13, 2006 Report Posted May 13, 2006 If I find that the MAF is faulty, would I be able to leave it unplugged till I get a replacement or would this cause more problems? :lol: Quote
mumof4 Posted May 13, 2006 Report Posted May 13, 2006 yes you can..you need to protect the gold thingies on the plug though so they dont get covered in muck.Ours was disconnected 4 months till we remembered to get a new one! :lol: Quote
arnie70 Posted May 13, 2006 Report Posted May 13, 2006 yes you can..you need to protect the gold thingies on the plug though so they dont get covered in muck.Ours was disconnected 4 months till we remembered to get a new one! :lol: Thanks for that!! Quote
mumof4 Posted May 13, 2006 Report Posted May 13, 2006 No probs..i know all about MAFs...and wiper linkages...and umm.....how to overfill a car with oil and disconnect a battery!!oh...nope..thats it! :lol: Quote
arnie70 Posted May 16, 2006 Report Posted May 16, 2006 yes you can..you need to protect the gold thingies on the plug though so they dont get covered in muck.Ours was disconnected 4 months till we remembered to get a new one! :rolleyes: Have disconnected MAF and car is performing much better! You state that leaving it disconnected will not cause any problems, therefore is it worth spending the money to replace the MAF? will I get even better performance with a new MAF connected then running with faulty MAF disconnected? :rolleyes: Quote
Masked Marauder Posted May 16, 2006 Report Posted May 16, 2006 yes you can..you need to protect the gold thingies on the plug though so they dont get covered in muck.Ours was disconnected 4 months till we remembered to get a new one! :rolleyes: Have disconnected MAF and car is performing much better! You state that leaving it disconnected will not cause any problems, therefore is it worth spending the money to replace the MAF? will I get even better performance with a new MAF connected then running with faulty MAF disconnected? :rolleyes: In the short term it will be fine, but as MO4 found out, when you fit the new one you will wonder why you waited! Quote
mumof4 Posted May 16, 2006 Report Posted May 16, 2006 Yes it is worth spending the money!!!!!!!i got mine off ebay for 60 quid, Mm is right..the difference!!..she damn well flies now!!well worth it..get a new one. :rolleyes: Quote
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