GolfGTIforum.co.uk
Model specific boards => Golf mk3 => Topic started by: KIN9DUB on 30 May 2012, 14:50
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on the air filter theres a little box and a part where some sort of sensor or plug plugs into the filter, well when mines plugged in the car peforms so sh!t its unreal, as in you put your foot to the floor and its splutters and juders, then suddenly it goes back to normal and shoots off, after about five seconds, also its doesnt tick over normal either, sounds funny idling and when not even accelerating. when you unplu this plug the car runs fine, but im concerned because its obviously mant to be plugged in not left out. the bloke said it started judering and he took it to a mechanic and they unplugged that. i aint got a clue what it is. any ideas??
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Sounds like MAF to me
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Probs sound like an idiot but what's that?
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Yeah Thats The MAF Sensor. (Mass Air Flow)
It tels the ECU how much air is entering the Engine so that the amount of fuel injected can be monitored so that it does not run too rich or lean.
Give the plug a clean, see if it was just crap on the contacts.
Could also take of the air box and have a look inside as there might be crap on the sensor itself.
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i've taken the air box off, looked at the filter etc, its all new and clean, also the plug looks clean and i unscrewed the little box n the two prong things that look like the inside of a light bulb if you know what im on about, there clean too. so why is it running ok with it unplugged? if you have any idea.. :embarassed:
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If it runs ok with it unplugged the maf sensor is knackered.
Do not get one from ebay, stick with genuine or Bosch
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ok, i took the sensor apart n it didn't look knackered, but like i said i don't really know much about it all.. but yeah, i have to leave it unplugged, if not its all over the place constantly, but runs fine when unplugged, so wheree do you suggest i get one of these sensors from if not ebay? as in best price etc,
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ok, i took the sensor apart n it didn't look knackered, but like i said i don't really know much about it all.. but yeah, i have to leave it unplugged, if not its all over the place constantly, but runs fine when unplugged, so wheree do you suggest i get one of these sensors from if not ebay? as in best price etc,
Try euro car parts or your local bosch agent.
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They are fairly expensive so ECP with forum discount is your best bet!
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ok, cool. but you're pretty certain it'll be that if it's running fine without it pluggeed in, i know it can't be the air filter or whatever as ive taken it all apart n checked it.. what about the plugs, like a connection or something?
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Could also have a split pipe after the sensor. So the car is taken in more air than what it's reading, making run sh!te.
Check all your pipe are fine and if the are it's the MAF sensor :smiley:
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so around how much are these maf sensors? if you have any idea, as i've been advised not to buy off of ebay i'm just wondering how much it'll set me back if that is the problem? yeah i'll check all the other bits..
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Have you not bothered to google ECP website yet and found out yourself? :rolleyes:
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yeah, also just been to the garage. around 200 odd pound..
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Well if it is running better with it disconnected then it has failed, see if you have a Bosch agent nearby, they do factory recon units which could be cheaper.
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are they not exchange units like the mk4 items?? i only paid about £87 for the mk4 one.... an they had my old one
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i've bought some cleaner, so i've taken it out n sprayed it etc, just waiting for it to dry and put it back in, hopefully that'll do the trick, if not its going to have to be a new sensor.. :sad:
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Just replaced mine 5 minutes ago lol. got one from a scrappy on the off chance. seems fine so far. intend to use this as a temporary measure until i can afford the new one!
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Cheap as chips down the scrappy, probably get the whole airbox, pipe and sensor for under 50 notes
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Just put mine back in etc and its made no difference after cleaning spray. looks like i'm going down the scrappy too.. how much did it set u back mate?
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My Anni's MAF was f**ked a few months back. Unplugged the sensor and it worked as it should, but obviously you should leave it unplugged. I bought a brand new one which in the end was just over £100 direct from VW.
Car runs sweet now, no more retarded juttering which make you feel sick!
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its the air temp sensor
the maf is its own piece ,not in the airbox