Clueless

Tom Whetton

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Right so I’ve got a S3 8P 2010 about 83k, it’s been happening a while on and off, sometimes happens for a week straight and then sometimes won’t happen for months, when my car is cold and I set off driving it judders as in almost cuts out usually I take my foot off the accelerator and it cures it can carry on as normal so the other day I kept my foot on, no high revs not even going over 15mph it started juddering like mad as if it was gonna cut out next thing the epc and eml light come on, foot off the accelerator and they go off and the car drives as normal, anyone shed any kind of light on this? I’m thinking maybe accelerator pedal sensor? I don’t even no anymore haha
 
Get it scanned to see what caused the EML to flash on. it will save you time and money in the long run.
 
Do the cheap things first, scan if you have vagcom but if not spray your MAF sensor with an alcohol cleaner and put back also check your diverter valve also how dirty is your air filter ? that'd be my first port of calls
 
Scanned it, been into a garage for 3 days and nothing came up, air filter is roughly 6 months old so relatively clean, I’ll try the maf thing, anything you recommend to use?
 
They were trying to get a code up, they took it out a few times and couldn’t get it to do it typical, I pick it up from the garage and boom it does it on the way home ahhaa Didn’t do it this morning which baffles me so much cause it was well bad yesterday
 
If the EML light came on there will definitely be an error code logged. Are they are VAG specialist? Are they using a decent VAG code reader like VCDS? If not they might not be able to read all the cars ecu modules.
 
Yeah they’re a vag specialist, tbh this is the first time the eml light has come on, I’ve got a little obd Reader so I’ll plug it in see if it says anything but I won’t erase the codes
 
Could be a boost leak? Maybe try get someone to rev it a bit while you look under the car or in the bonnet for an air leak? Should be easy enough to hear where it’s coming from if it is that