I have an 2004 A4Q 6spd 1.8t, I have changed all four coil packs, service regularly, but still am having a problem with stuttering when under hard load and more than 3/4 throttle. Have no idea what could be causing this.
The air bag light comes on intermitently and then goes off, dont know why. any help would be greatly appreciated.

Thanks
Stephen

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Stephen Heppard

what shop have you been taking it to...

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2001 225 TT: Bilstein PSS9 Coilovers | Chicago Performance Tuning Adjustable Control Arms Stoptech Slotted Rotors | 3.2TT Rims | 3.2TT Rear Valence

also what coil pack did you change

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2001 225 TT: Bilstein PSS9 Coilovers | Chicago Performance Tuning Adjustable Control Arms Stoptech Slotted Rotors | 3.2TT Rims | 3.2TT Rear Valence

Any CELs? If so is it flashing? Get your codes read at autozone (free) then post them in the B6 area otherwise people are just guessing as to whats wrong and thats really not alot of help. Sounds like a misfire but can't be sure w/o codes.

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'01 1.8TQM::SpeedTuning ECU::Forge 007p::APR/VDO vent gauge::18"x7.5" Flik Wasps::15% tint::debadged
www.metrodubs.com

yea and if it is a misfire it could be one of the spark plugs that OEM had manufacturer flaw and got recalled

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2001 225 TT: Bilstein PSS9 Coilovers | Chicago Performance Tuning Adjustable Control Arms Stoptech Slotted Rotors | 3.2TT Rims | 3.2TT Rear Valence

sorry its been awhile to get back, I've changed all the coil packs, bought them at Autosport Werks. Changed all the plugs. The code was for the small emission leak, the valve on the passenger side of the engine, changed that. The next thing is a Timing belt change, I guess I'll do it myself. Many years working on cars just never on one of these, if it was domestic I could tell you.