Hey everyone,
Have had this Audi A3 for around 6 months now and it is driving me nuts.
It's an '02 Audi A3 1.9 TDI ASZ, with 180k on the clock, the turbo has been recond.
Around a month after buying the car there was noticeable hesitation when accelerating, very minor but still there. The car would have a very slight judder\knock to it when idling, found the std airbox had a massive crack in it so that was replaced with an old (clean) pipercross I had handy. Issue disappeared.
The past of the car was a mystery so it was serviced (by myself) despite being told it had been done a couple months before purchase.
Recently the power of the car has been very poor, it has gone into limp mode several times. It has a lot of hesitation and almost a misfire type judder when trying to accelerate in 4th, 5th and 6th, happens rarely in 1st, 2nd and 3rd. There is a very large amount of black smoke when accelerating.
For example, casual driving at 20 - 50 mph with smooth acceleration is reasonably smooth, every once in a while there's a slight shake but nothing close to when motorway driving at 60 - 70 in high gears or hard acceleration as it is almost a constant judder\shake and then every so often limp mode kicks in.
I've cleaned the MAF and checked the N75 and they both appear fine, checked all fuses, checked fuel lines & injectors, disconnected and reconnected every sensor, solenoid etc I could to ensure it wasnt a loose connection, checked most of the intake piping (haven't had time recently to get under it and have a good dig), tightened every hose clamp I could, check the turbo actuator and it moves and feels fine!
Any input would be greatly appreciated! Willing to try just about anything at the moment!!
Cheers!
Have had this Audi A3 for around 6 months now and it is driving me nuts.
It's an '02 Audi A3 1.9 TDI ASZ, with 180k on the clock, the turbo has been recond.
Around a month after buying the car there was noticeable hesitation when accelerating, very minor but still there. The car would have a very slight judder\knock to it when idling, found the std airbox had a massive crack in it so that was replaced with an old (clean) pipercross I had handy. Issue disappeared.
The past of the car was a mystery so it was serviced (by myself) despite being told it had been done a couple months before purchase.
Recently the power of the car has been very poor, it has gone into limp mode several times. It has a lot of hesitation and almost a misfire type judder when trying to accelerate in 4th, 5th and 6th, happens rarely in 1st, 2nd and 3rd. There is a very large amount of black smoke when accelerating.
For example, casual driving at 20 - 50 mph with smooth acceleration is reasonably smooth, every once in a while there's a slight shake but nothing close to when motorway driving at 60 - 70 in high gears or hard acceleration as it is almost a constant judder\shake and then every so often limp mode kicks in.
I've cleaned the MAF and checked the N75 and they both appear fine, checked all fuses, checked fuel lines & injectors, disconnected and reconnected every sensor, solenoid etc I could to ensure it wasnt a loose connection, checked most of the intake piping (haven't had time recently to get under it and have a good dig), tightened every hose clamp I could, check the turbo actuator and it moves and feels fine!
Any input would be greatly appreciated! Willing to try just about anything at the moment!!
Cheers!
