I recently bought a Mk4 1999 Golf Gt Tdi and for some reason the car was not accelarating very well. The acceleration was quite poor, nothing what I would expect from a 110 bhp car (wouldnt rev past 3,000/3500 rpm). On the motor way it struggled to get to 80mph and couldnt go further.
I got a diagnostic check and was told there was a problem with: 17957 Boost pressure control valve P1549
The mechanic cleaned the sensor and drove the car whilst it was jacked up on the ramp and it revved up to 120 mph. However driving home it had the same problem of not picking up speed as it should and not going past 80mph (unless down hill, however it slows down when going up hill)
I have had the brakes checked from 'formula one' incase they were sticking but the mechanic said they were fine... I am very confused as I dont know what the problem could be nor do the mechanics and nor does the computer (diagnostics check). CAN SOMEONE HELP PLEASE?????
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