[djmix]

hello
i have a vw golf iv 1.9 tdi 110hp 2000. the code of the engine is AHF. i recently changed my turbo and the car was working for one month without any problems. one day before i came to England where i am studying i ran the car on the motorway and suddenly the engine didn't let me go faster. after i went home normally but the turbo boost was showing little pressure like 0.2 and after i press the gas, the turbo boost is less than zero, not on zero like before, so does this mean i have more vacuum in the engine?. the next day i went for a drive and the turbo was working properly for 2 minutes and after again it went low. i am not getting white smoke behind. i want to know what might be the problem? could it be the MAF sensor on the air filter not giving enough air, or the vane actuator? please let me know what the problem could be and how to solve it. my clutch also has to be replaced as it is deteriorating, could this be linked to the low power in my turbo in any way? FYI: i also had a needle lift sensor error which i solved.
thank you for your help!

 

[djmix]

yes the rpm is increasing normally but my problem is that i cant feel the power of the turbo. the needle of the turbo boost is going up to 0.3 instead if 1.5 that it used to be. also i have a blow off valve on the turbo that used to work pretty loud but now even if am increasing the rpm to the max i cant hear the blow off as loud. i thing i am losing pressure from the turbo. could it be the maf sensor not working properly? i also have a problem with my clutch , i am hearing strange noises while the car is working but as soon as i press the clutch the noises stops so i know i have to change that also but could this effecting my turbo pressure as the clutch deteriorates? or its just a leak on the turbo?
thank you

 

[djmix]

whilst the engine is running, but the car is not moving, i can hear knocking sounds in my engine. however when i press the clutch the sound goes away. also, whilst im moving, i cant hear the sound too. could the clutch be causing the pressure problems? if so, how? thank you