Car Wont Rev Over 1700

[csj]

hello my 99 tdi gal wont rev over 1700 revs on full foot down , ticks over normal revs to 1700 then drops back to 1500 but thats it . cleaned throttle sensor . but still no joy , help please

[AMacdonald]

I had something vaguely similar on my Alhambra. Fine up to 1800 revs then sudden power loss down to about 1500 or so. After a few repeats it generally got past and ran fine after that. I believe I eventually tracked it down to a corroded connector on the needle lift sensor, or at least after things got a lot worse I finally tracked it down and the power loss hasn't come back.