check fuel filter..Hey guys I know I should be posting about a vw diesel but maybe you guys can still help. My car in Europe in a 96' Mercedes E290 turbo diesel and it occasionally won't rev over 3k rpm's. In 4th and 5th gear there is no chance so I am limited to 150 km/h. In 3rd gear I can rev over 3k but eventually (pretty quickly) I will be reving say at 3700 rpms and something will "click" and my car will lose power even with my foot on the gas and the revs will slowly drop to 3000 rpm. In 1st and 2nd I don't usually see the 3k rev problem (unless of course it already happened in the higher gears, then it will do it until I shut the car off and restart it).
Have you guys heard of this problem in any tdi's or diesels, or might have an idea of what's causing this?
Thanks for the help
edit: also good to mention that when the rev problem starts, it won't even rev above 3000 in neutral. Also there is no smoke or anything, drives fine just less power and higher fuel consumption at higher speeds due to having to keep the pedal to the floor just to get somewhere.