Hi, I have a vw caddy 1.9 tdi (ALH) that lacks power and I'm not getting any fault codes. It runs ok in first and second gear but lacks power to accelerate in higher gears and revs... Feels like I don't have a turbo... I can get it up to 130 kph but it takes time and in uphills it only does about 80 kph... But it runs good without problems in idle. I have checked the turbo vanes, they move freely. I have replaced all the vaccumhoses. I have replaced the MAF and airfilter. Even tried running it with filterbox open... I have replaced the the boost pressure valve N75 I have removed and cleaned the intakte manifold (wasn't cloged). I have replaced the egr vaccum valve/switch and plugged the egr recirculation. I replaced the fuel filter and checked the fuelflow from the tank. I replaced the ecu but then it didn't run for more than 2 seconds (guess that's the immobiliser) so that was a no go. And I put an electric fule pump before the original fuel pump. (No difference but it was a cheap one with only 0.4 bar pressure?) So I'm out of ideas... I'm starting to belive it's the pump or turbo but shouldn't that give codes?? If the injectors are clogged it shouldn't run smooth, right!? What symtoms does bad compression give? Anyone have any suggestions on what to try next?! Greatful for all thoughts on the matter!