avants2turbo
Registered User
my sister popped over earlier with her ailing A3 pd170
seems shes been having issues with it recently, sometimes with wont rev beyond 3000 even at a standstill, and then it will, but I drove it, and it totally gutless, wont rev with load, flags uphill, even changing down several gears.
we had cleaned the vanes on the turbo months ago with the old oven cleaner trick, and the actuator was working perfectly.
plugged it into vcds today, no codes (engine related) there is a code flashes up, says edc fault (i think) and the traction control light is on also
removed the egr, anti shudder valve and the inlet manifold, cleaned them all thoroughly, the swirl flap on the manifold was a bit gummed up, but cleaned it and it all moves freely
i tried unplugging the maf sensor, no different, the front boost hose that feeds the anti shudder valve/egr valve etc there was a lot of oil around it, removed it and the seal is blown, the o ring is loose, so cleaned it all up, replaced the seal, no different, this got me thinking, so started the car with the boost hose disconnected and got my sister to rev it, there is boost being produced, is there any chance the cat is blocked? if its producing boost, but it cant going anywhere?
the other thing, when we went to restart it after removing the inlet, egr etc it refused to start, turned over and over, and then the engine note changed, sounded like a car with no compression trying to start?
seems shes been having issues with it recently, sometimes with wont rev beyond 3000 even at a standstill, and then it will, but I drove it, and it totally gutless, wont rev with load, flags uphill, even changing down several gears.
we had cleaned the vanes on the turbo months ago with the old oven cleaner trick, and the actuator was working perfectly.
plugged it into vcds today, no codes (engine related) there is a code flashes up, says edc fault (i think) and the traction control light is on also
removed the egr, anti shudder valve and the inlet manifold, cleaned them all thoroughly, the swirl flap on the manifold was a bit gummed up, but cleaned it and it all moves freely
i tried unplugging the maf sensor, no different, the front boost hose that feeds the anti shudder valve/egr valve etc there was a lot of oil around it, removed it and the seal is blown, the o ring is loose, so cleaned it all up, replaced the seal, no different, this got me thinking, so started the car with the boost hose disconnected and got my sister to rev it, there is boost being produced, is there any chance the cat is blocked? if its producing boost, but it cant going anywhere?
the other thing, when we went to restart it after removing the inlet, egr etc it refused to start, turned over and over, and then the engine note changed, sounded like a car with no compression trying to start?