Wife phoned on her way home from work saying there was a big pop and loss of power on her 52 plate a4 1.9 TDI on 135k. Went to the rescue and sounded like the turbo was making a grinding noise. I'm assuming the bearings have gone so going to remove it and inspect tonight. Disconnected the vacuum pipe to the actuator just so we could drive a short distance home, not ideal i know but it was undriveable, kangarooing above 10mph!
Hoping for some advice on what are common causes. Looks like most people replace the oil feed pipe and clean the return pipe. One advert for a new turbo specifies the oil pick up pipe in the sump should be replaced. I know its common to block on the 1.8T but anyone experience of this blocking on 1.9 TDI's? Looks like a pig to get the sump off the a4 so dont really want to do this unless i have to.
In terms of replacement units I'm tempted to buy a new cartridge all balanced and ready to bolt on the outer parts of the old turbo. Anyone any experience? This would be around £110 versus £250 for a recon unit. Audi would like £943 for a new unit.
Any other tips and advice would be greatly appreciated.