My poor car was recently blown up ... well, it started coughing out loads of much and smoke and the turbo died. We've had the turbo reconditioned as an interim measure, to see if that really was the problem. On removing the turbo, a wire was noticed to be broken, which we have discovered leads to the inlet manifold soleniod valve.

The car still doesn't have the power it had before being blown up.

Does anyone know if this inlet manifold soleniod valve disconnection could cause this?

Any help would be greatly appreciated!

was the inlet manifold cleaned? intercooler drained of oil? EGR/antishudder assembly cleaned?

The only inlet manifold soleniod valve I can think of is part of the EGR assembly, so is that wasn't opening then no exhaust gasses would be circulated. My EGR is blanked off and I still see the same turbo performance, so I would look else where.

Are there any fault codes? Maybe a vacuum pipe wasn't connected back up after assembly?

There are three solenoids along the back of the engine. The solenoid to activate the turbo, the EGR solenoid and the flap solenoid that mouns to the inlet manifold, this is the one I think you are talking about. These quite often drop of their bracket and down onto the turbo causing the valve and/or wiring to melt.

All that solenoid does is operate the flap in the intake after the EGR, this has a two fold operation. It stops the engine running when you switch off the key (you will probably notice it will shudder a bit now when you turn it off) and also closes up to create a manifold depression and thus vacuum to draw the exhaust gas from the EGR valve (diesels don't have manifold vacuum naturally). Seeing as the flap defaults to an open position I can't see it effecting power to much but it needs to be sorted.