I see there are several similar issues around this forum but I don't really want to jump to conclusions before getting your insight.
Car: Vectra 120 CDTi Exclusiv 56 Plate.
Description of problem: Sunday 20th March we were out for a drive and I noticed that there was no power delivered through the Turbo rev range. In fact where the car would normally accelerate up a hill in 4th gear, it now requires 3rd. On occasion the dash light with a car+spanner was evident but cleared as soon as I changed down a gear.
The Turbo is audible at 1900 revs through to 2400 revs but there is no power associated with this, there is still the normal swirl of exhaust when the turbo is engaged. The acceleration only picks up at around 2300 revs through to 3000. Normally there would be distinctive acceleration as soon as the turbo kicks in at 1900 revs, enough to push you back into your seat.
Monday afternoon and we booked it into our local (independent) garage, where a diagnostic was performed and there was no logged code. All the garage could offer was to change the diesel filter and re-bleed the system. After the filter change there seems to be some improvement but the rev ranges I mention above are still evident.
Is there anything I can physically check before I ask a Vauxhall Dealer to take a look? I really want to avoid the usual 'check/change this & test' thing that usually results in loss of hair and empty wallet.
Other issues (may not be related): On cold start engine is lumpy on revs applied but after 5-10mins warmup this stops.
Barring this recent issue the car has been amazing, enjoyable and a pleasure to drive after ditching our Laguna with a continual fuel management fault.