Last week I was asked to look at a Range Rover Sport TDV6 Diesel.
The owner contacted me and wanted a diagnostic check as he thought that he had a gearbox fault.
I used my Autologic box to query the faults on the gearbox. The only fault logged was a can bus missed message.
This was not serious enough to cause a problem. I asked the owner for a little more information.
He thought that the problem was the gearbox as the car was reluctant to set off.
After a test drive I could see his point. Uphill with the throttle planted in drive it would move at a snails pace until the engine revs had built up to 2000.
The engine management fault stored was exhaust gas re-circualtion (EGR) related and would not clear for long.
As the EGR system can be problematic on these engines the car was booked in at the referring garage for the EGR system to be checked.
Will post an update when this work has been done
Update
The EGR valves have now been fitted and the problem is cured. Although only one valve was reported as faulty by the engine management system it was aparrent that both were faulty. It makes sense if one valve had clogged up then the other should be in a similar condition.
I have also been informed that the valves can be modified by the insertion of a washer to reduce the exhaust gas flow. This has not been proved by myself so I cannot verify this.
