I have a problem with my vectra TD.
From cold things are ok
Once up to temperature driving normally is fine.
If you have to stop for a light the engine light comes on and power is severly reduced.
This could be very interesting at a junction or roundabout.
The car is underpowered for maybe 15 20 seconds then seems to normalise.
If the car is left to cool down for a bit then the problem dissapears again until the temp comes up.
Gave the car a service recently this didn't help.
Any ideas?
Frank