just picked up an astra van 1.7dti on y plate. took it for a test drive all fine and spot on. on the 170mile journey home i took it to around 80mph and the elittle light with the spanner came on and lost alot of power. pulled into services turned it off and on again it was fine. back on the motorway took it to 75 light and loss of power again.
Anyone got an idea of what could have caused it/ cheers.