HELP astra j 1.7 cutting out

[stigeye]

If your egr was stuck open you would usually see excessive amounts of smoke from the exhaust, this usually leads to dpf full messages on the display as excessive amounts of soot is deposited into the dpf. I'm not even sure that a egr valve that is stuck open would cause the engine to cut out without getting dpf messages first. I would have thought that for the engine to stop or lose power intermittently there is either an airflow or fuel pressure issue, that is just a guess though.

I would take the car to a reputable garage with the right diagnostic equipment, as breakdown company's kit is usually too generic.