I got up 7am this morning, take out relay and test the current resistance, it flow OK and it works so it can't be the relay, I took glow plugs out again and test see all glow orange is work same time heated up. Still flash light,
so I though try to call my best mate who have high qualification electrical on motor vehicle and I pay him £20 to find out what is wrong.
I am surprise he could not find anything wrong with this car! :doh:
he said is mystery because all pre-heated system is in good condition and work fine start up in cold & running nice smooth.
He said there is only two option for free is remove coil led on speedometer or try to call
http://www.celtictuning.co.uk/ may cost over hundred pounds to access ECU switch off or delete data.
There is nothing more I can do, one more question if all glow plugs made in different company do this effect different resistance performance to confuse the ECU?
plugs that I have put in is Bosch it said to glow up fast than other cheap glow plugs not sure if effect it?
Is that possible something do with battery? the battery is small low amps they do sell more amps big battery would this help?
I see lot of other car with same engine same problem on SAAB, Vauxhall and Alfa said common problem on early Fiat 1.9 8v
https://www.vectra-c.com/forum/show...-p0380-how-do-you-find-faults-in-glow-circuit
https://www.vectra-c.com/forum/showthread.php?124582-P0380-fault-code
http://www.saabscene.com/forum/threads/147002-P0380-Glow-Plug-Heater-Circuit-quot-A-quot-Malfunction