Australian Car Repair Issues? Ask an Auto Mechanic for Answers ASAP
Sounds like the typical faulty ECM syndrome of TS Astra.
I have replaced many in my time with Holden.
Can we get some TECH2 diagnosis done of the car, or Supercheap can do a scan on the engine for you for $14?
They are all important to look at.
The engine speed signal error will cause instant cutout.
The coolant temp will also give low power, hard starting etc.
TS has wiring harness issues, so some thorough diagnosis is required.
Some purge valves become a bit louder than normal.
Just be wary that your codes here could be wiring faults, not necessarily component faults.
TECH2 for diagnosis helps here.
Example, coolant temp should read same as air temp when engine cold, sensor disconnected should read -40c, then shorted should read 130c.
A harness with a short in it will already read incorrect in data. Disconnecting the sensor, the data will still read the same and not -40c.
I think you will find the U codes, plus the usual ECM failure like I have mentioned will be the cause.
The U codes of no communication are just as important.
Do you have 2 yellow lights or only one when the no start occurs?
My recommendation to you is let a GOOD EXPERIENCED Holden Tech diagnose your car.
Most of the time, it is not worth mucking around with cheap shops.