Mystery Problem ? 2012 SV6 II Sportswagon

[Matto1964]

Hi All,
Okay we are at our whit's end! Owned the car 12 months and driven it about 2 months!!!!
Problems:
Loss of Acceleration
Engine Cutting off and wont restart
Multiple Error codes P0172, P0175, P228, P0113 just some
Stability control fault code

Have replaced so far:
BCM Unit $1200
MAF Sensor $360
Spark plugs $160

What's been done:
Sent to Holden Dealership - Connot finds any faults twice $220 for Sweet FA
Auto Electrician - Cannot find any faults $300 tested all wiring, apparently ECU, nothing on computer.
Dealer we bought it from - Not our problem don't want to know us any more.

Can anyone who have experienced the same problem advise on what they have done or if there is a decent holden dealer in the country who have fixed something similar,
as ours here in Darwin are f*^king useless money hungry pricks. Please let me know.

 

[Asmodai78]

V6 or V8? have you checked the battery, have you replaced the oxygen sensors?

 

[Matto1964]

V6 or V8? have you checked the battery, have you replaced the oxygen sensors?

V6 SIDI , battery has been checked, havent replaced oxygen sensors

 

[Asmodai78]

replace them and see how you go, the first 2 codes you put up indicate it could be them.

 

[lout]

o2 sensors may or may not be faulty
but are not the cause of your issues
sounds like a wiring issue to your maf/iat sensor
and as mentioned get your battery tested/replaced
edit- was cooking dinner. sorry, didnt have time to explain
if the maf and iat indicate a large amount of cold air passing through, then ecu will add more fuel
which will trigger your o2 codes

 

[Matto1964]

o2 sensors may or may not be faulty
but are not the cause of your issues
sounds like a wiring issue to your maf/iat sensor
and as mentioned get your battery tested/replaced
edit- was cooking dinner. sorry, didnt have time to explain
if the maf and iat indicate a large amount of cold air passing through, then ecu will add more fuel
which will trigger your o2 codes

We've replaced the MAF sensor and had an auto electrician test the car. He could find no faults and didnt show up any codes whilst testing. Now when we turn the car off we get overrun then stalls, running as rough as guts and now it wont start.