VE omega starts then doesnt start up again

[Vegeta-87]

Hey guys first time posting here thought you blokes could help me out i bout an 06 omega for my daughter off my mum car has been well looked after when mum owned always serviced by holden when i bought it did the same til they started jacking up the prices on everything so stopped going anyway recently my daughters car has been cranking over abit weird it turns but doesn’t start first go but does second go and then if she drives it even if its only a 10 minute drive when she turns it off it will crank but not start and basically acts like the battery is dead but the battery is brand new changed plugs fuses so not sure what is making the car not start up again after shut off but any help would be great

 

[uglyoldfatbastard]

when she turns it off it will crank but not start and basically acts like the battery is dead

Which one is it?
Car cranks which means the battery is turning the engine over
OR
Acts like battery dead - engine will not turn over

It can't be both in the same sentence as it does not make sense!
If the starter motor is going and the engine does not start once it is warmed up and turned off it could be quite a few things but crank position sensor or ecu would be near the top of my list to check.

 

[Vegeta-87]

Which one is it?
Car cranks which means the battery is turning the engine over
OR
Acts like battery dead - engine will not turn over

It can't be both in the same sentence as it does not make sense!
If the starter motor is going and the engine does not start once it is warmed up and turned off it could be quite a few things but crank position sensor or ecu would be near the top of my list to check.

Starts turn over and then wont start drains the battery trying to start sorry should have added that thanks for spoting that

 

[gazzat]

Starts turn over and then wont start drains the battery trying to start sorry should have added that thanks for spoting that

Hello, just wondering did you get your problem sorted out yet. Cheers Garry

 

[Vegeta-87]

Hello, just wondering did you get your problem sorted out yet. Cheers Garry

Not yet

 

[lout]

Not yet

but hasnt answered basic questions
when it doesnt start does it crank normally
have you put a multimeter on battery when attempting to crank

 

[Vegeta-87]

but hasnt answered basic questions
when it doesnt start does it crank normally
have you put a multimeter on battery when attempting to crank

Answered the question dont need a multimeter when the battery is two weeks old but just to answer that one for you i did test the battery and its fine now il say it as simple as i can the car will start up fine then it could be a trip to the shop 10mins up the road or my wife will drive it to work 30mins away as soon as the car stops thats it doesnt turn over but wait long enough like 30 mins and the car will crank as normal

 

[Vegeta-87]

Answered the question dont need a multimeter when the battery is two weeks old but just to answer that one for you i did test the battery and its fine now il say it as simple as i can the car will start up fine then it could be a trip to the shop 10mins up the road or my wife will drive it to work 30mins away as soon as the car stops thats it doesnt turn over but wait long enough like 30 mins and the car will crank as

but hasnt answered basic questions
when it doesnt start does it crank normally
have you put a multimeter on battery when attempting to crank

pretty sure i answered the question that was asked mate did i fix the problem and i answered basic enough not yet so what part was unclear

 

[lout]

drains the battery trying to start

crank but not start and basically acts like the battery is dead but the battery is brand new

dont need a multimeter when the battery is two weeks old

did test the battery and its fine

now lets start again
"fine" is not good enough for diagnostics
what is the static voltage in the morning
what does it drop to when cranking
what is the voltage when you get home before turning engine off
15 minutes later what is the static voltage
what does it drop to when cranking
the battery is the first piece in a long and complicated puzzle
new does not mean good
ve have a history of battery problems
if you dont want to try to diagnose that's fine, but let us know

 

[Fu Manchu]

Yep, get voltage issues out of the way and confirmed with figures.