car turns off?

[msina1]

just returned from footscray with a mate after he bought his new vs, drove back down to geelong, whilst driving round the geelong area the check something train light came on, after a bit more driving, every time when pulling up to the lights it would just shake a bit and turn off, turned back on first time?

any help?

[clubby_you]

check your battery terminals

[msina1]

will do, but if they were loose wouldnt the accessories and such turn off also?

[hako]

will do, but if they were loose wouldnt the accessories and such turn off also?

Not necessarily - the battery terminals if making bad contact will cause the computer to shut down - your acc lights etc are not controlled by the computer. If its not loose battery terminals I'd suggest you do a fault codes check as it may indicate the fault. see link attached
Checking error codes VR/VS (Revised)

[msina1]

apparently the dealer told him it was the o2 or OS censor (no idea whichm)

[Ozzie]

You can pull the battery out of the car once running and it wont do shit.
The car runs off the alternator not the battery.
If you had a stuffed alternator and the battery terminals were loose then it wont start again.

And yes sounds like the O2 sensors playing up.

[msina1]

well, suppose we'll find out tommorow, dealer said he'd fix it,

[alex2_s]

You can pull the battery out of the car once running and it wont do shit.
The car runs off the alternator not the battery.
If you had a stuffed alternator and the battery terminals were loose then it wont start again.

And yes sounds like the O2 sensors playing up.

Start your car up and just undo the negative battery terminal.

[Chris E]

Ozzie if you disconnected the battery you'd break the circuit and your car would stall. Carby cars can run with a flat battery because they don't need any power for the ecu and such. Some diesels can run without a battery because they don't need spark.

Don't mean to be lecturing or anything tho

[Ozzie]

Nope you wont break the circuit.
Try it.

The battery is only there to start the car. once it is started the alternator generates the power for the ecu.

[hako]

Not disputing but I just had a quick look on Google and found this (one of many):

"Never disconnect the battery while an alternator is in
operation. Disconnecting the battery will result in
Alternator Service
damage to the diodes due to the momentary high
voltage and current generated by the rapid collapse of
the magnetic field surrounding the field windings."

The other problem is that the momentary high voltage can fry the ECU etc.

[Ozzie]

Not disputing but I just had a quick look on Google and found this (one of many):

"Never disconnect the battery while an alternator is in
operation. Disconnecting the battery will result in
Alternator Service
damage to the diodes due to the momentary high
voltage and current generated by the rapid collapse of
the magnetic field surrounding the field windings."

The other problem is that the momentary high voltage can fry the ECU etc.

Yes its a possibility but thats with all generators, not just cars.
Its rare but it can happen.

The car will still run though

[PanthaVS]

HAHA!

Gotta love people that have to have the last say and be right!

[Ozzie]

Negative rep me if im wrong

[msina1]

curious to know as to how much it would cost to fix the O2 censor?

[hako]

There are some on Ebay - best ($65 incl postage) is below:
GENUINE HOLDEN OXYGEN SENSOR 4 WIRE VS VT VX VY VZ VE - eBay, Air Intake, Fuel Delivery, Car Parts, Accessories, Cars, Bikes, Boats. (end time 27-May-09 10:17:35 AEST)