My 5l VS commodore series two keeps turning off randomly while i'm driving, has occurred while i'm driving along the engine jus cuts out. Wat could be causing this?


Asked by Geoff Oct 21, 2009 at 04:05 AM about the Holden Commodore

Question type: Maintenance & Repair

I've taken it to a Mechanic who tested the ingnition module an couldn't find the problem, a few minor wiring faults were repaired but has since done it again more than once. If it sounds like more of a mechanical problem than a computer problem i'd really like some advice as to wat need's replacing/ repairing,

5 Answers


maybe chek fuel pressure or fuel reg coz a small mechanical fault will make the computer shut the engine off


Try this guide (copied from Darren, Justcommodores forum) [] 1. Locate the diagnostic connector under the the steering column on the drivers side. 2. Grab a paper clip and bridge pins number 5 & 6 'black' and 'white with black stripes' respectively on the ALDL (Assembly Line Diagnostic Link) connected which are located on the top row counting from the left. 3. Jump into the drivers seat and turn the key twice (so lights are up on the instrument cluster). 4. If you bridged out the correct wires 'Check Engine Lamp' will be flashing. 5. The flashes are divided into 2 groups with roughly a second between each. You can read the flashes as follows: The first series of flashes is tens, so for example lets say the first flash simply flashes once, this means the code is 10. After the pause (~1 second) a second series of flashes will appear, if this number is 2, the code it is spitting out is 12 which means everything is fine. 6. Another example just so you're sure The first series of flashes you count is 4 meaning 40, the second series of flashes is 3. Adding the 40 and the 3 will give you a code of 43 which means the Knock sensor circuit is experiencing problems. 7. Each code the computer picks up is repeated three times with ~3 second pause between, so its wise to sit there to make sure there isn't any problems it has picked up. 8. Once you are finished turn off your ignition and remove the paper clip. It is important to note not to drive the car around while have wires are bridged as this will prevent new codes from being logged. Checking the computer for codes is used in conjunction with the computer Fault Codes located here: ----- I'd also check this page out as well:

2 people found this helpful.

i myself own a 5l vs commodore, this problem happned to me, found to have a broken engine mount causing the knock sensor to cut power to the motor and sometimes blowing the engine fuse, this may or may not be the problem. check your engine mounts.

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