Dear Commodore Experts I am trying to help a friend out with a problem with her Vp Commodore that has a mind of its own regarding no start (no spark).
Here is what I know:
A few weeks ago the car would crank over but wouldnt start (no spark), carried out all the usual checks:
Earths
Relays
DFI plate earth
Ignition switch / key
Security system
DFI connector
TP
IAC
Oil pressure switch
Leads
Plugs
3 x Coils
Battery
Alternator
Wiring Harness CAS TO DFI
Crank Angle Sensor 3 & 18 signals present (new DELPHI CAS fitted a few months ago)
Swapped another ECU
I replaced the DFI with an old one and it started (the failed Delphi DFI/coil pack was only 14 months old).
After a few weeks the same problem has returned (no spark - confirmed with a timing light). Sometimes the car will start and run but once it is turned off it wont start. You can leave it for a few hours and the bloody thing will start !!!
Any ideas ??? I am leaning towards another DFI failure.
Thanks
Peter