Glenn Littleford
New Member
- Joined
- Jun 5, 2019
- Messages
- 7
- Reaction score
- 1
- Points
- 3
- Age
- 58
- Location
- Linthorpe Qld
- Members Ride
- 92 VP Ute V6 Man, 06 VZ Sedan V6 Auto
Hi guys.
Got a weird intermittent fault. The other day I went to move the Vp V6 ute after a week, and it would not start. The fuel pump didnt even prime, and no engine light. It would crank over, and if I cranked it for long enough the fuel pump would prime, as expected via the oil pressure switch.
I shorted the AB test points on the diagnostic plug and turned on the ign. The engine fan should have started, it didn't, and no flashing engine light. I tested for power at the ECU, all good, and the engine light also tested ok.
I suspected the ECU had died, so swapped it with a known good one. Same deal, nothing.
I then wondered if the engine immobiliser was some how on, even though its turned off at the key switch passenger A pillar. I turned it back on with the security key, the red LED started flashing, I used the FOB to turn that off, turned on the ignition and I could hear the pump prime. The car started.
So was the engine immobilised, even though the immobiliser was disabled? I turned the immobiliser key switch off, but the car now starts up as normal, so the fault has gone away $*#$%!!!!!
Does it sound like a immobiliser issue? If immobilised, will the ECU behave that way, ie, no diagnostic lights? I do drive down some rough rural roads, maybe there is something loose.
I had a similar issue a month back, where I drove the car out onto the street, but it just died, and I had to push it home. Next day when I went to find the problem, its started first kick.
Glenn
Got a weird intermittent fault. The other day I went to move the Vp V6 ute after a week, and it would not start. The fuel pump didnt even prime, and no engine light. It would crank over, and if I cranked it for long enough the fuel pump would prime, as expected via the oil pressure switch.
I shorted the AB test points on the diagnostic plug and turned on the ign. The engine fan should have started, it didn't, and no flashing engine light. I tested for power at the ECU, all good, and the engine light also tested ok.
I suspected the ECU had died, so swapped it with a known good one. Same deal, nothing.
I then wondered if the engine immobiliser was some how on, even though its turned off at the key switch passenger A pillar. I turned it back on with the security key, the red LED started flashing, I used the FOB to turn that off, turned on the ignition and I could hear the pump prime. The car started.
So was the engine immobilised, even though the immobiliser was disabled? I turned the immobiliser key switch off, but the car now starts up as normal, so the fault has gone away $*#$%!!!!!
Does it sound like a immobiliser issue? If immobilised, will the ECU behave that way, ie, no diagnostic lights? I do drive down some rough rural roads, maybe there is something loose.
I had a similar issue a month back, where I drove the car out onto the street, but it just died, and I had to push it home. Next day when I went to find the problem, its started first kick.
Glenn