Currently having issues with a customers FG XR6T Ute. The vehicle came in with a issue of stalling once at operating temperature.
After many tests and data logging it has been determined that the issue is caused by the vct advancing and retarding the cams beyond a stable condition. These conditions have created and overlap of 60 degrees. After reaching operating temp if the vehicle comes to an idle condition it immediately stalls and will not start without unplugging the vct solenoids. Now interestingly enough the vehicle runs brilliant under any load or power conditions. Can cruise on the highway without any cam angle errors. As soon as you pull up, cam angle errors on both cams.
Now before we get too carried away I will list the solutions and tests I have conducted.
Read the codes using Forscan, Launch and Snapon scanners, codes are - P1383-00 and P1381-00
Replaced VCT solenoids
Replaced VCT cam angle sensors
Replaced VCT cam gears
Replaced the cams themselves
Checked cam craddles and oil passages
Checked oil pressure
Changed Ecus and tunes, strategies etc
Disabled VCT control at rpms bellow 2000rpm
Raised airflow at idle
Raised idle rpm to 1000rpm
Checked voltage at the vct solenoid plugs and at the ecu. Approx 4.5v before the issue and 12v+ once the issue occurs
Checked and added engine earthing points
Checked fuel trims stft and ltft.
I'm stumped at this point. I've tried and looked at anything surround this issue
Here is the log from last run, also a screenshot.
If anyone could throw their 2 cents worth, Would be great thanks you.
30-08-2022 06-16-08 PM Log.teclog
