Just picked up an 06 TB 4.2/AT/4wd with 190K at the auction (former fleet vehicle)... drove a few miles, and oil pressure drops to "0" (with associated valvetrain starvation noise).
Turn off, wait a few seconds, restart, and 40 psi.
Idled with 40 psi for 10 minutes.
Drive 30 feet, and pressure drops to 0 again... wash & repeat
Pressure now fluctuates 20-40 psi at idle - obviously a suction/delivery issue.
Not very familiar with the 4.2.
Is there a common issue with pick-up screen or oil return port blockage, or perhaps oil pumps/check springs? Or did I just buy a turd?
Of course it was "as-is" due to mileage, but showed no signs of oil pressure issues, just a cam sensor code.
Turn off, wait a few seconds, restart, and 40 psi.
Idled with 40 psi for 10 minutes.
Drive 30 feet, and pressure drops to 0 again... wash & repeat
Pressure now fluctuates 20-40 psi at idle - obviously a suction/delivery issue.
Not very familiar with the 4.2.
Is there a common issue with pick-up screen or oil return port blockage, or perhaps oil pumps/check springs? Or did I just buy a turd?
Of course it was "as-is" due to mileage, but showed no signs of oil pressure issues, just a cam sensor code.