2013 F150 5.0L P0024

Having an issue with 13 F150 5.0L MIL on with P0024 code . History on vehicle is 267600 miles, bought truck from auction and came not running . Teardown front plate to find that Bank 1 secondary chain destroyed because tensioner failed . So timed engine again with new chain / used tensioner and truck ran fine . Vehicle had plenty sludge build-up from little or no service so after cleaning with a diesel /oil mixture. The MIL starting showing about two weeks ago and giving the history of the truck I change the vtc soleniod but the light came back after a short test run . I have an Autel MX808 and an OWON Oscilloscope(just got it never used a scope). So I could use any help offered

have you checked for a stuck vvt solenoid?? maybe try switching from bank 1 to 2

almpost sounds like maybe a phaser is stuck in the advanced position. do you have a scanner that can read desired/ actual timing??

Both vtc soleniod was changed on Bank 2 . I not sure that truck has phazers . I am using IDS also so I would check timing actual and desired
Thanks for reply

Is there a available waveform for this vehicle please

Two images from IDS for Bank 2

No known good waveforms that I can find. Kinda tough to make out what's going on in those photos. Can you take a screenshot instead?

It looks like the bank two exhaust cam difference is zero in your picture. So that'd suggest that the problem isn't happening right now, OR the VVT system is in open loop. As in, the code set and the PCM quit trying to manage the VVT.

Does the code set immediately on startup? Or does it need a test drive? If it doesn't set right away, then you can likely rule out chain timing. Besides, the code description of 'over advanced' suggests that the phaser is stuck parked, not actuated.

I've had luck getting stuck phasers moving by disconnecting the corresponding solenoid and applying full power and ground to the solenoid directly. This applies full oil pressure to the phaser and can sometimes get a sticky one to free up. Pulse it several times and listen for the engine idle to change. Don't apply it longer than momentarily, so you don't overheat the solenoid.

The soleniods are brand new on that Banks but the if I clear the DTC the dtc would happen after about ten minutes of driving

fahead32 wrote: The soleniods are brand new on that Banks but the if I clear the DTC the dtc would happen after about ten minutes of driving

Gotcha. That'd suggest a lack of phaser movement, IMO. I'm betting that VCT_EXH-DIF2 PID will show the problem during a test drive. You may be able to reproduce the problem by power braking the engine in the shop, rather than test driving. Normally, those difference PIDs will briefly show a reading during load change, then go right down to zero. Any kind of steady reading is an issue.

Given that the solenoid is new, I'd suggest you're looking at a failed phaser, or a lack of oil pressure to the solenoid. Or, the solenoid screen is plugged up with debris after being run for two weeks after the oil flush. You can try that phaser cleaning procedure I described, or get the bank two valve cover off and start investigating.

Thanks for your reply
Are you refering to the spring loaded phazers like on rhe 5.4L? if so this engine dont carry them. The vct solenoid sit right in front of the camshaft sprocket

fahead32 wrote: Thanks for your reply
Are you refering to the spring loaded phazers like on rhe 5.4L? if so this engine dont carry them. The vct solenoid sit right in front of the camshaft sprocket

Right, that sprocket is the phaser. The sprocket is doing all the timing change, the solenoid just opens the oil control valve in the phaser.