Engine death rattle

[ninjafied]

I have a 2007 expedition max 5.4l
I need some help. Not always but on occasion when at idle in gear my motor sounds as if it's coming apart, all of a sudden it will start to to rattle, shake and run like shit. It's only happened either when I'm sitting in a drive though for a long time or when reversing my boat trailer up my driveway. My plugs and coils are less that a year old and I just changed the vvt solenoids. I get no warning lights on the dash and while it's happening my oil pressure stays constant. Any ideas on what to look for next?

 

[JExpedition07]

How many miles? If you changed the VCT Solenoids with no change I’m going to lean towards time for a timing job. Oil pressure is likely dropping low and the gauge won’t zero out until <8 PSI anyway. OEM solenoids?

 

[GaryB]

esh...What kind of mileage? been maintained regularly? Start following ford tech makuloco's 5.4 playlist on youtube and see if it's related to any of these issues he points out.

 

[ninjafied]

Roughly 260k km and oil changed regularly

 

[ninjafied]

Ya I'll check out the YouTube channel

 

[Matticus]

I've been having this issue on a 2012 that has a recently rebuilt motor in it. Been doing it for months. Mine finally threw a code the other day: p0394 - Powertrain - Camshaft Position Sensor "B" Circuit Intermittent (Bank 2). Goes away if I rev the engine slightly. It would only do it when I was on an incline. In addition to this, there is sometimes a bit of a "lunge" under light throttle when the engine is around 1500rpms. It's like the engine suddenly falls flat on power as it up shifts to 2, 3 and 4 and then gets little "surges' of power that make it feel like it's downshifting/upshifting over and over again. It does this until I either give it a little more throttle or it gets above 2000 rpms.

I'm taking to the guy that did the rebuild/motor swap today now that it finally has a code. We'll see what he says

 

[ninjafied]

after watching makuloco playlist on the 5.4 i'm pretty sure the problem im having is in fact a blown out seal on the timing chain tensioner. i've ordered a new timing set with phasers as well as the oil pump. i'm curious if any of you have attempted this job and approximately how long it took to complete.

 

[Trainmaster]

There's a recent post that said it was a weekend's work. Stripping the components Friday afternoon and working 'till you're fed up on Saturday and Sunday...

 

[ninjafied]

Perfect I'll get started Saturday morning and work till I'm done or take the bus to work on Monday

 

[762mm]

While you're in there, you might want to do the passenger side rocker arm rollers too. Apparently those can do quite a bit of damage when they seize, and they do wear out / seize regardless of oil changes.