I upgraded my 2018 Expy from 3.0 to 3.4 with no major issues. One weird annoyance, on Bluetooth calls it sometimes sounds like a robot or underwater. I did a master reset on the radio and repaired but still having the same issues. Anyone been able to fix this?
Actually the dealer just called back from Tyler Tx (where i purchased) and told me from the video I sent it definitely sounds like cam phasers. They even text me the Special Service Message 48445 that talks about this noise and to replace all four VCT units (6256/6C525) and update the PCM...
I went ahead and drained the oil and put 6 qts of Motorcraft 5w-30 in it so I know it's right. I will record it tomorrow morning if it does so everyone can hear it. It almost sounds like the engine is coming apart for about 2-3 seconds.
I also followed the owners manual guide for checking oil. Warmed up to operating temp, let cool for 15 minutes and then check. Was surprised to see the oil way above the top mark, debating draining out or just changing even though it's new.
I just bought a Certified 2018 Ford Expedition Limited with 40k miles on it. It was a one owner lease and everything seems good on it. The past few mornings when the wife starts it, there is a terrible sound from the engine area for a few seconds and then it goes away. After that, we can restart...
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