Every now and then, I like to rev the engine a little, but when I did it today noticed a distinct difference in noise beginning around 3,500 RPM and above. The engine sound turns more coarse and reminds me of Honda's VTEC kicking in at a predetermined RPM. I recorded this sound clip with my...

YouTuber Ford Boss Me inspired me to make this video, as he theorized longer cranking times can mitigate (or totally prevent) the notorious 2nd gen 3.5L EcoBoost V6 startup rattle. I experimented with different cranking times consisting of approx. 2, 3, 4, 6, and 8 seconds, and 1, 2, and 3...

Hello all! I have been researching this for over a day now and have not found too much on it. I am traveling in Colorado where their regular gas is 85 octane (something with elevation). I put 10 gallons of 85 octane in my 2015 3.5 ecoboost before realizing it. From my understanding this is...

Over several months I've been doing a lot of digging into this rattle 2nd gen 3.5s and 5.0 Coyote V8s are becoming notorious for. One day I decided to make a video on this (along with the many videos already on YouTube), and I've discovered some interesting things that lead me to believe cam...

Had my truck for the past 3 years 76,000 miles. I have spent a lot of time reading through these posts, some helpful some not. Decided to join tonight considering I had the time and a couple questions. Just recently had my timing chain replaced due to rattle on cold start, occasional sluggish...

It really sounds like it is coming from the back of the oil pan, but you can feel the whole motor vibrating. Any ideas? It is not the A/C compressor bearing, doesn't make the noise unless it is in gear. You see the rpms drop to just about 500 and it starts rattling. Touch the gas and it is gone...

So I have a 2014 ecoboost that I recently purchased. A few weeks into driving around town it started to make this buzzing noise upon acceleration. It seems to only happen after a cold start (10-15 min into driving) and for a few seconds at a time. Then it just goes away for pretty much the rest...

First of all, Hello to everyone here. Got my new 2014 FX4 supercrew about a month ago. I have to say that I really like the truck and so far have little to complain about even with the poor gas mileage. I was wondering if anybody has experienced a low growling noise that almost sounds like the...