17 3.5 Ecoboost Rattle.
05-15-2018, 06:56 PM
#361
05-15-2018, 07:17 PM
#362
I did lease but for 3 years, so in the end I will be able to drop the keys off and walk away. I have the same issue but never taken it in as it, like everyone says, goes away when the truck warms up. Does that not mean as others I have read say that it means its designed to do this till warm up?
05-16-2018, 01:35 AM
#363
I did lease but for 3 years, so in the end I will be able to drop the keys off and walk away. I have the same issue but never taken it in as it, like everyone says, goes away when the truck warms up. Does that not mean as others I have read say that it means its designed to do this till warm up?
Would really like to review the mechanical design criteria, qa/qc process, and occurrence rate on this issue.
Concerned no one has responded with a satisfactory fix.
05-16-2018, 05:50 AM
#364
Ford will eventually figure these problems out but it will probably take two more model years. I had a brand new 1998 Explorer with the new 4.0 SOHC back in the day and that thing rattled at 2200 RPM the entire 100K miles I had it. In that case it was timing chain guides front and back.
05-16-2018, 08:12 AM
#365
Here are the videos of what I'm experiencing. This morning it was 30 degrees. The engine starts normally using the remote start and I can't hear anything abnormal as the video shows. Once in drive, light taps of the accelerator produce the rattle. You can hear it at the 2, 19, 22, and other times near the end. I describe it as sounding like gears grinding when trying to put a manual transmission into gear without the clutch fully depressed, although its not really a metallic sound. I cannot reproduce the noise after 10 minutes or when warmed up.
05-16-2018, 10:14 AM
#366
Senior Member
Sounds like when the timing chain stretches from acceleration and then let’s off, it’s hitting the sides/guides causing the noise. Just my uneducated guess.
05-16-2018, 10:18 AM
#367
Here are the videos of what I'm experiencing. This morning it was 30 degrees. The engine starts normally using the remote start and I can't hear anything abnormal as the video shows. Once in drive, light taps of the accelerator produce the rattle. You can hear it at the 2, 19, 22, and other times near the end. I describe it as sounding like gears grinding when trying to put a manual transmission into gear without the clutch fully depressed, although its not really a metallic sound. I cannot reproduce the noise after 10 minutes or when warmed up.
Last edited by RockyMtn3.5EB; 05-16-2018 at 10:25 AM.
05-16-2018, 03:43 PM
#369
Junior Member
Same cold engine rattle but only while in drive on my 2018 Lariat SuperCrew with 3.5L that has 300km on it. I am going to ask the dealership about it and at least get it recorded in case something bigger comes up.
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mazzei92300 (06-09-2018)
05-18-2018, 10:48 AM
#370
Quick update. To my surprise the dealer was able to recreate the noise without my involvement, I'll take that as a good sign. They had their engine technician looking at it yesterday afternoon and I should get an update today.