Topic Sponsor
General F150 Discussion General Ford F150 truck discussions and questions
Sponsored by:
Sponsored by:

2015 Ecoboost ignition problem

 
Old 02-14-2019, 07:59 AM
  #1  
Junior Member
Thread Starter
 
Join Date: Jan 2019
Posts: 12
Liked 0 Times in 0 Posts
Default 2015 Ecoboost ignition problem

I have a 2015 F-150 with the twin turbo 3.5 engine. When I accelerate with a load going up a hill the engine starts to miss and the CEL flashes. The codes are P0300 (engine misfire), P0301, P0302, P0303, ( based on which cylinder is misfiring) etc. The dealer has replaced the all the spark plugs and the defective coil packs in the appropriate cylinders with out solving the problem. In two cases the coil packs have burned up and melted.

The engine has had the oil changed, and air and oil filters replaced. 109,000 miles, 6-speed transmission. 4X4 with locking rear differential, heavy duty tow package, skid plates.

It is going back to the dealer next week for a second time. What should they be looking for as I am not confident they know what is happening.

Thank you.
Frank 2015 F-150 3.5 litre Ecoboost
farupp is offline  
Old 02-14-2019, 08:29 AM
  #2  
Senile member
 
Join Date: Jun 2017
Location: Sarasota, FL area
Posts: 2,443
Liked 509 Times in 370 Posts
Default

Do yourself a favor and check the spark plug gap yourself. May also be a ground issue if coil packs are burning up and melting.
chimmike is offline  
The following users liked this post: chimmike
idrive (02-14-2019)
Old 02-14-2019, 08:35 AM
  #3  
Junior Member
Thread Starter
 
Join Date: Jan 2019
Posts: 12
Liked 0 Times in 0 Posts
Default

Thank you, chimmike. Good points to check.
Frank
farupp is offline  
Old 02-14-2019, 04:03 PM
  #4  
Senior Member
 
Join Date: Feb 2018
Location: SE MA
Posts: 252
Liked 31 Times in 21 Posts
Default

Fuel injectors? I had to have mine replaced on a 2018. P301 code. It would shake and buck, especially up hill.
southchatham is offline  
The following users liked this post: southchatham
farupp (02-14-2019)
Old 02-22-2019, 01:53 PM
  #5  
Junior Member
Thread Starter
 
Join Date: Jan 2019
Posts: 12
Liked 0 Times in 0 Posts
Default

chimmike: I followed your suggestion to check the plug gaps. I went back to the dealer as two more ignition coils were cooked and the truck would barely run on 4 cylinders. I told them I wanted all the old parts. They worked on it for three hours and replaced two more coils under warranty and all the spark plugs, which I told them to check the gap before they installed them. They said they are "pre-gapped" to which I said check them anyway The shock was that all the brand-new spark plugs, installed previously, had huge gaps way over recommended. They said they would replace them at no charge because the gaps initially were wrong and they didn't check them. Truck now runs much better but I can smell another old coil cooking. They never replaced all the old coils which had at least 107,000 mile on them.

Thanks, again, Mike.
farupp is offline  
 


Thread Tools
Search this Thread
Quick Reply: 2015 Ecoboost ignition problem


Contact Us - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: