Home
What's new
Latest activity
Authors
Store
Latest reviews
Search products
Forums
New posts
Search forums
What's new
New posts
New listings
New products
New profile posts
Latest activity
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
Cart
Cart
Loading…
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Search titles only
By:
Menu
Log in
Register
Navigation
Install the app
Install
More options
Change style
Contact us
Close Menu
Forums
Mustang Forums
2015+ S550 Mustangs
5.0L Coyote V8 Engine Modification/Discussion
New coyote gen 2 stock replacement not running right
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Dave Johnson" data-source="post: 16255799" data-attributes="member: 195765"><p>Hi I just finished installing a brand new coyote crate motor in my 2015 mustang after I bent valves in the original one. Brand new motor from Ford Performance through Summit racing and I'm getting an intermittent lean condition and random misfires, usually mid throttle, cruising with the revs up aroung 2-3k. I upshift into overdrive and it clears itself up after maybe 10 seconds but it seems to keep coming back. This is a brand new motor complete with injectors, intake, throttle body, almost everything. I still have the factory fuel pump, o2 sensors and computer. I did upgrade to the BBK headers and cat delete, and have the proper tune for those. Same difference on factory tune or new tune. Any of you guys have any ideas what could be doing this?</p><p></p><p>Update: new O2 sensors upstream and no change. Still stuttering just a little while cruising and then the way lean condition and bad bogging for about a mile of driving.</p></blockquote><p></p>
[QUOTE="Dave Johnson, post: 16255799, member: 195765"] Hi I just finished installing a brand new coyote crate motor in my 2015 mustang after I bent valves in the original one. Brand new motor from Ford Performance through Summit racing and I'm getting an intermittent lean condition and random misfires, usually mid throttle, cruising with the revs up aroung 2-3k. I upshift into overdrive and it clears itself up after maybe 10 seconds but it seems to keep coming back. This is a brand new motor complete with injectors, intake, throttle body, almost everything. I still have the factory fuel pump, o2 sensors and computer. I did upgrade to the BBK headers and cat delete, and have the proper tune for those. Same difference on factory tune or new tune. Any of you guys have any ideas what could be doing this? Update: new O2 sensors upstream and no change. Still stuttering just a little while cruising and then the way lean condition and bad bogging for about a mile of driving. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Mustang Forums
2015+ S550 Mustangs
5.0L Coyote V8 Engine Modification/Discussion
New coyote gen 2 stock replacement not running right
Top