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Rough Idle/Stumbling in General But Especially After Fill-Up

24K views 31 replies 12 participants last post by  2019_FFS  
#1 ·
Failure show as rough stumbling idle after fill up or rough idle in general. Takes 5 minutes to change. It will take you longer to find you 10mm socket to remove engine cover then to swap out.

Ford part numbers FL3Z9B325A, GL3Z9B325A, GL3Z9B325B and aftermarket part numbers Standard CP937 (O'Reilly's) or Dorman 994073 (RockAuto). O'Reilly Auto Parts has a Lifetime Warranty on the part. Member of the FB group pointed out this is common with the Ecoboost due to topping off the fuel tank.


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Discussion starter · #12 ·
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Discussion starter · #13 ·
Can't open the Facebook link without an account but thanks for the tip regardless.
It's just a link to the same conversation on I posted in the FB group. You're not missing any other info.
 
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Discussion starter · #16 ·
How rough of an idle are we talking? Mine occasionally has slightly jumpy idle (just barely enough for me to hear the changes in RPM) since new, but nothing crazy. I also never top-off, causes way too many issues.
Like Shawnski said it is rough enough to make you think it may actually stall out/die. The 2.7 just seems to be a bit on the rough side with idle but it could also be the RMM amplifying normal operation.