Spark plugs???
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Junior User
Joined: Jul 2008
Posts: 88
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Spark plugs???
Why does my 05 run like it has spark plugs and is missing on two cylinders? Only when its cold start and drove. Runs great when warmed up. No codes are thrown.Oh.. I did get a P2290 code but did not get it again. 
FTE Legend
Joined: Jul 2005
Posts: 65,938
Likes: 1,432
From: Millersville, MD
Could be a little of both...I'd first test the FICM voltage as per the instructions in the tech folder : https://www.ford-trucks.com/forums/3...ch-folder.html
then if OK run some Rev-X or other injector cleaner through it to see if it helps.
then if OK run some Rev-X or other injector cleaner through it to see if it helps.
