F250 running rough | Ford Explorer Forums - Serious Explorations

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F250 running rough

zukman

"Home of Misfit Crawlers"
Elite Explorer
Joined
August 1, 2005
Messages
1,793
Reaction score
63
City, State
arcadia calif.
Year, Model & Trim Level
'91EB, '86Sami, '85Ranger
Cold start runs rough shut it down restart runs fine 5.4 l engine any ideas??
 












This is a 49 state vehicle no egr. The throttle body was changed, it ran fine for a long time. No codes. She did explode a spark plug,(that was fun!!) Considering putting the original throttle body back on.
 






Try turning the key to on for 3 seconds, then back off and then try to start it. Your fuel system may not be holding prime.
 






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