How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask virtual auto tech. Your Own Question
virtual auto tech.
virtual auto tech., master tech.
Category: Ford
Satisfied Customers: 350
Experience:  A.S.E. Master technician. Over 13 years working on import & domestic. Owner/operator of an auto shop
Type Your Ford Question Here...
virtual auto tech. is online now
A new question is answered every 9 seconds

F 150: 2004 Ford F-150 miss fire 2-4. Changed coils and plugs.

Customer Question

2004 Ford F-150 miss fire 2-4. Changed coils and plugs. Still does it. Starts fine when cold then a couple seconds later starts rough idle and dies then has trouble starting. 5.4 triton
Submitted: 5 months ago.
Category: Ford
Expert:  virtual auto tech. replied 5 months ago.
Hi, I'm sorry you are having trouble with your ford. I will try to be of some help for you. Are you saying that the mid is 2 & 4 or 2,3,4? And are you checking them with a scanner? Also did the problem come on suddenly or have you been having other problems like lack of power and such?
I ask because it sounds like your cat might be completely clogged, esp on that bank. Try removing both upper O2 sensors and see if it runs better?