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Why do the coil packs go out so often on this vehicle

(1999 Ford Expedition)
in Shreveport, LA on July 10, 2014
I have changed the entire set of these on this truck twice within the last 2 years. One by one has gone out and I have replace it.
The truck starts missing really bad
1 year ago I got a tune up and replaced all 8. So frustrated these things are expensive. But its my only transportation.
I know its an old truck but really HELP !!!!!!!
The parts came from advance auto parts. Is it the parts or the truck.
Displaying 2 answers & 6 comments
Popular Answer
on July 10, 2014
I know it's expensive... Really I do!!.... But the only way to go here is Motorcraft or equivalent quality parts.... Maybe you can replace just the coil(s) that are misfiring for now and go from there. Strongly suggest Motorcraft spark plugs for sure! Check with Advance Auto... Parts may have warranty. Check to see if they offer Motorcraft coils, the one here at home in VA. Does!... IF so, and warranty is in effect, then just pay the difference for the upgrade!
on July 10, 2014
Ive seen motor craft on Amazon.com. Can those parts be trusted, they are way cheaper than local area stores. Right now all I can afford is to replace the one that has misfired. But they do have a set that is maybe right at $200 and they say they are motor craft. should I pay for a diagnostic now. Or just get the code for which coil has misfired ???? thanks so much appreciate your info.
on July 10, 2014
"Motorcraft" parts is what you need regardless of where you buy them! Just replace the defective coil... If that's is the problem!!!!.... Injectors give some trouble also!... That's about all we can help you with online....
on July 11, 2014
Thank u !!!! Much appreciated
on July 11, 2014
of Greg's Orange Auto on July 10, 2014
USE ONLY MOTOCRAFT,PROB SOLVED
on July 10, 2014
Amazon has a set for 50-60 and one for 200 which ones should I trust.
of Greg's Orange Auto on July 10, 2014
MOTOCRAFT ONLY
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