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How to check for a bad coil and how to replace a coil

I own a 2000 Ford Excursion V10 6.8L; about 2 months ago #3 coil went and was replaced at the dealers. I want to know how can I do this myself so I could save alot of money. It seems simple, but how do I know which one to replace right now. My truck today is not cranking up, its turning. So I asuming that another coil must have went or can I be wrong? Also I seen online(ebay) that I could purchase the coils for as low as $10 each when I paid $100 at the dealer and at the local autopart store they are going for $50 each. Should I be aware that this could be a potential not so good of a buy?

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  • dizzylizzy21 Aug 23, 2008

    I will be tryin this either today if the rain does not move in and if not then tomorrow, but I do have a few more questions if you don't mind... the order that you gaved me, is the 1 2 3 4 5... are these starting on the LEFT side and the other 5 are on the RIGHT? This is what I am asuming? Also, is it just as simple as for looking for a spark not that I need a spark plug checker or any other type of tool to do this? And last, because of 1 coil going bad this really won't let my truck start at all? I asumed that it would still start, but that it would be a ruff since its taking the power from the other coils!?!?!



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Hi, Yes you can replace the coil yourself. I would read any comments that is on ebay about the company that is selling the coil. You can get great deals. By the sounds of it you have coil on plug. Now to fine out which coil is gone you would have to remove one at the time have some one crank the eng and you look for the spark. Before you do this remove the fuel pump fuse. The first thing to do is to fine out if you do have spark. Here is the cyl order and the firing order.

FRONT 1 2 3 4 5
6 7 8 9 10
FIRING ORDER 1-6-5-10-2-7-3-8-4-9
Hope this helps let me know.


Posted on Aug 23, 2008

  • Rob Cobb
    Rob Cobb Aug 23, 2008

    Yes you can check the spark with out the expense gear, just pull out the spark plug. Yes that is right for the location, now that is looking at the eng, from the front of the car 1 - 5 left 6-10 right. On some types of vehicles it is an safety that is set up in the computer, that if it reads a fault then it will not let the eng runs. And no I don't mind answering the question you can ask 100 questions it does not matter just remember that the only stupid question is the question that was never ask. Please let me know how you make out




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