COP problems on 5.4L Triton
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New User
Joined: Sep 2005
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COP problems on 5.4L Triton
I have a 2001 with 135,000 miles. Today I just replaced my third coil. So far I have replaced the coils on cylinders 5 (sometime in 2003), 6 (this June), and 7 (today). The service manager of the local dealership says I should expect these kinds of failures given the mileage, but also says that I may or may not have to replace any more in the lifetime of the truck, it "just depends". I asked if replacing the boots or taking extra precautions to keep moisture away from the engine was warranted, he said "No, it's more a problem with buildup with heat in the engine compartment". Sounds like BS to me, seems like Ford should have been able to design for the expected heat environment.
I note from searching this forum a fair number of posts regarding replacement of COP's, but I can't tell from these posts if anyone thinks this is a result of poor design and/or faulty components, or if everyone accepts the frequency of coils needing replacement as just one of those things that comes with the territory. I'd like to know what the community thinks...
Also, has anyone else complained to Ford and gotten any kind of redress??
I note from searching this forum a fair number of posts regarding replacement of COP's, but I can't tell from these posts if anyone thinks this is a result of poor design and/or faulty components, or if everyone accepts the frequency of coils needing replacement as just one of those things that comes with the territory. I'd like to know what the community thinks...
Also, has anyone else complained to Ford and gotten any kind of redress??
Elder User
Joined: Sep 2005
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This is a situation that I as a tech have lots of problems trying to explain to an irate customer that has just had a coil replaced for a misfire. These coils do seem to have a limited life-span, but it certainly doesn't warrant replacing all the coils at once because one has failed. It's happened to me many times that a coil has failed a few weeks after replacing one of the others. The coils and boots have been updated a number of times over the past 13 years, and seems like they're getting better... after all, what do we pay the engineers for??
Last edited by CanadaGuy; Sep 28, 2005 at 05:07 PM.
Hotshot
Joined: Jul 2005
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i think the guy is right. 10 years ago if your ignition coil wient out at 135,000 miles you would have thought that was acceptable. if it was still o.k. at 175,000 you wuld consider yourself on borrowed time. --- the problme now is you have 8 individual coils which could have 8 individual failures and that seems excessive to some people. i have 130,000 miles on a 2001 and no failure yet. i think heat probably could have a lot to do with it.
Senior User
Joined: May 2003
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From: Gilbert, Arizona
My question is how do you pinpoint a coil that is going bad?? It has to misfire so many times before it will throw a code. I am positve I have a coil that is going bad, but is still hanging in there.
I have replaced ALL FOUR 02 sensors recently and I am still getting a check engin light and the code reads 02's. I think the 02s are fine and I have a misfire every so often which isnt buring up all the gas. PLUS, I can feel a loss of power every once in a while, it feels like I am turing on the A/C.
I have replaced ALL FOUR 02 sensors recently and I am still getting a check engin light and the code reads 02's. I think the 02s are fine and I have a misfire every so often which isnt buring up all the gas. PLUS, I can feel a loss of power every once in a while, it feels like I am turing on the A/C.
