Replacing ignition coils
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New User
Joined: Dec 2013
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Replacing ignition coils
I am thinking of replacing the ignition coils (coil on plug type), Has anyone used anything other then OEM with any success? I have heard the Accel brand do not last long. Anyone used MSD or Granatelli?
Elder User
Joined: Jan 2010
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From: Ontario, OH
i'm also interested in this topic. I just changed my plugs on my 2010 4.6L and when i removed the back left electrical connection to my coil i broke off the retention tab on the oil. I was at least smart enough to double check all connections before i closed the hood and that is when i found the loose connection. Fordparts.com wants $75 for a new one, autozone wants $55, and rockauto.com wants $44. these prices are all motorcraft brand, which is what i'll probably stick to and purchase from rockauto when i order new covers and gaskets for my front and rear diff's.
Super Moderator
Joined: Jan 2008
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From: Maine, Virginia
If it ain't broke, don't fix it.
However, I bought a spare COP for my Expy 4.6L and I have a hand held auto zone scan tool. That should pin point which cylinder is misfiring if or when it occurs.
I went to the dealer and bought mine, I got soaked. Go through Rock Auto and get the motor craft brand.
However, I bought a spare COP for my Expy 4.6L and I have a hand held auto zone scan tool. That should pin point which cylinder is misfiring if or when it occurs.
I went to the dealer and bought mine, I got soaked. Go through Rock Auto and get the motor craft brand.
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Joined: Sep 2010
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This is also a topic in the Mustang world, that pops up every now and then. From what I can tell from reading several Mustang forums, the stock Ford COP's are just as...or more...reliable than any of the aftermarket COP's available. There seems to be no advantage...and sometimes a disadvantage ( i.e. poor quality control ) in using an aftermarket COP. Believe me, the Mustang guys try to find anything that will give them an advantage and they have tested this area pretty thoroughly. The past 2 years I've worked on the Roush Performance Grand Am racing team and will be working with ROUSH Road Racing on Jack Roush Jr.'s Mustang in the Pirelli World Challenge series this year. I can tell you that they run the stock Ford COP in the Boss 302R Mustang. If there was something better and more reliable out there, Jack Roush and Doug Yates ( Roush/Yates Engines ) would have found it and would be using it.
Mountain Pass
Joined: Dec 2005
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I have the Accel on my 2006 5.4 and have had no problems in a year. I bought them from Amazon for around $250/
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From: Sioux Falls Area
Generally, with the COP's, the consensus is to use OEM coils. They seem to be well designed and very reliable.
I just had to have one replaced on my Expedition, and my mechanic got one from NAPA. I looked at the box and the coil and they are made in USA. So they are an option as well, IMO.
I've used this guy for years for the jobs i can't/don't want to do because he has a reputation of doing it right. That is to say, he won't use cheap crap unless you give it to him and tell him to put it on (and even then, he'll do it under duress and tell you it is cheap crap and you should use something else). So, IMO, if the aftermarket NAPA part is good enough for him to use, it is good enough.
But, OEM will not steer you wrong.
I just had to have one replaced on my Expedition, and my mechanic got one from NAPA. I looked at the box and the coil and they are made in USA. So they are an option as well, IMO.
I've used this guy for years for the jobs i can't/don't want to do because he has a reputation of doing it right. That is to say, he won't use cheap crap unless you give it to him and tell him to put it on (and even then, he'll do it under duress and tell you it is cheap crap and you should use something else). So, IMO, if the aftermarket NAPA part is good enough for him to use, it is good enough.
But, OEM will not steer you wrong.
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