Coil Packs
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New User
Joined: Dec 2003
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From: Virginia
Coil Packs
My 2001 F-150 6 cylinder is being repaired for a bad coil pack for the second time in a month. I have only had the truck for two months, can anybody tell me if this is a common problem and can I expect to replace the other 4 in time to come?
Thank you
Cranky in Virginia
Thank you
Cranky in Virginia
Senior User
Joined: Apr 2002
Posts: 201
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From: Schaumburg, IL
i had one replaced a while back. mechanic said when he called ford to see if it was in stock, they said they had lot of them. like he said, they don't stock a lot of anything unless they know they'll sell them.
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Joined: Jun 2002
Posts: 56
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From: Boothbay USA
the 4.2 liter v6 engine only has one coil pack. It's the v-8's that have individual coil packs for each plug. I'm having trouble with my truck, but FORD can't find the problem, and i'm trying to decide if i want to try changing the coil. I'm curious....what made ford decide it was bad??
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Joined: Jan 2004
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On the cyclinders I was getting a HARD code reading on #5 & 8 with 'key-on-engine-off', I found the problem was the connections between the COP and the spring. I removed the rubber boot from the COP and gently twisted and pulled the spring out of the COP. The connector inside the plastic housing was corroded/oxidized, probably caused by moisture and lack of a good tight fitting. I took some emory cloth and a small file and cleaned and sprayed them with a little electric contact cleaner. Next I slightly crushed the end of the spring to ensure a tighter fit.
I went through the rest of the COPs and found the same thing, even though they were not registering but were intermittent. Cleaned them up as well and now it runs great and I didn't need to purchase any new components
Might be worth pulling one of the easier COPs and inspecting it.
Good Luck
I went through the rest of the COPs and found the same thing, even though they were not registering but were intermittent. Cleaned them up as well and now it runs great and I didn't need to purchase any new components
Might be worth pulling one of the easier COPs and inspecting it.
Good Luck
Senior User
Joined: Jun 2003
Posts: 434
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From: Hawaii
Do all the V8's have coil packs? My 1999 4.6 has what appears to be 2 distributers. One for each side with 4 wires coming out of each one heading to the plugs on each bank.
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Hotshot
Joined: Aug 2002
Posts: 12,679
Likes: 15
From: BC, Canada
The 97-99 4.6 had 2 coil packs with 4 plug wires off each one.
They have no distributor like an older engine had....just the coil packs.
A COP is an individual coil sitting on top of each spark plug. The 2000 and up 4.6 uses those.
They have no distributor like an older engine had....just the coil packs.
A COP is an individual coil sitting on top of each spark plug. The 2000 and up 4.6 uses those.
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Hotshot
Joined: Aug 2002
Posts: 12,679
Likes: 15
From: BC, Canada
I dont really think one is better than the other. I've seen more failed COPs than the older style coil packs that you have though.
I personally would rather work on an engine with COPs as I think they are easier to work on. Replacing plug wires on a 4.6 is a real pain, in my opinion.
I personally would rather work on an engine with COPs as I think they are easier to work on. Replacing plug wires on a 4.6 is a real pain, in my opinion.
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