EFHALL42

How much does it cost when taking it into ford to replace coils and plugs?

MGD

Hi.

Prepare to get bent over if yer engine is a 5.4L 3V. You did not specify. If it's a 4.6L 2V you are somewhat in luck, as the plug breakage issue is moot, and the plugs are cheaper. Estimates below assume a 3V.

Shop prices for COPs (DG-511's) is ~$60+ each. For Plugs (MC SP-515's) it's ~ $20+ each. So that's $640 to start, not including shop labour. Typical charges are ~$300+ , if none break. There may or may not be an additional surcharge per broken plug.

These rates are up to the specific dealer - and appear to be all over the map. I'd acquire firm estimates (in writing) from all the dealers you have access to. And even a few indepndents if possible.

So bank on ~$1,000 give or take.

IF you buy the parts from Rockauto.com, you will save a bundle. Find a reputable independent shop who has done 3V's, a talented friend, or learn to do it yerself. Many have. A LOT of resources on this site and elsewhere to assist you.

good luck!

MGD

Summers22

iTrader: (2)

Why are the COP's being replaced? Plugs I understand, but unless you know exactly if a certain COP is bad or not, just replace the boots and springs on all 8 COP's. Cost for the set is only $32. I have never had a COP go bad, one truck I had over 175K on them.

EFHALL42

Well I have a shutter going on. And I know that is caused from a misfire. So I know it's one or the other. But with my truck at 82,000 I may as well just replace plugs and coils

MGD

Hi.

Yes - at 82,000 yer overdue for plug change. Ford revised plug R&R down to 60K from the ridiculous 100K it previously was, lol.

5.4L 3V, right?

I'd follow [MENTION=174015]Summers22[/MENTION] 's advice and try to save some $$$. Just do plugs & new boots. You can always replace COP's yerself later on - that is relative cake to do. Or - depending upon the specific misfire code, isolate and change only the COP (s) that are failing.

good luck!


MGD

Summers22

iTrader: (2)

Definitely do the plugs, that is most likely to cure the stuttering. While you are at it, since you are removing the COP's anyway, get a set of 8 boots and springs for $32, cheap insurance compared to 8 COP's. I file down the copper contact in the COP nipple with a fingernail file that is cut in half (have about 10 on hand) and apply a small amount of dielectric grease to the new spring before putting it on the contact. I did this on a Superduty that I sold with 175K and a Excursion that I sold with 140K, and NEVER had a COP go bad.

It's your money, but $32 for boots and springs sure beats $480 for COP's.