Originally Posted by Joel Pisarek Jr.

I've got a 06 Lincoln Mark LT, bought just last Feb. Its got 82000 miles on it. Had no problems last winter. I live in Northern Maine, we had our first big storm two days ago, its get real cold and we get a foot of snow. That day, I noticed some misfires in my first and second gears and abnormal rubbing sounds, like maybe a belt or something. I take it to the shop, they scan and say cylinder 6 misfire, replace the plug with a platinum plug and then the corresponding coil. Now it sounds good like it used to. The next day, yesterday, im driving, and the engine cuts out, completely stalls. I start up and it runs for a bit fine. I notice a small tapping and low end noise from the engine. Im driving at about 30, stop at a light, and the engine cuts out again, and it says low oil pressure. I start it back up, and its fine, but now is cutting out frequently. I take it to the shop, they plug me in and we drive it around the block. at first it says cylinder 5 misfire, and then the graph is all over the charts. We pull back into the shop, and there is a much louder knocking coming from the drivers side low end of the engine. The mechanic says from what he see's the engine is toast. He says, "we usually throw these engines away at 100000 miles. They dont last long this happens to them, we've had alot of problems with this one and I think its done for." Can anyone please give me some advice? i was everything from, maybe changing just the one plug and coil is throwing all the rest out of timing? Or maybe fuel filter is clogged, bad fuel injectors? A thinner oil because it got really cold? or the cam phaser problem everybody is talking about? I have no clue, any incite would be greatly appreciated. I neeeeed this truck to be running because winters up here are brutal. I just bought the truck put only 15k miles on it since February, and owe a ****ton and this happens! Thanks everybody!

Originally Posted by joe mcmillan

I'm thinking that if you can't do the troubleshooting and at least some of the work yourself, you need to find a different mechanic. The 5.4's do have some potential issues - however, they are not throw away engines. There are many still running strong way beyond 100,000 miles. Read some of the postings where guys are over 300,000 miles.
Sounds like your guy just threw up his arms and decided to sell a new or rebuilt engine.

Originally Posted by Joel Pisarek Jr.

Hey guys, I found these on ebay, seems to me like a good deal, are these the preferred coils? Should i go for these? Video Link: http://www.ebay.com/itm/New-OEM-Motorcraft-FORD-F-150-COIL-IGNITOR-5-4L-3V-3L3U-12A366-BB-3C0792-/221576571960?_trksid=p2054897.l4275

Originally Posted by Ford Fan#1

judging by the price.. It's either used or a rip off. But I could be wrong

Originally Posted by Joel Pisarek Jr.

Okay, another question, I have an extended warranty for the truck and the dealership is saying that it looks like my motor is going to be replaced. Do I have grounds to demand a new motor or must i settle for a rebuilt motor if thats what they tell me they are going to use? Anything I should be wary of while going thru this process? I am just worried about get bad cams or getting a rebuilt engine containing other partd such as cams or (? what else should i look for?) that werent rebuild and having problems with them in the future. My extended warranty only last 8000 more miles amd i dont want problems after it expires. Thanks!!