AlwaysSomething

The supposed bad coil that we removed & replaced with a brand new one today. All the coils look like this. I was expecting/hoping for obvious visible damage! Https://scontent-lax3-1.xx.fbcdn.net/v/t31.0-8/fr/cp0/e15/q65/22550188_10156717423203662_4908256502580000370_o.jpg?efg=eyJpIjoidCJ9&oh=6fe14c29f50a84cd22db4c68911e1147&oe=5A7ECF29

Throwing the same code though, p0351, even after replacing the coil it said was bad -- car never left driveway after replacing coils& spark plugs before engine light came back on, after resetting computer/battery twice & deleting the error with the code reader. Couldn't possibly be instantly frying the brand new coil in a matter of minutes??

Thank you everyone!! Well, finally opened it up today. Spark plugs had all been replaced (with OEM Motorcraft) not terribly long ago. 5 of the 6 coils were sporting Duralast stickers, so I'm guessing someone went to AutoZone and replaced (almost) everything. Bad coil was one of the Duralast and didn't look abnormal in any way. We do all new OEM spark plugs and I replaced coils #1 through 3 with new Denso coils. Did new PCV valve & hose. Closed it all up, reset battery... Started up a little rough, let it run a bit, turned it off. Started it a second time & CEL came back on instantly. ? Reset battery again, same thing. Chugged a bit. Second time starting it also brought check engine light. Wondered if we screwed something up putting it back together and went down to Harbor Freight for a code reader. Same code... Coil #1. Cleared code & again second time starting it turned CEL back on. So now I'm suspecting it was just the damn PCM the whole time, even though PCM, all spark plugs & at least 5 of 6 coils had all been replaced somewhat recently. Oh, PCV valve & hose were also almost brand new. Again also absolutely zero issues (with the motor at least) in the 30k miles I've had it. I guess we'll try the spark plug wiring / coil harness first but... I'm almost $400 in already when you include all the tools & code reader.

I did just grab new [OEM Motorcraft] spark plugs and am not driving the car, unless it's to the Ford dealership if I give up. Although one of the local dealerships just quoted me $660 to replace coil #1 and spark plugs on #1-3 ?

Thank you addisonm06! Yes clearly it's an incredibly widespread issue with this model year! Such a shame it has not been upgraded to a recall although I understand why it has not been. I am just having a little trouble determining(/comprehending??) some of the finite details of the remedy... When PCM + coils + spark plugs are replaced/refurbished, is this known design flaw effectively FIXED? Or even with the refurbished PCM, will it still continue to be a cycle of coils & PCM failures? In other words... Will the refurbished PCM now have the protection from bad coils that the original one did not?? If a coil goes bad from normal wear & tear/lax maintenance, are we 2007-2008 Ford Edge owners forever stuck replacing/repairing PCMs? Apologies for my ignorance. If you couldn't tell, I'm just another chick who's not mechanically inclined.

Thank you both. I'd like to think the spark plugs had been changed at least once before I bought the car, but I guess you never know. I'll take a peek at the front 3 to see if they're obviously the originals. Just to confirm... If you repair the PCM, you are correcting half of the issue, right? A refurbished/repaired part should no longer have the design flaw... Or is it a constant cycle of bad PCM = bad coils = bad PCM = bad coils and so on and so on, unless you're replacing the entire set of coils + spark plugs + coils all at once? If you have a repaired PCM & a coil goes bad after at minimum 30k problem free miles, is it really that likely that you're going to be looking at a damaged PCM all over again? This is what I received back from CBM today: I just might not be able to do the coils & plugs myself before I need the car, so might just take it to Ford for the $400 to do coils & spark plugs 1-3. Wondering if I go a week or so before shipping PCM to CBM for testing if I'm going to end up with bad coils all over again.

Thank you -- you raise a really good point. I don't have a clue about the plugs. I purchased the vehicle used with 125k and I'm at almost 154k now. I don't have a great deal of faith in the previous owner's maintenance (for example, it had too-small tires when I bought it). Replacing plugs & coils would certainly be "better" than having to do PCM as well.

Well, PCM had clearly been removed previously and wasn't even tightly screwed in. Part number is for a 2007 (7U7A-12A650-HNA) but the date stamp says 03-24-11. Or what I'm presuming is a date stamp. So, if I potentially have a refurbished PCM already, but have a bad coil, do I need to repair PCM again?? Or is it fixed/protected against being damaged by bad coils? I need a drink...

Add me to the lot of affected 2007 Edge owners. Have a couple questions though... Please bear with me. I'll try to sound like I know what I'm talking about. Is there a noticeable difference between "just" a bad coil and when the PCM is done for? Had been having vibrating/slightly rough ride/idle intermittently for the past week and check engine light came on yesterday. Was perplexed because there's no rhyme or reason to when it would ride rough -- no specific gear, speed, engine being hot/cold, etc. It will just randomly feel like I'm driving on graded road for a few seconds and then back to normal. No loss of power(other than me panicking and being afraid to keep foot on the gas!). Thew code P0351 (great, so on far side). My mechanic just cleared code so will see how long before it returns. If PCM has been previously replaced, is it less likely to be damaged again by bad coils? My mechanic took quick look and said 2 of the 3 coils on near side had obviously been replaced. Called my local Ford dealership & had them look up VIN on OASIS to see if there was record of my car being serviced under the TSB (I purchased used at 125k, now have 153+k) but no luck. I guess it's possible PCM was also done. Obviously I'm hoping that because I do not seem to be experiencing such dramatic "symptoms" that it's just the one coil that needs replacing. Appreciate all the info in this thread about testing & repairing PCM vs replacing. My mechanic (who was swamped today) is a Euro car guy. I'd dropped it off so they could check when they had time, and he called me to say come get it, it needs coil #1. I brought him copy of TSB 14-0059. He was surprised when I said it probably needed PCM, said he would just replace coil (quoted $650). Had to explain the shitty design flaw of this model year. Local Ford dealership said $407 to replace the one bad coil, plus PCM would be addtl $1121 parts & labor. Not common they're lower than my guy. Thinking the $407 could be worth it to save me (who am I kidding -- my fiance and his friend, who I'd have to feed & beer, heavily) doing the labor. But really ideally, the PCM is fine..... Thanks in advance!