Bilford68 Posted August 6, 2017 Report Share Posted August 6, 2017 I have 104k on it untouched so I'm sure the plugs need replaced, light had came on on our way back from Florida, immediate loss of power and sluggishness and no a/c. Getting a p0351 code, ignition coil primary/secondary curtuit. Question is I can replace the bad coil,which is from what I've read is the 1 in 351, and all the plugs or change all of the coils while I'm in there? My other question is the difference in an oem coil and say a set on eBay are the same price, $80 for one ford oem and roughly $80 for 6 aftermarket?? Thank you for your help. Quote Link to comment Share on other sites More sharing options...
enigma-2 Posted August 7, 2017 Report Share Posted August 7, 2017 $80 for OEM or $13 for aftermarket. "You get what you pay for." MacFordEdge wrote in another post that idling and city driving puts more wear on plugs than what you are reading on the odometer. You read 104k, the plugs may actually be closer to 124k. He also wrote that changing only one coil is ok. But consider that they all may have been overheated. (Plugs with wide gaps require more current to fire. More current, more heat). Really comes down to how long you intend to keep the car. ("Pay me now or pay me later"). 2 Quote Link to comment Share on other sites More sharing options...
Brucifer Posted August 7, 2017 Report Share Posted August 7, 2017 Since this has been declassified: https://www.google.com/search?q=BA5Z-12259-A&ie=utf-8&oe=utf-8 Ignore the Amazon price and check with your local dealer as to cost to save on shipping. There is also the theory that hot coils make the PCM go nuts and needing repair, but I'm sure that's a case by case issue. If you are going to go through with a spark plug change at that mileage, I would definitely look at swapping out all the coils. Since you have the intake off, you might want to also think about changing the PCV, but that;s up to you (with a 2007, you get the added cost of the heated version - ask me how i know). 3 Quote Link to comment Share on other sites More sharing options...
Bilford68 Posted August 9, 2017 Author Report Share Posted August 9, 2017 Had a local mechanic look at it, change one coil and all 6 plugs and same result, runs same and giving same code plus he said something about ecm also. He used a mood light and had no pulse at 1500 rpm but was fine at 1700 rpm and above. His computer crashed when he was looking at it, so now I'm told I'll have to take it to the dealer. Quote Link to comment Share on other sites More sharing options...
Bilford68 Posted August 9, 2017 Author Report Share Posted August 9, 2017 Good thing is he only charged be $140 to change the 6 plugs and labor. Quote Link to comment Share on other sites More sharing options...
WWWPerfA_ZN0W Posted August 9, 2017 Report Share Posted August 9, 2017 (edited) Very possibly need to send the pcm for repair. Replace all coils at the same time. Http://Www.circuitboardmedics.com Get the plug/coil/gasket kit from Ford online dealers, as Brucifer mentioned earlier. Much cheaper that way.i https://www.tascaparts.com/oem-parts/ford-kit-ba5z12259a https://parts.autonationfordwhitebearlake.com/oem-parts/ford-kit-ba5z12259a Applicable TSB http://www.revbase.com/BBBMotor/TSb/DownloadPdf?id=176650 Edited August 9, 2017 by WWWPerfA_ZN0W Quote Link to comment Share on other sites More sharing options...
enigma-2 Posted August 9, 2017 Report Share Posted August 9, 2017 These two videos may be help. The first is to determine if the problem is a wiring problem or if it's the PCM. The second is the method used to remove the PCM to send it in for repair. 1 Quote Link to comment Share on other sites More sharing options...
macbwt Posted August 15, 2017 Report Share Posted August 15, 2017 The coil pak should fix the ignition issues and a rework PCM will finalized the 2007-2008 Achilles heel of the Ford Edge. Quote Link to comment Share on other sites More sharing options...
Brucifer Posted August 16, 2017 Report Share Posted August 16, 2017 The coil pak should fix the ignition issues and a rework PCM will finalized the 2007-2008 Achilles heel of the Ford Edge. Which heel is that? Just that it's so sensitive with the coils? I still haven't sent my PCM in yet due to budget, but the shifts has smoothed out in the mean time. 1 Quote Link to comment Share on other sites More sharing options...
macbwt Posted August 18, 2017 Report Share Posted August 18, 2017 Which heel is that? Just that it's so sensitive with the coils? I still haven't sent my PCM in yet due to budget, but the shifts has smoothed out in the mean time. This is primarily an issue with the 1st gen Duratec VCT engine. For some reason the coils back feed into the the PCM when they fail due to the spark plugs being extremely worn. The Ti-VCT 1.5 Gen Duratec does not seem to have this issue of coil failure back feeding into the PCM as much as the 1st gen does. Coils still fail but have not been causing PCM failure. Not entirely sure what electronics were changed or if the re-engineering of the Duratec to the TI-VCT had anything to do with the protection of the PCM from coil failure. 1 Quote Link to comment Share on other sites More sharing options...
sdtrader Posted December 6, 2019 Report Share Posted December 6, 2019 I had this same problem a year ago. To make a long story short I needed to replace the Engine Computer found in the firewall under the hood. The #1 Coil (DG-520) , Fuel Injector (CM-5165) and all Spark Plugs (SP-411). What I discovered is that the #1 Coil lead from the ECU had a constant ground instead of a pulsed ground on pin #17 of the computer. This makes the coil stay on and overheat which causes the cracking and destruction of the coil. The P0301 code is saying the Computer driver for coil #1 is toast. Unfortunately, I 1st tried to just replace the coil and it smoked again so do not try this without replacing or repairing your ECU. Here are some very important things to know: 1) Only use Motorcraft Parts or the ECU will reject them. 2) Buy the Motorcraft Parts on Amazon they are way cheaper. Coils $60 Injector $43 Spark plugs $3.50 ea 3) I used a company on eBay named your_part_source for the ECU and it worked perfectly. Cost $195 4) Make sure to get the model number off of the ECU in your Vehicle to match it properly. 5) Send them your Vin# so they can program it into the new unit for you (No Charge) or else you will have to head to a dealer. 6) You will need to call a mobile locksmith to have your keys programmed to the vehicle security system (PATS) to allow it to start $60 7) Once you replace the parts and program the keys all the codes go away and the vehicle runs great. 8) A side note the AC stops working with this problem also and returns after the repair. 1 Quote Link to comment Share on other sites More sharing options...
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