OVERKILL
$100 Site Donor 2021
Friday night my wife drove through a lake of a puddle and the Expedition started running like a bag of poo. I figured she nuked one of the coils or got water down one of the plug wells. I've had that happen before.
Hauled out the scanner (Auto Enginuity) and it showed a code for #6 cylinder. I dug into it, and there was water all around that plug hole so I blew it out with air, took the boot off the coil, dried the works....etc. Greased it and put it back in. Cleared all the codes.
Got a pending code for #2 (and the truck was still running horribly) which I did the same procedure on. After another subsequent start, the CEL came back. Didn't know which cylinder it was at that point as the laptop battery died and it was late at night. I said screw it and figured I'd pick up a coil to start with.
Saturday came and the Ford dealer website said the parts department was open. It wasn't. So no progress all weekend.
Wife went to Ford this AM and grabbed a coil. I was unpleasantly surprised that the price on them had almost doubled since the last time I bought one. So she came home with that, and a tube of Motorcraft dielectric grease.
I went home for lunch, fired up the laptop, plugged in the scanner and there was a hard code for #6 cylinder again. #2 was again pending.
I swapped out #6 coil, fired it up and it ran fine, no missing. Now, when we were on our trip down east, when it was insanely cold, on some of the hills when it was holding a gear and not downshifting it would buck, which was a misfire of course. So I figure #2 coil is weak, but isn't misfiring enough to set a hard code, but is missing enough that it has caused a pending.
She's going to go pick up another coil (for #2) this aft and I'll probably change it when I get home from work.
This means 5 of 8 coils have now been replaced on that engine once I swap out #2.
Those unfamiliar with Ford's cylinder numbering:
4 8
3 7
2 6
1 5
FRONT
#4 - It got shot out when the plug popped but had been replaced for catching the dead before that.
#8 - Replaced due to misfire
#7 - Replaced due to misfire
#6 - Replaced due to misfire
#2 - Replaced due to misfire
I'm surprised #3 hasn't died, as 4, 3 and 2 have the rear coolant lines running right over top of them so they get HOT.
I'm contemplating just replacing the remaining 3x OEM coils as preventative at this point. The odds seem to be in favour of them dying at an inopportune moment in the middle of a trip or something and that's a problem I'd rather avoid. Seems a sound investment given the truck otherwise runs like a Swiss watch.
Hauled out the scanner (Auto Enginuity) and it showed a code for #6 cylinder. I dug into it, and there was water all around that plug hole so I blew it out with air, took the boot off the coil, dried the works....etc. Greased it and put it back in. Cleared all the codes.
Got a pending code for #2 (and the truck was still running horribly) which I did the same procedure on. After another subsequent start, the CEL came back. Didn't know which cylinder it was at that point as the laptop battery died and it was late at night. I said screw it and figured I'd pick up a coil to start with.
Saturday came and the Ford dealer website said the parts department was open. It wasn't. So no progress all weekend.
Wife went to Ford this AM and grabbed a coil. I was unpleasantly surprised that the price on them had almost doubled since the last time I bought one. So she came home with that, and a tube of Motorcraft dielectric grease.
I went home for lunch, fired up the laptop, plugged in the scanner and there was a hard code for #6 cylinder again. #2 was again pending.
I swapped out #6 coil, fired it up and it ran fine, no missing. Now, when we were on our trip down east, when it was insanely cold, on some of the hills when it was holding a gear and not downshifting it would buck, which was a misfire of course. So I figure #2 coil is weak, but isn't misfiring enough to set a hard code, but is missing enough that it has caused a pending.
She's going to go pick up another coil (for #2) this aft and I'll probably change it when I get home from work.
This means 5 of 8 coils have now been replaced on that engine once I swap out #2.
Those unfamiliar with Ford's cylinder numbering:
4 8
3 7
2 6
1 5
FRONT
#4 - It got shot out when the plug popped but had been replaced for catching the dead before that.
#8 - Replaced due to misfire
#7 - Replaced due to misfire
#6 - Replaced due to misfire
#2 - Replaced due to misfire
I'm surprised #3 hasn't died, as 4, 3 and 2 have the rear coolant lines running right over top of them so they get HOT.
I'm contemplating just replacing the remaining 3x OEM coils as preventative at this point. The odds seem to be in favour of them dying at an inopportune moment in the middle of a trip or something and that's a problem I'd rather avoid. Seems a sound investment given the truck otherwise runs like a Swiss watch.
