Ignition Coils, what brand?
Thread Starter
|
Freshman User
Joined: Aug 2014
Posts: 36
Likes: 0
Ignition Coils, what brand?
Posted this in the engine section but have also noticed a lot of threads in that forum with 0 replies. So, figured I'd post it here since most of you here have some experience with this...
So I have a misfire in my 2001 Excursion V10 only under load at low RPMs. Had the truck in the dealership for a few keys to be programmed and to get the factory keypad code for the drivers door... Anyway, they said at a certain mileage, the coils start going out, one at a time, and you get this intermittent misfire.
I can do the work, no problem... the factory replacement coils cost $42 each from Rock auto. There are several others to choose from and the Denso ones are only $23 each.
Anyone with experience have any advise? I hate to buy factory replacements if they're known to last only so long... but I don't have much experience in this department but maybe the Denso ones will last longer or be better?????
I hate to spend $230 on the cheaper ones then throw them away and spend $420... I'd rather just spend the $420.
Anyway, as usual, thanks for the advise FTE.
Dan
Denso ones More Information for DENSO 6736000
Motorcraft ones More Information for MOTORCRAFT DG508
So I have a misfire in my 2001 Excursion V10 only under load at low RPMs. Had the truck in the dealership for a few keys to be programmed and to get the factory keypad code for the drivers door... Anyway, they said at a certain mileage, the coils start going out, one at a time, and you get this intermittent misfire.
I can do the work, no problem... the factory replacement coils cost $42 each from Rock auto. There are several others to choose from and the Denso ones are only $23 each.
Anyone with experience have any advise? I hate to buy factory replacements if they're known to last only so long... but I don't have much experience in this department but maybe the Denso ones will last longer or be better?????
I hate to spend $230 on the cheaper ones then throw them away and spend $420... I'd rather just spend the $420.
Anyway, as usual, thanks for the advise FTE.
Dan
Denso ones More Information for DENSO 6736000
Motorcraft ones More Information for MOTORCRAFT DG508
Fleet Mechanic
Joined: Feb 2011
Posts: 1,812
Likes: 88
From: Thousand Oaks, CA
[QUOTE=Dcope17;16117569]... So I have a misfire in my 2001 Excursion V10 only under load at low RPMs. ... Anyway, they said at a certain mileage, the coils start going out, one at a time, and you get this intermittent misfire..../QUOTE]
My experience, so far, is yes the boots/springs start deteriorating after 50K+ miles and should be replaced regularly with the plugs.
I still have original coils at 152k and going strong.
First, find out which cylinder is misfiring and try changing just the boot/spring or move just the coil to another cylinder to see if the coil is bad or the boot.
My experience, so far, is yes the boots/springs start deteriorating after 50K+ miles and should be replaced regularly with the plugs.
I still have original coils at 152k and going strong.
First, find out which cylinder is misfiring and try changing just the boot/spring or move just the coil to another cylinder to see if the coil is bad or the boot.
Thread Starter
|
Freshman User
Joined: Aug 2014
Posts: 36
Likes: 0
Thanks for the advise... do you know how to check for which cylinder is misfiring? I heard about some code readers will tell you this info but mine is too simple and doesn't give me this info. I know I can take it in to a mechanic or the dealership... but I'd rather spend $300 on my own OBD tool than to pay a mechanic $300 to tell me which cylinder is misfiring.
Senior User
Joined: Feb 2015
Posts: 427
Likes: 5
From: Central Pennsylvania
Thanks for the advise... do you know how to check for which cylinder is misfiring? I heard about some code readers will tell you this info but mine is too simple and doesn't give me this info. I know I can take it in to a mechanic or the dealership... but I'd rather spend $300 on my own OBD tool than to pay a mechanic $300 to tell me which cylinder is misfiring.
I replaced my #6 coil with a Motorcraft and no issues. I think you will find that most on here will tell you to use Motorcraft coils.
Good luck.
Fleet Mechanic
Joined: Feb 2011
Posts: 1,812
Likes: 88
From: Thousand Oaks, CA
Our 2003 5.4L Exped had some very noticeable misfiring and was not setting codes.
I just got a BAFX 34t5 OBDII Scan Tool for Android - Amazon $22.
You would need an Android device, Samsung Galaxy phone or tablet for example, because the adapter uses Bluetooth and the Torque software is for Android only.
I'm not sure, but I think Iphones don't have Bluetooth.
There are Apple versions of similar devices/software available.
I have a Toshiba Thrive tablet I'm going to try connecting with using Torque (free basic) or Torque Pro ($4.95 Google Play).
To get "pending misfire" data I think I need the Pro version.
Fleet Mechanic
Joined: Mar 2013
Posts: 1,576
Likes: 41
From: Wyoming
I know this won't be popular but I got coils off ebay.
10 for $45 shipped free. Just could not pass up. If they potty out then maybe I will spend 4 or 500 for a set.
That's the cost one oem unit. Lifetime warranty for what that is worth.
5000 miles on them with no issues yet.
10 for $45 shipped free. Just could not pass up. If they potty out then maybe I will spend 4 or 500 for a set.
That's the cost one oem unit. Lifetime warranty for what that is worth.
5000 miles on them with no issues yet.
Trending Topics
Thread Starter
|
Freshman User
Joined: Aug 2014
Posts: 36
Likes: 0
I have an OBD2 scanner but there is no code. From what I have researched... I need a scanner that does "mode 6" to be able to look up the misfire that is not bad enough to throw a code.
Good thought on the spring and boot. Could just be that and not the entire coil.
Good thought on the spring and boot. Could just be that and not the entire coil.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Senior User
Joined: Feb 2015
Posts: 427
Likes: 5
From: Central Pennsylvania
Mine wasn't bad enough to have the check engine light come on or to be found in the fault log, but the torque app has a "pending fault" log that you will find it. Really does work well. I have used it in my f150, x, 4runner, and my wife's bmw - all with great results.
Cargo Master
Joined: Dec 2007
Posts: 2,822
Likes: 0
From: Minnesota
I was having misfire issues that wouldn't throw codes and was driving me NUTS! Finally while backing my 10K lb camper up our driveway, it finally missed bad enough to throw a code for misfire in #s 1 and 9. Replaced with Motorcraft coils (which came with the boots/springs). Ran great for a while, then a very intermittent miss. Figured at 200K it was time and replaced the other 8. Now has 240K with no more issues!
Thread Starter
|
Freshman User
Joined: Aug 2014
Posts: 36
Likes: 0
What is the "Torque app" you speak of to see the pending fault? Am I on the right track with the code reader and its ability for "Mode 6"?
Fleet Mechanic
Joined: Feb 2011
Posts: 1,812
Likes: 88
From: Thousand Oaks, CA
Download it to an android device that has bluetooth.
There are a number of good OBDII adapters available that plug into the OBD connector which will connect thru bluetooth to the android device.
The Torque Pro app should be able to let you access the pending faults to check for misfires before a code is set.
It can take a lot of misfires before a code is set.
It can also look at the O2 sensors data to see if one of them is getting old and out of spec.
Any temp sensor data on your specific vehicle should be available, too.
Google the app, there are several Youtube videos and lots of people using the app.
Thread
Thread Starter
Forum
Replies
Last Post
ZEvans
1997 - 2006 Expedition & Navigator
27
Mar 3, 2015 06:57 PM