Coil & boot assembly
Thread Starter
|
New User
Joined: Jul 2003
Posts: 8
Likes: 0
Coil & boot assembly
I really need help! I have a 1999 E250 conversion van with about 155000 miles. I just had to replace one of the coil and boot assemblies. How many are there? Are they part of the emissions system? The van still runs rough (Missing badly) Are these necessary? Can you bypass them? Why does it cost so much to replace them? Can I do it?
Senior User
Joined: Mar 2003
Posts: 116
Likes: 0
Coil & boot assembly
LOL. funny guy! Cost depends on where you buy them and if they are OEM or not. You likely have 8 of them and they fire the plugs, not part of the emissions controls. Yes, they are necessary... You can't bypass them if you expect to drive the van and they cost so much to replace because the parts are expensive and often hard to get at. From the tone of your post you likely don't have the ability to change them yourself. Sorry!
Moderator
Joined: Dec 2001
Posts: 22,436
Likes: 17
From: Louisville,Ky.
Coil & boot assembly
In 99 did they use coil packs still or coil on plug set up? If it has coul packs it would have 2 of them. 4 cyl each. Did you have any codes read off of the computer to suggest where this miss is coming from?
Jimmy
Jimmy
Thread Starter
|
New User
Joined: Jul 2003
Posts: 8
Likes: 0
Coil & boot assembly
Cute, hugepettyfan. LOL, I'm a girl! Does that explain it? The dealer told me there were 3 of the coil packs. It gave them an E29 when they hooked it up to the computer and then they said the code was cleared after the coil pack was replaced. Also, when they were done with the coil pack replacement at $353.00, the van still rode very rough. I called back and they said they couldn't do anything unless the engine light came on. Does this mean that a person has to ride rough, real rough, in a vehicle until the engine light comes on?
Senior User
Joined: Mar 2003
Posts: 116
Likes: 0
Coil & boot assembly
Oh, that explains it! :-) From your description of "coil and boot" it sounded like individual coil-on-plugs. You have come to the right place for help with this, no harm being a girl! I found that with my truck it would have a loss of power and a light miss without setting a code, this miss was intermittant. Did you have the vehicle in a Ford shop or independant. I've learned here that there are tests that can be done to locate which cylinders are missing without it setting a code. Good luck! (No hard feelings I hope!)
Trending Topics
Thread Starter
|
New User
Joined: Jul 2003
Posts: 8
Likes: 0
Coil & boot assembly
It was a Ford shop. It is a pretty heavy miss, although it doesn't do it all the time. Of course, no hard feelings. I didn't have to tell you I'm a girl. Do you know what the tests are called that identify the cylinders without setting a code? Thanks. Linda
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Hotshot
Joined: Aug 2002
Posts: 12,679
Likes: 15
From: BC, Canada
Coil & boot assembly
You need to have a power balance test done. A Ford dealer can do that with their WDS scan tool.
A E29 isnt a normal trouble code. I dont know where they came up with that.
What size engine do you have in your van? There is a "coil on plug" assembly for each cylinder if it is a 5.4 or 6.8L.
A E29 isnt a normal trouble code. I dont know where they came up with that.
What size engine do you have in your van? There is a "coil on plug" assembly for each cylinder if it is a 5.4 or 6.8L.
Thread Starter
|
New User
Joined: Jul 2003
Posts: 8
Likes: 0
Coil & boot assembly
Thank you, Racerguy. I'm supposed to go in to the Ford dealership here on Monday. I guess I can request to watch when they put the van on the computer. I think the van has a 5.4 in it. I will also mention the WDS scan tool. I just don't want to have to go through this 7 more times! Also, they told me that this would take care of the problem when they replaced the first one, but the engine still missed badly. Then the light came on while we were out of town, but only stayed on for about a day. When we got back in, we called and told the dealership that the van was missing and that the light came on, but it was off now. They told us there was nothing they could do without the light on. That was about 6 weeks ago and we've put up with the missing all this time. Now the light is on again. We travel about 1500 miles a week and this is getting old and uncomfortable with the missing all the time. If you have any other info, please let me know. Thanks so much for your reply. Linda
Hotshot
Joined: Aug 2002
Posts: 12,679
Likes: 15
From: BC, Canada
Coil & boot assembly
Even if the light went out there should still be a trouble code stored in memory. They can retrieve that and it will probably be a good clue as to the problem.
Their WDS should show which cylinder is misfiring and from there they should be able to figure out if it needs a spark plug or coil or whatever. The power balance looks like a graph. It shows basically how much each cylinder is contributing. If there is a dead one it will be very low on the graph compared to the rest of them. The power balance test can also be done on the road too in case it doesnt show up in the shop.
Let us know how it goes
Their WDS should show which cylinder is misfiring and from there they should be able to figure out if it needs a spark plug or coil or whatever. The power balance looks like a graph. It shows basically how much each cylinder is contributing. If there is a dead one it will be very low on the graph compared to the rest of them. The power balance test can also be done on the road too in case it doesnt show up in the shop.
Let us know how it goes
Thread Starter
|
New User
Joined: Jul 2003
Posts: 8
Likes: 0
Coil & boot assembly
Thanks, guys! I feel like I'm at least armed for the battle. If I can ever help you with anything legal or anything regarding photography or sterling silver jewelry, let me know. Linda
Thread Starter
|
New User
Joined: Jul 2003
Posts: 8
Likes: 0
Coil & boot assembly
Hey, Racerguy and hugepettyfan! Thanks for your help. I really felt like I was really armed when I went in to the dealership. I told them that they had told me that there were 3 coils and that I knew there were 8 and that I wanted them to run the test on them to see which one(s) were bad. I also told them that they should have done the test when the light was off, rather than make us drive the van nearly 10,000 miles with it bucking around and running rough. Well, the service manager, who is a nice guy, but is just marking time until retirement was really taken aback, but he went and got the mechanic. He told me that there were 8 coils and that they had replaced #4 last time and that they would do the test to see which one it is now, if any. They found out that #5 was bad. They replaced it and the van is running very smoothly. Hey, guys, I really am very mechanical. I've changed the oil and can rewire a house. Don't you guys think I can change out one of these things if it goes bad? You can be honest. Again, thanks for the knowledge and wisdom. Linda