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Hammer Time
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Sep 17, 2012, 3:07 PM
Post #51 of 79
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Re: 05 expedition
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It's probably going to be a combination. They work in series. The coil for sure and if the plugs have over 70K, replace all of them at the same time.
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Discretesignals
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Sep 17, 2012, 5:03 PM
Post #52 of 79
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Re: 05 expedition
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Have fun changing the spark plugs. Don't forget to buy an extraction tool for the ones that break off.
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Hammer Time
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Sep 17, 2012, 5:04 PM
Post #53 of 79
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Re: 05 expedition
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This isn't the 3 valve engine that has plug problems. They will come out OK but they are hell to access the rear ones.
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Discretesignals
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Sep 17, 2012, 5:07 PM
Post #54 of 79
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Re: 05 expedition
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Oh ya it is. It's one thing you'll never forget. All the 3V 5.4L triton engines i've run into have the HT revolutions.
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(This post was edited by Discretesignals on Sep 17, 2012, 5:09 PM)
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Hammer Time
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Sep 17, 2012, 5:08 PM
Post #55 of 79
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Re: 05 expedition
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Also, make sure they are torqued properly because this engine is known for plugs coming loose and taking the threads with them.
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Discretesignals
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Sep 17, 2012, 5:14 PM
Post #57 of 79
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Re: 05 expedition
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This one is the "5" engine. 5.4L 3V with VVT and has those goofy ass plugs where the shell busts off. Believe me.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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Hammer Time
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Sep 17, 2012, 5:17 PM
Post #58 of 79
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Re: 05 expedition
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I'm very familiar with the plug and the issues. I have the extractor and have done many but I didn't think this truck has that engine. The pictures of the head on Alldata show 2 valve.
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Discretesignals
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Sep 17, 2012, 5:22 PM
Post #59 of 79
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Re: 05 expedition
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Look at the spark plug application. With a 129,000 miles, if they are original, are going to be a lot of fun. I've tried doing an induction service and letting them soak overnight using GM top engine cleaner, but I still ended up having breakage. If they don't squeal coming out, it's extractor time.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Sep 17, 2012, 5:36 PM)
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nickwarner
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Sep 17, 2012, 9:00 PM
Post #61 of 79
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Re: 05 expedition
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Get the tool before you touch this and be ready for pain. What I would do is with the engine somewhat warm (as in not dead cold in the morning but if you touch an exhaust manifold you aren't screaming obscenities either) put your socket on the plugs and turn them 1/8 turn each. Now shoot a ton of PB Blaster into the plug wells and walk away for at least an hour. Overnight would be better. By turning that little bit you are trying to keep the plug off its tapered seat and allow the penetrating oil to soak in as far as is possible. That trick has made things a lot easier, but you still have to plan on at least a couple of them breaking off in there. If you called around for estimates on a tune-up for this any shop that knows what they're talking about will tell you they can't even quote a price until all of the plugs have been removed. Maybe one time out of 10 all of them come out, 3 times out of 10 only one or two breaks off, 4 times out of ten half will break and 2 times out of ten every last damn one will fight you. That extractor tool is worth its weight in gold.
Now you know why mechanics hate engineers. We have to mop up the designs they though were a great idea and they make way more money than we do.
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mik05
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Sep 19, 2012, 2:34 PM
Post #62 of 79
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Re: 05 expedition
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Not pain for me fellas pain for the shop that's going to do it for me!!! I'd rather pay for it than risk any trouble. Using my head and admitting that I couldn't do this on my own will save me in the long run.
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mik05
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Sep 29, 2012, 3:57 PM
Post #63 of 79
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Re: 05 expedition
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Had the plugs done nd the idling has sooo smoothed out but wonder why it seems that sometimes it takes a second for it to go when stepping on the gas? Then at other times it seems that with my foot at consistant pressure it feels like it speeds up and down
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Discretesignals
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Sep 30, 2012, 9:19 AM
Post #64 of 79
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Re: 05 expedition
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Would be interesting to scope the APP and TPS sensor when it is doing the surging thing while your holding it steady. I've noticed on some electronic throttle control systems there is a delay. Might be from the way the engineers had programmed the TAC system or the delay from the time it takes for the computer to calculate the inputs to control the outputs. Then on some other vehicles the throttle response is too sensitive such as the Scions. Most of the time if there is a problem in the TAC system where you press on the accelerator and the computer doesn't detect the correct throttle position, it will flag a code or go into some type of forced limit mode.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Sep 30, 2012, 9:24 AM)
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mik05
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Oct 26, 2012, 5:10 PM
Post #65 of 79
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Re: 05 expedition
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Thank goodness I found my old post. So I took it to the garage and the man changed the plug in cylinder 4 because he said it was the only one needing to be replaced. Worked great for about a month and now well not so good! Driving home from work Wednesday I felt a slight jerk in the car but just for a split second and no more that day. Next day slight jerk combined with slight roughness in idling once again just for a split second. Was driving about 55 uphill and first day then level ground second day . So confused please help
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Hammer Time
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Oct 26, 2012, 5:13 PM
Post #66 of 79
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Re: 05 expedition
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Nobody changes one spark plug. That's nonsense.
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mik05
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Oct 26, 2012, 5:17 PM
Post #67 of 79
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Re: 05 expedition
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Well that's exactly what I thought but he told me that due to the way the air conditioning and heating lines are run on this motor the condensation from the lines drips into the pocket the plug sits in and they have an ongoing problem with this particular plug.
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Hammer Time
Ultimate Carjunky
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Oct 26, 2012, 5:21 PM
Post #68 of 79
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Re: 05 expedition
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That's just BS. The condensation is nowhere near those plugs. It's at least 6 to 8 inches to the side. The do have a known problem with the plastic manifold cracking at the heater hose fitting in that back corner causing coolant to fill the spark plug hole and if that was the case and all he did was swap one plug, he resolved nothing. It will need a new intake manifold and the rest of the plugs.
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mik05
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Oct 26, 2012, 5:30 PM
Post #69 of 79
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Re: 05 expedition
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Well I have pretty much giving up on the is guy anyway because I don't have the time and definitely not the money to play games with this problem. Haven't even made the second payment yet and it it really sucks that I can trust my paid for 95 dodge ram more than a newly acquired 2005 expedition. I would really like to be able to drive it on a family trip and not worry about it
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Discretesignals
Ultimate Carjunky
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Oct 26, 2012, 7:29 PM
Post #70 of 79
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Re: 05 expedition
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Its probably an ignition coil getting ready to go bad. Done so many of them. With a scope you can current ramp all the coils from a single fuse in the fuse panel to see which ones are shorting out in the primary coil. The hard part is trying to figure out which one it is. If the misfire isn't bad enough it won't set a code. Mode $06 on a high end scan tool is the only way to check misfires on Fords unless you can get hold of the factory scan tool.
The intake on those didn't have the coolant fitting problem.
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mik05
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Oct 26, 2012, 11:37 PM
Post #71 of 79
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Re: 05 expedition
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Man I wish u lived close by ! Maybe it would already be fixed instead of all these Guinea pig games with the local mechanics! I only have one other guy that was recently reccomended to me buy an older man at work who has the same vehicle. I have set up an appointment but this mechanic told me on the phone that the other people could have just checked the side of the computer that only shows those codes that show up when the dash lights come on. Instead he told me that his system checks everything because sometimes if a miss fire or hesitation isn't bad enough it won't throw a code and some system checks will not show the real problem. Does this sound realistic? I didn't know there was more than one type of system check. He also said he would pull one of the older plugs to see if they were the original because if they are he strongly suggests that whether they are the problem or not I have them replaced due to the fact that my car has 129000 miles on it. Something about the elements or or something like ( not sure the exact word he used can't remember) can start to seperate and you won't get the same effect as a newer plug and even said that he has seen some plugs that were ignored too long and actually blew apart. Sounds comforting huh?!! What u think?
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mik05
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Oct 26, 2012, 11:47 PM
Post #72 of 79
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Re: 05 expedition
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Not to sound ignorant... though I am in these cases... what's the difference between an ignition coil and the coil pack that actually go on the each individual plugs on these motors
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Hammer Time
Ultimate Carjunky
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Oct 27, 2012, 3:05 AM
Post #73 of 79
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Re: 05 expedition
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Your truck doesn't have a coil pack. It has COP which is individual coils for each cylinder.
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mik05
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Oct 27, 2012, 8:42 AM
Post #74 of 79
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Re: 05 expedition
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Right sorry didn't really know what they were called. Are they the same as an ignition coil or is that something all together different? Oh yeah what do you think about what this guy said? Does it sound like he knows what he's talking about? Remember he's NOT the same genius that told me about the air conditioning lines and that it was a good thing to only replace the one plug that was bad
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Discretesignals
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Oct 27, 2012, 8:50 AM
Post #75 of 79
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Re: 05 expedition
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Regardless, you need to find out what cylinder(s) is skipping. Then you need to change all the spark plugs and coil boots. Replace which ever coil(s) is causing the misfires. You don't change one spark plug when the rest are worn out. If you have water down in a hole, determine where the water is coming from and fix it.
You should take it to a shop that knows what they are doing.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Oct 27, 2012, 8:51 AM)
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