F150 issue.

[mattb]

I have an '03 F150 Supercrew 5.4 that has a little issue going on. By the way,100,000 miles, and it still needs the big service due.
A few weeks ago, I started to get a little "miss" when the motor was under a load (up hills, etc). It seemed to get progressively worse over the last couple of weeks and 3 tanks of gas later.
I thought it seemed to start the day after filling it up, so I was under the impression that there could have been some water in some gas. (It had been raining recently before the filll up.)
Well, this morning on the way to work, it ran perfect. I'm curious if any of you have had any issues like this? Where would you start if/when it acts up again.
Do you think it was an injector? Plugs? Plug wires? O2 sensors?
How do any of you that have swaped these parts on your truck out rate the "Workability" of the motor? Is it a major pain to get in and work on it? I havent' even really had to crawl around in the motor compartment besides doing fluids.
Does anyone here know what the 100,000 mile Ford Service includes? Typical cost too?


Thanks

[matt_helton]

those motors are notorious for having coils go out. its a coil on spark design so each cylinder has its own coil. its usually either the coil itsself of the boot that goes down in the head to the plug.

and its usually the #7 cylinder which is the hardest one to get to. lol

[steveG]

You might check the rear spark plugs and boots. Some of those like to loosen up and trap moisture between the boot and spark plug. While you're there, check for coolant leaks to. There's a heater hose above one of the plugs that can leak coolant onto the plug and on-plug coil. Plugs on that truck should have been replaced at 60k under normal use. If you drive your truck hard I would do them again at 100k. When you do the plugs, be safe and replace all the spark plug boots.

As far as a 100,000 mile service, if you've kept up to date with the service on the truck it shouldn't need anything more than an oil change and inspection(if it's due). Major services are supposed to be done every 30,000 miles, so if you stuck with that you've only gone 10,000 miles since then. If you haven't and plan on keeping the truck, replace (flush) ALL the fluids, clean the intake, flush the injectors, replace the fuel filter, and the air filter if dirty, replace the pcv valve and replace the serpentine belt if necessary. You should also check all the hoses. Hoses should be replaced a 90,000 miles under normal driving. Of course, look the rest of the truck over to check for other needed maintenence items or repairs needed. That was just a quick overview of what should be done every 30k, I may have missed a few things.

[mustafa]

I agree with Matt. I have experienced the same problems with 2001 F250. I have replaced 6 of the coils so far and they're not cheap. I had the same hesitation problems that you're having.

[Superfab]

If you are concerned moisture might be your problem, remember to use a little die-electric grease (aka electric tune-up grease) on the inside of the boots. Keeps the moisture out and the boots from sticking when you need to remove them. Also a bottle of injector cleaner once a month won't hurt either.

[IDRA_CRB]

I had five of the original COP's go defect before I wised up and replaced all of them with Motorcraft units. Found a guy on Ebay that had eight of them for a smokin' deal.

I had two of the originals go out south of Loreto during the 1000. Amazing how well the computer was at power balancing to make up for their loss.

Best was five days before last years 1000 I was stricken with the "#4 cylinder spark plug blow out." Bought me a brand new head since Ford feels customers are being unreasonable expecting all the plugs to remain in their assigned locations.

http://www.consumeraffairs.com/news04/2005/ford_spark_plugs.html

Reese
2001 5.4

[Josh_K]

Ya I had one developed a little miss and 90k and by the time I got to the dealer 2 weeks later it had 3 coils out and would barely run. I fixed it and bought a diesel.

Oh ya, dont have the dealer repalce the plugs either. The plugs my need it but dealers charge about $450 just in labor to replace plugs.

Josh

[shamrock]

How hard have you guys worked your trucks . I have a 2001 F150 Supercrew with the same problems and have been told it's because of all the towing . I know I am overworking my truck , but how about the larger ones ?

[Josh_K]

Na thats bull. I never worked my f150. My usual load was a 5800 lbs class 8, 2200 lbs trailer, and about 1k lbs of stuff in the bed. Whats that? A gross wt of about 15K...

It never did stop well and I never had brakes on my trailer either. Ha.

My superduty goes to the desert with about 22k gross and I still dont have trialer brakes.

Josh

[IDRA_CRB]

Mine is a 2001 Supercrew. It never hauled more than a few tires, ice chest and TONY TELLIER'S huge ego.


Reese

[Ramsey_ElWardani]

How did you get all that and TT’s E to fit? I hope it didn’t ruin it.