To replace the coils, all you have to do is disconnect the power source, which is just a plug/receptacle, then remove a small screw. You just pull it up then.
As far as testing which ones are bad, it depends on how bad they are - that is - if they have failed completely or if they misfire intermittently. Hard to find them when they only miss under load, or right at start-up, or just a few times during the day.
The dealers have a diagnostic procedure whereby they locate failures through a piece of equipment called a WDS (Worldwide Diagnostic System). Pretty good at it, too, and charge anywhere from $50.00 to $125.00 depending on location and your PR with them.
$280.00 just for coil replacement is pretty steep. I think you can buy a coil now for $40.00.
Oil pump, huh? Sorry to hear about your troubles. Did you buy the truck new? Do all your oil changes and such?
It was time to replace the COPs recently, I went with the Accel packs from Summit Racing, they came with the wire and boot at $27 each. I was seeing the classic shudder in overdrive at 1700 rpm, no codes, and the packs ohmed out. (I hate static tests on coils)
Easy part to replace, except the last 2 on the passenger side, but even those were not enough to make me say &^$(#j(@
So far about 1500 miles and I'm happy with the performance.
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.