Re: How To Replace the #5 coil for a 2001 Ford Expedition
If you know that it is the coil. changing it is really easy. you are going to need a 10mm socket with extention. a 7mm socket for the coil mount bolt. first leading bank is number 1-4 front going back( passenger side) driver side is 5-8. 5 is the front cylinder on drivers side. remove the power stearing bracket 3 10mm bolts. coil is right underneath. intake can be removed if you feel is needed. after that there is a 7mm bolt remove the bolt. disconnect the 2 pin connector. pull to remove the coil. the boot may come off if coil hasn't been moved in some time. use pliers to remove it if that happens. blow out spark plug hole with shop air. installed new coil. install 7mm bolt. plug connector in. reinstall power steering mount bracket. good to go.
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They eventually wear out. But if you try to replace parts, it will not fix the ongoing problem. You really need to change it to coil suspension. The problem with air ride is the bags will eventually go bad and it cost more to replace them than air bags in the steering wheel. I was lucky. My Expedition had already been changed over
Had same problem with 1999 ford ranger i worked on and it was a cracked valve. Might want to preform a compression test on that cylinder. hope this helps and if so Please leave rating on this post and good luck.
You obviously have access to a code scanner so there are some things you can rule out and possibly fix the concern. Number six cylinder on the Exdedition is on the drivers side of the engine, second cylinder from the front. To do a backyard diagnosis, you will need to clear the code. This is easily done by disconnecting the negative battery terminal for 5 minutes then reconnnecting (I'll explain why). Next, remove the ignition coil on the # six cylinder. It is located on top of the engine and has one connector going to it and one small bolt holding it down, and usually black in color. You are marking it so that you don't mix it up. Now remove the # five ignition coil and install it where number six was. Put the marked coil in the number five hole. Connect both connectors.
Now drive the vehicle and allow the engine lamp to come on or to skip (misfire) a few times. Scan the vehicle for codes. If the code changes to a P0305 or # five misfire, then you know the ignition coil is bad. Replace the marked coil, disconnect the battery again to clear the code, then drive the vehicle and verify the repair. Other concerns could be a spark plug, injector, base engine concern or wiring. Good luck, let me know if you need more help :o)
Coils are the most common cause of misfire, especially after rain.
Some coils? how did you know which ones? You need to replace allof the spark plugs and the coils that may be bad. its too expensive to guess, take it to a shop that can tell you which cylinders are misfiring. the coils may not be what the problem is.
a very common problem for the 5.4 fords is the coil packs going bad. normally misfires once heated up and under slight load ( in overdrive going up a grade) if the check engine light is on, it can help pinpoint which cylinder is misfiring. if plugs haven't been replaced within last 50-60k miles, plan on replacing plugs, and usually the coil pack that goes bad is one of the rear ones, but impossible to tell without a scan tool. if you don't own one, take it to a shop