P0105 - Replaced wire.. coil pack or injector?
I have a misfire on my #5 cylinder in my 1998 F-150 4.6L V8. It sorta was coming and going.. at times it seems like it just wasn't firing, then every once in a while it'd just miss.
Well, I've replaced the spark plug wire, and it seems to have helped slightly, although I'm not sure - since it's semi-inconsistent. Definitely didn't 100% fix it.
I recently (10k miles ago) replaced all my plugs with Double Platinum Motorcraft or whatever brand it is now.
I tried changing out the spark plug (same model) and it still missed.
I'm wondering, is this is a problem with my coil pack? This 4.6L has two coil packs.. each one has 4 caps on it.
I bought a new one for $57, and am wondering if I should try putting it on? Once I put it on, I don't think I'll be able to return it.
Is there anyway for me to deductively identify what the problem is? Injector?
Additionally.. the miss either doesn't happen or is less noticeable at higher RPMs - if this helps any.
Thanks for any assistance.
Last edited by anxvariety; 10-26-2004 at 08:06 PM.