I have a exped. 5.4 misfiring on 2 and 3 the coil are good what else could it be

Hello sir. The EV icon is flashing on my scanner. Stopped at Advance and the girl there suggested new gas cap. The one on there looks original and for $13 i figured its worth a try. Any other ideas?

I was reading a post that you had commented on about a shudder at 40mph due to faulty coil pack issues. I am having the same shutter issue around 40mph with mine and realize it is probably a coil problem. This may be a stupid question but my battery is really weak and I am trying to delay getting a new one. I read somewhere in here about low voltage at the coil cause it to miss read could a weak battery possibly be causing this problem? I never noticed the problem before my battery was weak.

Hi Bluegrass, Hope I am not imposing but I saw one of your trans. answers and thought you might be able to help me. Whenever I shift from park to reverse i get a delay and an idle surge of approx. 200-300. rpm. If it is cold it is a little more. Then it kind of clunks into gear. It does the same going to drive but the rpm increase is less. Is this trans or engine. It is a 4R70W. F-150 4x4 5.4L. When driving all operations seem normal. Pulls strong through all gears, shifts up & down normally. Just had fluid & filter replaced.

FrankG3079
Thanks in advance.

I was wondering if you had any experience or knowledge about exhaust for a 2000 f150 4.6 v8. I have no idea what would sound good on this model

Wow, looks like you get a lot of tech questions PMed to you.
Do you mind if I pick your brain too. Let me know.
Thanks darren

Hello. Thought I"d ask you about the P0401. I have a 99 f150 with 4.2 v6 aluminum plenum. i guess from reading I should check the EGR ports I see people saying "behind" the EGR. I just see 2 legs that go to the lower intake manifold. How do I get to the EGR ports and where are they?
Thanks

Hey buddy thanks for trying to guide me on my 4.6l to 5.4l question. What area of WI you from?

Hey i've been reading your answers to the various bucking jerking posts. My truck jerks horribly and i alsways suspected a misfire. However i only have a single coil. Would that still be doing it?

Well, I am being cautious not to do more damage. I suspect that the coil connecting plug is faulty and not return power to the coil on plug. Problem is no dealer can locate one these connectors. One even wanted me to buy entire harness but still can't find it.

So far it continues to throw up code P0 351.