aloha_hawaii

Hi everyone just recently my 97 4.6 f150 has been running super rough!
i plugged in the obd2 and code p0320 and p0307 came up.
i dont know where to start but heres a few symptoms of whats going on.
rough idle in drive, if in park it seems to be less rough, but still rough.
going 1,200 rpm on the freeway its rough. please help!! stock motor by the way!

charliedyal

Replace your coil packs, wires, & plugs then report back

Edit: do not get cheap wires!

charliedyal

Btw, look up p codes & diagnostics in the stickies.

aloha_hawaii

i wanted to see if anyone had the same problem cause i been looking all over no answer..thanks anyways everyone.

aloha_hawaii

p0320 dosent show up on the sticky,po307 saays misfire cylinder #7

mksmth

P0320 Ford - Ignition/Distributor Engine Speed Input Circuit Malfunction

what i found with google.

I agree, change coil packs plugs and wires. I used motorcraft on my old 97. it started having a bad day and after changing those is ran like a champ. #4 was always my issue.

charliedyal

320 is ignition/distributer input signal. But I'd bet it's going to relate to the 307, misfire cylinder 7, code. If those coils are old, I'd go ahead & replace them. They're not much. Between them & your plugs & wires, you'll have replaced every common faulty component in your ignition system. If the skip persists, then start looking into the crank & cam positioning sensors. But I'd be willing to bet it won't come to that.

aloha_hawaii

Thanks everyone! I will try do that. My truck has high milage and I bought it used so its about time to change plugs wires n coil. Any tips on doing it? Best plugs? Changing spark plugs are pretty much straight forward right..

charliedyal

Motorcraft plugs, regular old autozone coils & ford racing wires. The wires will run you about $100. At least that's what I paid on ebay 7 years ago. BTW, after that truck got totalled I installed them on my step dad's 98 and they're still running today. Compared to 3 cheap sets of Xact & Bosch wires in 2 years. You get what you pay for.

nof3ar

I'm having same systems but my dash lights are coming on. You guys think it's the coils?