5.4L Error Code P0316

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Oct 29, 2004 | 10:44 PM

whalerron

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Joined: Jan 2003

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From: Baltimore

5.4L Error Code P0316

3 weeks ago, I started my 2002 Econoline after it had been sitting unused for 3 very rainy days. It has a 5.4L motor with about 48K miles. It was relatively hard to start and when it finally started, it ran very rough for about 2 minutes. I never had the problem before that and it hasn't happened since.

Last night I scanned the system and found an error code P0316 was reported.

P0316 = Engine Misfire Detected on Startup (First 1000 Revolutions)

Does anybody have an idea as to what caused this problem?

Thanks.

Oct 30, 2004 | 12:17 PM

beer boy

Senior User

Joined: Mar 2003

Posts: 397

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From: nova scotia, canada

rainy days

i've heard of the 5.4l's with the "cop" set up devolping moisture under a coil. if it hasn't again that is most likely the problem. to prevent this you could remove each coil and apply dielectric grease to the tops of the plugs. but on a van this isn't an easy task.

Oct 30, 2004 | 09:17 PM

whalerron

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Joined: Jan 2003

Posts: 828

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From: Baltimore

Thanks. I was wondering about the moisture issue because not only had it been rainy but it was also very humid to the point of being foggy during that time. I had though the newer cars were not prone to ignition problems caused by moisture but I guess this proves me wrong. I will make not of the error code and clear it. Then I will check it every so often to see if it comes back.

- Ron

Nov 2, 2004 | 11:23 PM

brhanso

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Joined: Nov 2004

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I had the same problem a week ago. It got real Foggy and rainy out. When I scanned the codes , I had a P0304 and a P0316. I haven't had it since. But I've heard from others who had a smilar problem , and the coils were getting wet. Mine is still under warrenty, so I'm thinking of taking it back to be fixed.