1997 F150 misfire


Old 01-10-09, 08:43 PM
Thread Starter
Join Date: Aug 2004
Posts: 59
1997 F150 misfire

1997 F150 5.4L Triton V8 automatic.When driving with the rpm's between 2000-3000 engine seems to misfire.If I step on gas or let off it goes away.Can any one help? Thankyou.
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Old 01-11-09, 06:23 AM
Join Date: Jun 2008
Location: Eastern Georgia
Posts: 486
Check your spark plugs and wires, that kind of miss can be a bear to run down.
Old 01-11-09, 01:56 PM
Speedwrench's Avatar
Join Date: Apr 2008
Location: Oklahoma
Posts: 1,698
if i remember correctly that engine has the coils mounted directly over the plugs, you very likely have a plug going bad or a coil starting to go out. according to some of the mech's i have talked to because it is such a bear to change plugs most people don't and when the plugs start to break down it causes the coils to go out.

life begins when the kids leave home and the dog dies
Old 02-05-09, 05:42 PM
Join Date: Feb 2009
Location: ohio
Posts: 2
Thumbs up goodluck

I have heard of this problem with other Ford triton engines. I knew someone who had a similar problem only to find out that he had a plug blow out of the head going down the road. His problem started out as a miss. Ford does not acknowledge this problem and will not stand behind it. Be careful if you change the plugs they can snap off in the head. The only fix is to helicoil the head or replace it.
Old 02-06-09, 06:40 AM
Join Date: Apr 2006
Location: Floriduhhhhh Us of A
Posts: 611
A good scan tool capable of accessing misfire data can pinpoint which cyl is at fault. I'd want to change the plugs and probably the coil on the misfiring cyl.
Never had a problem with removing plugs on this year......but wait till you get to the later model 5.4's with the redesigned plug/cly head........removing plugs there is a brutal nightmare

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