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jencarie
Novice
Apr 1, 2008, 2:08 PM
Post #1 of 7
(3712 views)
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2002 F250 Superduty
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I was driving Sunday and it just started running rough and sputtering. Turned around, went home and replaced plugs(double plat.) and plug boots that connect to coil pack. Replaced fuel filter and replaced pcv valve. Put inbottle of fuel injector cleaner, and test drove. Still the same problem. Ohmed out the coil packs and injectors, and they were all within range of one another. As I said its a 2002 F250 superduty 4x4 with 5.4L, auto trans w/overdrive. 125,000 miles, split between local and highway driving. It idles ok, misses once in a while at idle. Misses like crazy upon steady acceleration. If I punch it, it takes off like a jackrabbit, no misses felt. once I let off the gas to cruise, back to miss firing. Any ideas?
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Apr 1, 2008, 3:53 PM
Post #2 of 7
(3704 views)
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Re: 2002 F250 Superduty
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Check out for vacuum elbows gone bad on this engine. I don't recall exactly what engine but an Expedition came my way once and needed all of them! Soft and one with a full blown hole. Worth checking out,
T
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jencarie
Novice
Apr 1, 2008, 4:06 PM
Post #3 of 7
(3700 views)
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Re: 2002 F250 Superduty
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Thanks for your fast response. After dinner I'm going in the garage and check them out. I'll let you know what I find.
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way2old
Veteran
/ Moderator
Apr 1, 2008, 5:45 PM
Post #4 of 7
(3699 views)
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Re: 2002 F250 Superduty
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If it is the 5.4L 3 valve engine, Ford has an extended warranty on the injectors. Call your local Ford dealer with the VIN and they can tell you if it is covered. Or, if you wish, you can post the entire VIN here or send me an e-mail with the VIN and I can run it for you. Your choice. I think it is covered up to 150,000 miles. Not really sure on the mileage. I run Vista here at home and it does not play well with Ford's fleet site. Will look tomorrow when I get to the shop.
Being way2old is why I need help from younger minds
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jencarie
Novice
Apr 1, 2008, 6:20 PM
Post #5 of 7
(3698 views)
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Re: 2002 F250 Superduty
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Well, I checked the vac hoses and couldn't find any leaks. Thanks for letting me know about the warranty on the injectors. The vin is1FTNF21LX2EA43792. If I can't figure this out in the next few days, I'm just going to bring it in to the dealer.
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way2old
Veteran
/ Moderator
Apr 2, 2008, 5:45 AM
Post #6 of 7
(3693 views)
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Re: 2002 F250 Superduty
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I could not find anything on your particular vehicle. You need it hooked to a scanner thatcan detect which cylinder is missing and more than likely it will show up. Problem with that is usually only the dealer has the tool that can monitor the cylinders while you are driving. If you are close to Lexington, I can check it for ya.
Being way2old is why I need help from younger minds
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jencarie
Novice
Apr 2, 2008, 6:04 AM
Post #7 of 7
(3694 views)
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Re: 2002 F250 Superduty
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I can't tell you how much I appreciate the responses I've gotten. Just amazing! I'm in the south suburbs of Chicago, but thanks for the offer anyway. I'll bring it in to the dealer and see if they can't fix it. I'll post again when I know the cause of the problem.
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