#2387361 - 05/06/11 11:37 PM
Mechanic ?-Ford F150
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tnmedic2647
Spike
Registered: 04/06/09
Posts: 81
Loc: knox,tn
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2002 F150 4.6 is driving me insane.
At 40-50 mph truck is jerking and feels like tranny is slipping. Take it out of OD, let off gas, or give it gas and it runs great. No check engine light or codes showing. I've taken it to 2 transmission shops and both say its not the tranny or OD, but an engine miss. Replaced the spark plugs today and now worse than it was. I read on the F150 forum that the coil on packs fail and are a common problem. Well I found a pack of 8 on ebay for 90.00 shipped and plan to replace all of them next week. Any other suggestions or FORD owners experienced this?
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#2387363 - 05/06/11 11:44 PM
Re: Mechanic ?-Ford F150
[Re: tnmedic2647]
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rebs1
4 Point
Registered: 08/26/09
Posts: 319
Loc: Tn
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Same thing happened to me and it turned out I had 5 coils bad. They said they had never seen that many out at one time. Anyway- had it fixedmand haven't had a problem since.
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#2387364 - 05/06/11 11:44 PM
Re: Mechanic ?-Ford F150
[Re: tnmedic2647]
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vanleerbuckbuster
8 Point
Registered: 10/04/09
Posts: 1138
Loc: Dickson, Tennessee
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coil pack would be a good place to start
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#2387366 - 05/06/11 11:47 PM
Re: Mechanic ?-Ford F150
[Re: vanleerbuckbuster]
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Locksley
16 Point
Registered: 10/23/01
Posts: 19450
Loc: Antioch TN
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interesting
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#2387369 - 05/07/11 12:04 AM
Re: Mechanic ?-Ford F150
[Re: Locksley]
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southernhunter
8 Point
Registered: 09/08/10
Posts: 1228
Loc: alabama
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i have a 2003 fx4 150 . the same thing happen to my truck i thought trans was going out .i just kept driving it after about 2 months the check engine light came on and it was a coil pack on the drivers side. that makes two that has went out. i am saying that is the problem. i heard ford could read codes with their machine with out the check engine light on but it will set you back about 80 bucks . a coil pack is only 20 or 30 bucks if i rememebr right . good luck
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#2387380 - 05/07/11 05:08 AM
Re: Mechanic ?-Ford F150
[Re: tnmedic2647]
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strutandrut
Non-Typical
Registered: 07/03/06
Posts: 28621
Loc: signal mountain
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Thats a good price on those packs.
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#2387382 - 05/07/11 05:23 AM
Re: Mechanic ?-Ford F150
[Re: strutandrut]
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jb3
10 Point
Registered: 02/23/09
Posts: 3314
Loc: Burns, TN
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same thing happened on my, coil pack.
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#2387412 - 05/07/11 07:22 AM
Re: Mechanic ?-Ford F150
[Re: jb3]
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Big Gun
16 Point
Registered: 09/02/00
Posts: 10427
Loc: Bartlett
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On my 2000 F-150 I had a very similar problem. Turned out to be a coil pack and EGR valve. Both very easy to replace on the 5.4 engine.
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#2387416 - 05/07/11 07:36 AM
Re: Mechanic ?-Ford F150
[Re: Big Gun]
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Big J
16 Point
Registered: 03/10/06
Posts: 11545
Loc: Joelton
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Does the 96 Bronco have coil packs?
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