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2004 - 2008 Ford F150 General discussion on the 2004 - 2008 Ford F150 truck.

Off Road Worries

Old 01-27-2010, 11:15 PM
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a good way to check your alternator is to take the positive battery cable off while your truck is running and if it stays runnig your alternator while be fine under a load unless u have a lot of off road lights. when it comes to your runnig lean it could be a numerous of things i doubt your alternator would cause that but ive seen stranger things
Old 01-28-2010, 01:46 AM
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Originally Posted by chris351
a good way to check your alternator is to take the positive battery cable off while your truck is running and if it stays runnig your alternator while be fine under a load unless u have a lot of off road lights. when it comes to your runnig lean it could be a numerous of things i doubt your alternator would cause that but ive seen stranger things

sounds like a good way to cause damage to the pcm or any other electronic equipment that would be sensitive to any power spikes/fluctuations. the battery absorbs those normally.
Old 02-01-2010, 02:43 PM
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I took your guys' advice, as well as replaced the fuel filter. Turns out they should be switched out every 15000 miles - good to know. Seems to be all good. Thanks again for all your help.


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