2004 - 2008 F1502004, 2005, 2006, 2007 and 2008 Ford F150's with 5.4 V8, 4.6 V8 or 4.2 V6 engine
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Changed the Fuel Filter.
Changed the Oil plus Oil Filter (Of course).
Cleaned my K&N Air Filter.
Replaced my stock 4 year old battery w/ a Heavy Duty 850 CCA.
Added an Additive to my Fuel to remove moisture.
Instant change! Start-up is instant.. I've started the truck 5 times and no more shaking needles... So far, the problem was the battery as I was told by many of you. Also, no more diesel sound.. Thanks!
As far as the jumping needles go, I'd say you're due for a new battery.
My first thought as well.
My '06 did the same "dash needle dance" and buzzed at the same time, a couple months ago. It still had the original build battery from AUG '05, so it had lasted a good while. I didn't know how slow it was cranking until I installed the new battery. The new battery cranks like the engine is about to jump out of the truck!
'06 F-150 STX, 4x4 4.6, going strong
'92 F-150 XLT, 4x4 4.9, killed by cell phone driver in 2010, RIP
'73 K-20 Custom, 4x4 350/350 My 1st truck, sold, wish I still had it
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