Lost a little gas mileage at 83k
My 2004 Quad Cab 4X4 with a 4.7 lost a little gas mileage recently, I normally average around 14, but have recently been getting around 12. I still have original plugs, I will change those, is there anything else that I should look at replacing?
I also have noticed some rpm surging when I start the truck, will go from around 6k to around 12k. Thanks |
Are you using the air conditioner now? That will cause what you describe
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Your plugs should have been replaced a long time ago. What about the air filter? Transmission oil? Diff oils? Plug wires? Cleaned the TB? Fuel injection cleaner?
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Aye, air filter, all your fluids can help. Plug wires/coil packs are worth checking. Clean the TB and there's a chance new injectors would help. Try some cleaner through em first like weed said. Alignments don't hurt either.
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You have a 4.7 that will wind to 12K?! :) Yep - plugs, TB clean, filters, tire pressure, Sea Foam.
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