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  #1  
Old 02-09-2011, 11:29 AM
shadyroids shadyroids is offline
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Unhappy Bad gasmileage

ok guys i have a ranger with the 3.0 in it. i usually get around 15mpg in the winter, and 18-19 in the summer. well right now i have been getting ridiculously low gas mileage. im gettin like 11-12mpg , my cat is clean, and my tire pressure is at 38 which is what i always run my ac isnt even plugged in because i hate the drain on the engine when its running. so do you guys have any suggestions to help me out
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  #2  
Old 02-09-2011, 11:37 AM
Clinton Clinton is offline
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Default Re: Bad gasmileage

Have you tuned it up? clean IAC etc?
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  #3  
Old 02-09-2011, 11:42 AM
shadyroids shadyroids is offline
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Default Re: Bad gasmileage

have not tuned it kinda new to fixing things like i know how to put in lifts and external mods but i dont mess with the engine new air filter oil change didnt help so please explain stuff
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  #4  
Old 02-09-2011, 12:37 PM
shadyroids shadyroids is offline
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Default Re: Bad gasmileage

it doesnt idle roughly at all so i dont think its iac
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  #5  
Old 02-09-2011, 03:57 PM
FireRanger FireRanger is offline
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Default Re: Bad gasmileage

What year is this truck and how many miles? IAC shouldn't be doing much of anything when not at idle. Start with the basics (and cheap) and then get more complicated.

- Replace or clean air filter (done)
- Clean MAF (procedure in the How-To section) [free!]
- Clean the throttle body (procedure in the How-To section) [free!]
- Clean the IAC while you're at it (Why not, its there) [free!]
- Replace fuel filter [cheap]
- Make sure fan clutch isn't seized (can you spin it by hand with the engine cold and off)
- Replace spark plugs with Motorcraft of Autolite brand only!!!

Seafoam treatments may or may not help. If you choose to do that, do it before changing the spark plugs and you will need to do an oil change within 100 miles. Search for seafoam on here for lots of info:
- 1/3 can through the brake booster
- 1/3 can in the gas tank
- 1/3 can in the oil
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How to: Aux light wiring, relays, & fuses
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  #6  
Old 02-09-2011, 04:02 PM
TurdFX4 TurdFX4 is offline
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Default Re: Bad gasmileage

Don't feel bad, I'm getting 12mpg (4.0, 33's, 4.10's)
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  #7  
Old 02-09-2011, 09:41 PM
shadyroids shadyroids is offline
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Default Re: Bad gasmileage

98 and 126k automatic
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  #8  
Old 02-09-2011, 09:47 PM
Rango88 Rango88 is offline
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Default Re: Bad gasmileage

Quote:
Originally Posted by shadyroids View Post
ok guys i have a ranger with the 3.0 in it. i usually get around 15mpg in the winter, and 18-19 in the summer. well right now i have been getting ridiculously low gas mileage. im gettin like 11-12mpg , my cat is clean, and my tire pressure is at 38 which is what i always run my ac isnt even plugged in because i hate the drain on the engine when its running. so do you guys have any suggestions to help me out
is there the tire pressure supposed to be set at the high thirties? Just wondering since all of my passenger cars I set them at 32, is it different for trucks?
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  #9  
Old 02-09-2011, 11:26 PM
bassplyer92517 bassplyer92517 is offline
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Default Re: Bad gasmileage

Quote:
Originally Posted by Crowd88 View Post
is there the tire pressure supposed to be set at the high thirties? Just wondering since all of my passenger cars I set them at 32, is it different for trucks?
It depends on the tires. The tires on my truck say 32, but the tires I had before these ones said 35.
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  #10  
Old 02-10-2011, 12:43 AM
shadyroids shadyroids is offline
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Default Re: Bad gasmileage

yeah mine says 35 but i like them a little firmer but thats just me
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  #11  
Old 02-10-2011, 08:16 PM
bLinker bLinker is offline
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Default Re: Bad gasmileage

I run 40 psi front and rear, i found that is the best for bumps/gas mileage/wear on your tires.

38 Summer
40 Winter
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  #12  
Old 02-10-2011, 08:18 PM
Rango88 Rango88 is offline
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Default Re: Bad gasmileage

I thought it would be better to have less pressure in the winter since it improves traction...
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  #13  
Old 02-13-2011, 06:54 PM
shadyroids shadyroids is offline
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Default Re: Bad gasmileage

alternator blew up on friday so i think that might have had something to do with it too if it was going and locking up
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  #14  
Old 02-13-2011, 07:03 PM
FireRanger FireRanger is offline
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Default Re: Bad gasmileage

Nah you'd know it. The belt would squeal and break. I think that might be a coincidence.
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2003 Edge 4.0 4wd

How to: Aux light wiring, relays, & fuses
Info: 300+ intake threads here on FRF
Info: HID Projectors
How To: NO HEAT Troubleshooting Guide
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  #15  
Old 02-13-2011, 08:36 PM
shadyroids shadyroids is offline
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Default Re: Bad gasmileage

hahaha when it went there was squealing growling rattling it was BAD!!!!!!!!!!!!!!!
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