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  #16  
Old 12-03-2010, 09:44 PM
mransr mransr is offline
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Default Re: Needs advice 4.0 only getting 11 mpg any suggestions?

Quote:
Originally Posted by pooleo8 View Post
If you had a code for o2 sensor it could be that they are telling the truck to run rich, that would casue the excessive blackness in the pipe.
+1

soot in the exhaust means it's running real rich and a O2 sensor code, even a transient one, sure could point to the cause of the rich condition...

O2 senors are 'wear items' and should be replaced if there is ANY indication of an issue with them if you have more than 50-70,000 miles...I'd say pick up new O2 sensors and maybe an air filter and see if your mileage gets back up near 20 mpg
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  #17  
Old 12-04-2010, 07:59 AM
mdv422 mdv422 is offline
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Default Re: Needs advice 4.0 only getting 11 mpg any suggestions?

anyone know what gap the plugs need for the 4.0 SOHC?
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  #18  
Old 12-04-2010, 09:10 AM
01_ranger_4x4 01_ranger_4x4 is offline
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Default Re: Needs advice 4.0 only getting 11 mpg any suggestions?

the gap is listed on a sticker on the radiator support under the hood.
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  #19  
Old 12-04-2010, 10:16 AM
mdv422 mdv422 is offline
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Default Re: Needs advice 4.0 only getting 11 mpg any suggestions?

Thanks im not much of a mechanic as you can tell
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  #20  
Old 12-05-2010, 01:37 PM
terryduanemiller terryduanemiller is offline
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Default Re: Needs advice 4.0 only getting 11 mpg any suggestions?

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Originally Posted by mdv422 View Post
Fort knox Area
must a seen u while traveling to Louisville, or coon hunting in Shelbyville
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  #21  
Old 12-06-2010, 04:20 AM
mdv422 mdv422 is offline
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Default Re: Needs advice 4.0 only getting 11 mpg any suggestions?

Prob. Its hard to miss it has black reflective flames. So at night they are white when light hit them.
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  #22  
Old 12-07-2010, 04:26 PM
Christian Vance Christian Vance is offline
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Default Re: Needs advice 4.0 only getting 11 mpg any suggestions?

I have a 2003 ranger 4.0 as well and im only getting about 13 or 14 mpg. I need suggestions as well!
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[B]2003 FORD RANGER XLT 4X4. EXT CAB. 4.0 V-6.

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  #23  
Old 12-10-2010, 07:13 AM
mdv422 mdv422 is offline
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Default Re: Needs advice 4.0 only getting 11 mpg any suggestions?

new problem - when i put the truck in park the truck dies but when i drive it charges good. just put a new battery and alt. in.

Last edited by mdv422; 12-10-2010 at 07:17 AM.
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  #24  
Old 12-16-2010, 06:42 PM
mdv422 mdv422 is offline
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Default Re: Needs advice 4.0 only getting 11 mpg any suggestions?

UP DATE ON TRUCK. Did Tune up truck got worse. Has been in the shop for 3 days and they cant fig out y the cylinders are trying to load.
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  #25  
Old 12-16-2010, 09:16 PM
FireRanger FireRanger is offline
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Default Re: Needs advice 4.0 only getting 11 mpg any suggestions?

Can you be specific about what you did?
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  #26  
Old 12-17-2010, 06:57 AM
mdv422 mdv422 is offline
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Default Re: Needs advice 4.0 only getting 11 mpg any suggestions?

I put a new fuel filter, cleaned the k&n air filter, changed the oil bc it was time anyways. Put a new belt on. (That fixed the squeak) a new alt. Spark plugs and new 8.00mm wires. Cleaned the MAF. After all that the truck had a miss in idle. On the big end it ran fine. So I took it to a shop and they have worked on it for 4 days now and still cant fig out why there is a miss. They said the computer is saying there is a cylinder trying to load. They did a compression test and I havenít yet herd the guy to know what was wrong yet. Today I hope to find out the trouble with it. Or at least I hope so.
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  #27  
Old 12-17-2010, 07:12 AM
FireRanger FireRanger is offline
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Default Re: Needs advice 4.0 only getting 11 mpg any suggestions?

I don't know what a cylinder trying to load means. Never heard that expression before.
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How to: Aux light wiring, relays, & fuses
Info: 300+ intake threads here on FRF
Info: HID Projectors
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  #28  
Old 12-21-2010, 09:01 PM
mdv422 mdv422 is offline
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Default Re: Needs advice 4.0 only getting 11 mpg any suggestions?

Latest update the coil pack was bad and its being replaced, also the spark plugs were damaged when they was installed. That was on the passenger side were there hard to get to. So luckily it will be fixed and ill get it back sometime tomorrow or Thursday just in time for the winter storm thatís on its way.
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  #29  
Old 12-22-2010, 04:59 AM
FireRanger FireRanger is offline
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Default Re: Needs advice 4.0 only getting 11 mpg any suggestions?

I think I once left two of the right side plugs in because they didn't want to come out. I couldn't get the leverage I needed without breaking my arm in two places.
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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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  #30  
Old 12-22-2010, 07:38 PM
mdv422 mdv422 is offline
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Default Re: Needs advice 4.0 only getting 11 mpg any suggestions?

Truck is now home. There were 2 broke spark plugs and the coil pack was bad. The throttle body was cleaned and MAF. So 2morrow Iím going to fill up and see what kind of gas mileage it will get for the next week or so. I hope after all this it will get better than 11 mpg.
Thanks to all the input on how to fix problems.
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