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1995 Ford F-150 terrible fuel mileage

Tiny
BAWEST
  • MEMBER
  • 1995 FORD F-150
  • V8
  • 4WD
  • AUTOMATIC
  • 200,053 MILES
Hi My 95 F150 is showing a code for heated o2 sensor, and is currently getting 8.2 miles per gallon. Can these be related? What else should I look for? The filter is new, and I have replaced the in tank pump on the front tank, saving for the rear. It has the 5.8 engine. It seems to lack power. As well as I can remember, the 5.8 F150 that my dad used to have would really pin you to the seat. This truck takes 12 sec. 0-60. Thank you, JB
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Friday, December 7th, 2007 AT 12:47 PM

2 Replies

Tiny
INDYUKE
  • MECHANIC
  • 416 POSTS
Has it had a thorough tune up recently? Fuel system (especially injectors) clean and good fuel pressure. Ignition timing correct and no leaking spark plug wires. Plugs gapped correctly. All sensors within range and not sluggish. All filters in good shape. Those are some things to look for.

An oxygen sensor that isn't working correctly. Or not at all would definately cause a difference in fuel economy. If it's gone bad, then most likely the computer has substituted a fixed value in place of the O2 sensor, allowing the truck to be driven but at a huge cost to efficiency. I hope this helps.
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Friday, December 7th, 2007 AT 1:30 PM
Tiny
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  • 2 POSTS
Hey thanks a lot. I'll give it a try and let you know how it goes. JB
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Sunday, December 9th, 2007 AT 11:34 AM

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