Gas Mileage
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Freshman User
Joined: May 2003
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Gas Mileage
I have 1990 F150 with the 5.0 and the 5 speed. It's a fairly new pickup (to me anyway), I've only put 250 miles on it. I find that I get anywhere from 7-11 miles to the gallon. What can I do to increase this? I know that I'm not gonna get much, but I believe that to be pathetic. I'd appreciate any help.
ken
ken
Lead Driver
Joined: Feb 2003
Posts: 8,140
Likes: 4
From: Oak Harbor, OH
Gas Mileage
A full tune-up:
Spark plugs
Spark plug wires
Oxygen sensor(s)
Air filter
Breather filter
PCV valve
PCV hoses and grommets if needed
Check tire pressure
Also tire size has something to do with it as well. If it has over-sized tires that can affect milage,
Spark plugs
Spark plug wires
Oxygen sensor(s)
Air filter
Breather filter
PCV valve
PCV hoses and grommets if needed
Check tire pressure
Also tire size has something to do with it as well. If it has over-sized tires that can affect milage,
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Freshman User
Joined: May 2003
Posts: 42
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Gas Mileage
how big of a pain is it to replace the oxygen sensor? What exactly does it do? How much do they run? What kind do I need to get?
I apologize for the questions, I've been looking for some time at them and wondering if it could make my truck run better. Other than my breather filter, I've replaced it all....
Thanks, I really appreciate it.
ken
I apologize for the questions, I've been looking for some time at them and wondering if it could make my truck run better. Other than my breather filter, I've replaced it all....
Thanks, I really appreciate it.
ken
Senior User
Joined: May 2003
Posts: 203
Likes: 0
From: San Diego
Gas Mileage
The O2 sensor controls the lean/rich setting of the engine. They are supposed to be replaced every 30,000 miles. Cost is around $50, depending on model.
If your O2 sensor is bad or very old, gas mileage can be terrible. On the other hand, there are many other things that can give you terrible gas mileage.
Have you pulled codes from the engine? That would be the place to start. Steve88 can tell you how with a jumper wire, or if you are uncomfortable with jumper wires then buy a codereader. WalMart has a blinking LED version for about $30, codereader.com has a digital one for $70, extension cable and shipping included. Obviously the most expensive one is the easiest to use.
Regards, Robert.
If your O2 sensor is bad or very old, gas mileage can be terrible. On the other hand, there are many other things that can give you terrible gas mileage.
Have you pulled codes from the engine? That would be the place to start. Steve88 can tell you how with a jumper wire, or if you are uncomfortable with jumper wires then buy a codereader. WalMart has a blinking LED version for about $30, codereader.com has a digital one for $70, extension cable and shipping included. Obviously the most expensive one is the easiest to use.
Regards, Robert.
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Freshman User
Joined: May 2003
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Gas Mileage
Ok I'll replace that, I had wondered about it. The guy said he hadn't changed the fuel filter in about 70,000 so I'm pretty sure it still has the original O2 sensor.
I put in new plugs, new wires, the distrubitor cap and rotor had been replaced within 2K. I'll have to find a breather filter, I should replace the entire hose as it tends to slip off the filter. Thanks for the help, I'll pick one up and see what happens.
ken
I put in new plugs, new wires, the distrubitor cap and rotor had been replaced within 2K. I'll have to find a breather filter, I should replace the entire hose as it tends to slip off the filter. Thanks for the help, I'll pick one up and see what happens.
ken
Tuned
Joined: Jun 2003
Posts: 489
Likes: 1
Gas Mileage
can a bad O2 sensor cause the engine to miss or run rough too? I think mine is as old as dirt. Why just use OE? thanks.
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Freshman User
Joined: May 2003
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Gas Mileage
Anyone have a clue where I can get the stamping numbers for my pickup?
and what does OE mean and why do I need it?
thanks
ken
and what does OE mean and why do I need it?
thanks
ken
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Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
Gas Mileage
OE = original equipment (The parts Ford put on your truck at the factory)
OEM = original equipment manufacturer (Ford, Motorcraft, Ate, Sterling, Bosch - whatever company made the OE parts)
OEM = original equipment manufacturer (Ford, Motorcraft, Ate, Sterling, Bosch - whatever company made the OE parts)
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