Question about Ford Taurus

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Horrible gas mileage

I have a 2005 Ford Taurus SE. I started to notice that the mileage gradually started to decrease. Today, as I was driving home I noticed that the display (which show how much miles I have till I have to gas up) started to drop a mile every 3 seconds. By the time I got home, according to the display I used 7miles worth of gas on 3/4 mile. I appriciate your help! Thanks!

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  • Expert
  • 59 Answers

This could be a bit scary. Immediately check for leaking gasoline.

Do not operate the vehicle is you see anything dripping (gushing) from the car after you next start it. If so, turn if off immediately and stay the hell away from the car until the gas evaporates.

Posted on Jul 08, 2015

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  • Ford Master
  • 76,630 Answers

You need to provide your driver habits, any check engine light issues. Exactly how many miles to the gallon are you getting in town, freeway and combined?

Posted on Mar 26, 2014

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

chuck943
  • 783 Answers

SOURCE: fuel gauge not working all the time.

This is a normal concern.
The instrument cluster uses 4 different operating modes to calculate the fuel level:
Anti-slosh (default mode)
Key OFF fueling
Key ON fueling
Recovery
After a fuel fill up, the time for the fuel gauge to move from empty (E) to full (F) ranges from 2 seconds to 55 minutes depending on which operating mode the fuel gauge is in.
The default fuel gauge mode is called the anti-slosh mode. To prevent fuel gauge changes from fuel slosh (gauge instability due to changes in fuel sender readings caused by fuel moving around in the tank), the fuel gauge takes approximately 55 minutes to go from empty (E) to full (F).
The key OFF fueling mode (2 seconds to read empty [E] to full [F]) requires 3 conditions be met:
The key must be in the OFF position throughout the entire refueling of the vehicle.
At least 15% of the vehicle's fuel capacity must be added to the fuel tank.
The instrument cluster must receive a valid key ON fuel sender reading within 1 second of the key being put into the RUN position. The key ON sample readings are considered valid if the fuel sender reading is between 15 ohms ± 2 ohms and 160 ohms ± 4 ohms.
If these conditions are not met, the fuel gauge stays in the anti-slosh mode, which results in a slow to read full (F) event.
The key ON fueling mode (approximately 90 seconds to read empty [E] to full [F]) requires 3 conditions be met:
The transmission is in PARK (P).
The key is in the RUN position.
At least 15% of the vehicle's fuel capacity must be added to the fuel tank.
In key ON fueling mode, a 30-second timer activates after the transmission is put into the PARK (P) position (automatic transmissions). When the 30-second time has elapsed and at least 15% of the vehicle's fuel capacity has been added, the fuel gauge response time is 90 seconds to read from empty (E) to full (F). When the transmission is shifted out of PARK (P), the fuel gauge strategy reverts to the anti-slosh mode. The key on refueling mode prevents slow to read full events from happening if the customer refuels the vehicle with the key in the RUN position.
Recovery mode is incorporated into the instrument cluster strategy to recover from a missing fuel level input during a refueling event. Missing fuel level inputs result from intermittent opens in the fuel sender or its circuits. Recovery mode (empty [E] to full [F] approximately 20 minutes) is initiated when the following 2 conditions are met:
The instrument cluster is in the anti-slosh (default) mode.
The actual fuel level in the tank is greater than what is being displayed by the fuel gauge

Posted on Feb 18, 2009

emissionwiz
  • 76630 Answers

SOURCE: 2002 Ford Taurus ses 24v DOHC

Sounds like when you ran the car out of gas the fuel pump was damaged, these in tank electric fuel pumps are very small and produce allot pressure and volume, the way they do this is to use the gas around them to cool down, when the pump comes out of fuel when the tank is below 1/4 full it starts to get hot very quickly, since your pump was well used (109000 miles) that was the last straw. When you replace the pump also replace the fuel filter.
I would also clean the throttle valve and idle speed control valve, this may be contributing to the low idle complaint, clear the system after the pump and cleaning by disconnecting the battery for a few moments.

Posted on Sep 09, 2008

  • 491 Answers

SOURCE: drastic drop in gas mileage

well you may need to have it serviced even though your not too hard on it. try a complete tune up and see how the milage is affected

Posted on Dec 22, 2008

  • 1861 Answers

SOURCE: Location of the PVC and gas filter on 4 cylinder 2003 Solara

The PCV and the fuel filter replacements are not going to increase you fuel mileage. What you should really consider is getting some good fuel injection cleaner into the tank, and get an "induction system cleaning". Those two items alone will address most of your mileage issues. The PCV does nothing for mileage, nor does the fuel filter. Also, for maximum fuel mileage, you should have the correct sparkplugs from Toyota in your car. "Aftermarket" plugs doe not perform very well at all.

Posted on Jan 10, 2009

  • 76 Answers

SOURCE: poor gas mileage on my jeep liberty

change your spark plugs if they haven't been changed in awhile. check your tires for the propper psi there should be a sticker on the inside of your drivers door that will tell you recomended air pressures go by this not the recomendations on the tires. also where are you getting you gas does it contain ethanol sometimes this can burn faster.

Posted on Feb 05, 2009

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