p0174 system too lean bank 2 + flashing engine light

Asked by Sep 21, 2016 at 06:56 PM about the 1998 Ford Taurus SE

Question type: Maintenance & Repair

I recently got the P0174 code and the engine light also flashes some of the
time (misfire?). I have a Ford Taurus 1998.

The car runs fine except when I go up a hill it lacks power and cannot go
past 70-80Km and if I give it more gas it does not increase in speed but
instead goes into high RPM (around 4000). Maybe downshifts? Car runs fine
on flat ground. I also have higher fuel burn then usual but haven't noticed
any fuel leak. I do smell a bit of gas from the engine when it's running, but
it's an old car so maybe it's normal?

So far  I have cleaned the MAF,  changed the gas filter, changed the spark
plugs, put fuel injector cleaner and replaced a couple vacuum hoses that
were getting old. The car now idles better then it used to but the engine light
and lack of power going up a hill hasn't gone away.

4 Answers

I've also replaced the air filter.

7,845

P0174 means Oxygen sensor on bank 2 detected lean condition (too much oxygen) on bank 2. The MAF (Mass Air Flow) Sensor is dirty or faulty. Dirty or oily air filter can cause the MAF to become dirty. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry. There could be a vacuum leak downstream of the MAF sensor. Check fuel pressure to make sure it's not starving for fuel

Well like I said I've changed the air filter, cleaned the MAF and checked for vacuum leaks so I think the problem is something else. How can I check for fuel pressure?

7,845

Connect a pressure gauge to the fuel rail, there's a fitting where you can connect it to.

Your Answer

Taurus

Looking for a Used Taurus in your area?

CarGurus has 15,127 nationwide Taurus listings starting at $1,800.

ZIP:

Ford Taurus Experts

  • #1
    Tom Demyan
    Reputation
    4,300
  • #2
    dandyoun
    Reputation
    2,040
  • #3
    lightGear
    Reputation
    1,980
View All

Related Models For Sale

Used Ford Explorer
1,267 Great Deals out of 70,072 listings starting at $1,000
Used Ford F-150
3,264 Great Deals out of 223,478 listings starting at $1,200
Used Ford Mustang
599 Great Deals out of 39,738 listings starting at $1,988
Used Chevrolet Malibu
1,035 Great Deals out of 62,795 listings starting at $880
Used Honda Accord
1,114 Great Deals out of 74,392 listings starting at $1,100
Used Toyota Camry
1,106 Great Deals out of 87,562 listings starting at $995
Used Ford Focus
740 Great Deals out of 62,867 listings starting at $900
Used Nissan Maxima
330 Great Deals out of 21,804 listings starting at $1,200

Used Cars For Sale

2017 Ford Taurus SE For Sale
552 listings starting at $15,990
2016 Ford Taurus SE For Sale
101 listings starting at $14,773
2015 Ford Taurus SE For Sale
285 listings starting at $9,995
2014 Ford Taurus SE For Sale
3 Great Deals out of 105 listings starting at $7,950
2013 Ford Taurus SE For Sale
6 Great Deals out of 115 listings starting at $5,988

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.