code 179 poor gas milage
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code 179 poor gas milage
i have 93 f150 4.9l 6. and I'm getting a code 179 i replaced o2 sensor next to cat. I cleared code and it came back. i noticed that my air filter was clogged so i changed that. could that cause this problem? also lost about 50 mile per tank of gas. any ony have any tips?
thanks.
thanks.
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Joined: Jun 2004
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From: B/CS, Texas!!
179 is rich code...and you lost 50miles you say, so Im betting your O2 sensor was just doing its job(setting RICH) and needed no replacement.
Some things to check:
-High Fuel pressure (most common problem)
*Check it at the fuel rail valve...on the I6, the pressure should be 55PSI at idle.
-Leaking Injectors
*See how fast the fuel pressure bleed down is.
-O2 sensor stuck in LEAN mode.
*Replace O2 sensor
Some things to check:
-High Fuel pressure (most common problem)
*Check it at the fuel rail valve...on the I6, the pressure should be 55PSI at idle.
-Leaking Injectors
*See how fast the fuel pressure bleed down is.
-O2 sensor stuck in LEAN mode.
*Replace O2 sensor
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