1996 F-150 4.9l Dtc P0171 And P0174
#1
09-10-2007, 08:14 AM
Join Date: Sep 2007
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1996 F-150 4.9l Dtc P0171 And P0174
Hello all
I just replaced my EGR valve position sensor, both up stream oxygen sensors. And battery. I cleared all the DTC’s, then drove 10 miles. The dreaded DTC P0171 and P0174: system too lean came up again. I am thinking fuel pressure next to look at. Any suggestion out there? Thanks.
I just replaced my EGR valve position sensor, both up stream oxygen sensors. And battery. I cleared all the DTC’s, then drove 10 miles. The dreaded DTC P0171 and P0174: system too lean came up again. I am thinking fuel pressure next to look at. Any suggestion out there? Thanks.
#3
05-09-2010, 06:33 PM
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Lugnut2008
Modular V8 (4.6L, 5.4L)
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11-09-2007 01:57 PM
