rough running in gear going down road no acceleration bogs down

2000 FORD EXPEDITION
230,000 MILES • 5.4L • V8 • AWD • AUTOMATIC
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ROBERT YATES
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  • 2 POSTS
will not accelerate in gear may be in limp mode got code po171 fuel system too lean (cylinder bank 1). po442 EVAP control system small leak detected. po174 fuel system too lean (cylinder bank 2). did find PCV valve elbow was leaking and replaced but still no power while driving in gear or sitting still in drive and accelerating will bog down.
May 28, 2017 at 7:03 AM
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HMAC300
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  • 48,601 POSTS
check the fuel pressure that will set off the two codes you are seeing. See link.
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
May 28, 2017 at 8:00 AM
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ROBERT YATES
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Low fuel pressure with key on and have low pressure running less than 5 psi with key on and less than 20 psi running.
May 28, 2017 at 10:07 AM
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HMAC300
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  • 48,601 POSTS
that will cause it. It should be 35-45 key on only and 28-45 running. make sure to change filter when doing pump as well.
May 28, 2017 at 4:43 PM