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rpmdiag
rpmdiag, Tech and Instructor
Category: Ford
Satisfied Customers: 6847
Experience:  Since 1975
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2001 Ford f150 5.4 = code p0171 Truck cranks but no start

Customer Question

2001 Ford f150 5.4 = code p0171
Truck cranks but no start occasionally. I can always get it started by either leaving key in run position for 90 seconds or by turning key off to acc a few times?
Submitted: 25 days ago.
Category: Ford
Expert:  rpmdiag replied 25 days ago.

Hi, I'm Ron and I will be helping you today.
Stand by for a moment while I prepare your answer.

Expert:  rpmdiag replied 25 days ago.

The first thing to check is the fuel pressure with a gauge. Both of these issues you have can be related to low pressure. Most parts stores have tools like this for loan and they will tell you the pressure specs and how to attach the gauge.

Thanks, Ron

Expert:  rpmdiag replied 25 days ago.

Hi, I’m just following up with you to see if there are any more
questions you may have.

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