FASS FA D08 150G User Manual
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Answer the following questions:
Did the vehicle start fine without the FASS or HPFP? Do you have high mileage on the VP44? If yes,
have your VP44 checked. Has the VP44 been subjected to a PSI of 5 or less? Has the VP44 been subject
to a failing lift pump? Does it occur more frequently when the conditions are warm? Have you recently
replaced your VP44? Was it used?
If yes to any of these questions, Start vehicle as soon as you enter the key (do not wait for the
“wait to start” light to go out) If the vehicle starts it suggest that the problem lies with the VP44.
Is the fuel pressure where it should be?
Has the truck had an ECM re-flash? If not, contact your dealer to find the most current flash for your
truck.
Do you have a WH-1002? If yes, refer to the “WH-1002” section located in “Electrical”