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1998 Ford Escort fuel problem

Tiny
SYNJIM
  • MEMBER
  • 1998 FORD ESCORT
1998 Ford Escort 4 cyl Front Wheel Drive Automatic

engine cuts out, not 30 lbs pressure (spec is 55-85) at fuel rail even with new pump/filter. Engine will run and idle but when warms up will not get enough fuel for highway speed.
Sunday, November 30th, 2008 AT 12:35 PM

1 Reply

Tiny
DAVE H
  • MECHANIC
  • 13,384 POSTS
Fuel Pressure Regulator (Electronic Returnless Fuel System)
Electronic returnless fuel system does not use a fuel pressure regulator. Electronic returnless fuel system uses a Fuel Rail Pressure (FRP) sensor to sense fuel pressure. FRP sensor is located in fuel supply manifold assembly. FRP sensor input signal is used by the PCM to vary the duty cycle output to the Fuel Pump Driver Module (FPDM) to compensate for varying loads. FPDM then modulates voltage to fuel pump to achieve proper fuel pressure. Engine Fuel Temperature (EFT) sensor input signal is also used by PCM to vary fuel pressure to avoid fuel system vaporization.
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Thursday, December 4th, 2008 AT 1:36 PM

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