The ECU can not correct for a bad FPreg.
mostly.
it might , if lucky, light cruise using the 02 sensors, and the +/-40% dynamic range of that.
but not accelerating.. the pressure must be correct.
correct my mistakes, if any, its new,
the first check.
is?
FPREG
1: fuel leaking out vacuum line , pulled?
2: vacuum diaphragm leak down test. no leak down allowed. hand vacuum tool.
3: then the hand tool and fuel pressure tests. check its range. per graph.
mostly.
it might , if lucky, light cruise using the 02 sensors, and the +/-40% dynamic range of that.
but not accelerating.. the pressure must be correct.
correct my mistakes, if any, its new,
the first check.
is?
FPREG
1: fuel leaking out vacuum line , pulled?
2: vacuum diaphragm leak down test. no leak down allowed. hand vacuum tool.
3: then the hand tool and fuel pressure tests. check its range. per graph.
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