11-11-2018, 06:57 AM
welcome X90 that is very cool car, those are. 16valve engine and with MAP sensor and OBD2. sure.
02 front does swing, in fact stuck at or newer zero , (no cracks exhuast flange or exh tunnel #4 crack as is so common that crack. sucking in air and o2 goes to 0vdc and fuel goes full rich.
where did you see the temperature error?
that is good trick, pulling vacuum hose and leaning, the mix.
id say ECU is ok, never heard of any 96 up ecu fail ever (proved)
what is idle fuel pressure.? exactly
is FPR tested fully , from key on to idle and then gunned to WOT for 1 second?
its rich for some reason,
leaking injectors? (do leak down test on them?)
the maf dirty will read low and go lean , never does it go rich, (for sure easy to test with voltmeter to prove not it)
take off the exhaust tin shields yet, exhaust MAN, and gander at it? for cracks.
ever have bad gas in it?
that is it for now, i bet ECU is okay. EFI us rich for 2 reaons , it is rich ! or the O2 sensors caused (0v is no good), and 02 is bad or exhaust leaks doing that.
for sure you are on track, !!!
02 front does swing, in fact stuck at or newer zero , (no cracks exhuast flange or exh tunnel #4 crack as is so common that crack. sucking in air and o2 goes to 0vdc and fuel goes full rich.
where did you see the temperature error?
that is good trick, pulling vacuum hose and leaning, the mix.
id say ECU is ok, never heard of any 96 up ecu fail ever (proved)
what is idle fuel pressure.? exactly
is FPR tested fully , from key on to idle and then gunned to WOT for 1 second?
its rich for some reason,
leaking injectors? (do leak down test on them?)
the maf dirty will read low and go lean , never does it go rich, (for sure easy to test with voltmeter to prove not it)
take off the exhaust tin shields yet, exhaust MAN, and gander at it? for cracks.
ever have bad gas in it?
that is it for now, i bet ECU is okay. EFI us rich for 2 reaons , it is rich ! or the O2 sensors caused (0v is no good), and 02 is bad or exhaust leaks doing that.
for sure you are on track, !!!
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