s300 goes into fuel cut at 1.5 boost

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jkms
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Joined: Thu Oct 02, 2008 5:27 pm

s300 goes into fuel cut at 1.5 boost

Post by jkms »

I HAVE A CUSTOMERS CAR IN WITH A PROBLEM THAT I HAVE NOT SEEN BEFORE WHEN THE CAR GOES INTO BOOST 1 TO 1.5 PSI ,GOES INTO FUEL CUT
IN DATA LOG YOU CAN SEE INJECTORS SHUT DOWN
IF YOU REMOVE CHARGE TUBE OFF THROTTLE BODY AND RAMP UP, IT RUNS WITHOUT NO PROBLEM TO 8000 RPM AT WOT
ALL SAFETYS ARE OFF OR MAXED OUT AND SAME WITH REV LIMMITORS TRYED ANOTHER COMPUTOR SAME ??
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Spunkster
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Re: s300 goes into fuel cut at 1.5 boost

Post by Spunkster »

Without the calibration and a datalog showing the issue, it is hard to speculate. Do not use all caps.
jkms
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Joined: Thu Oct 02, 2008 5:27 pm

Re: s300 goes into fuel cut at 1.5 boost

Post by jkms »

I noticed in sensor screen when goes into boost cut the rev limmitor and boost cut and fuel cut activate
but they are not on
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Spunkster
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Re: s300 goes into fuel cut at 1.5 boost

Post by Spunkster »

You have an error for idle control, and you have a boost cut set if there are any check engine codes.
jkms
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Re: s300 goes into fuel cut at 1.5 boost

Post by jkms »

there is no isc on the manifold plug is not connected to anything
only error code is idle control
i do not see any boost controls set unless i just missed it or not seeing it
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Hondata
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Re: s300 goes into fuel cut at 1.5 boost

Post by Hondata »

You have an error code
bc-1.png
bc-1.png (3.61 KiB) Viewed 2959 times
And your calibration is set to boost cut if there is an error code
bc-2.png
bc-2.png (3.75 KiB) Viewed 2959 times
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jkms
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Re: s300 goes into fuel cut at 1.5 boost

Post by jkms »

I unchecked the box for with code boost cut
same goes into boost cut
this car has no ISC control installed by customer manifold
has no provisions for the valve after market manifold .
if I take an ISC control and plug it in to the harness car works fine up to
its 8 psi setting ..
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Spunkster
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Re: s300 goes into fuel cut at 1.5 boost

Post by Spunkster »

Have you tried disabling the IAC error in the idle section?
jkms
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Re: s300 goes into fuel cut at 1.5 boost

Post by jkms »

yes
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Spunkster
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Re: s300 goes into fuel cut at 1.5 boost

Post by Spunkster »

The calibration you have posted does not have this disabled.
jkms
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Re: s300 goes into fuel cut at 1.5 boost

Post by jkms »

tryed with it checked and then with it unchecked and back to checked
that would be the file i sent you at the present they are unchecked
jkms
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Re: s300 goes into fuel cut at 1.5 boost

Post by jkms »

this car has a after market wire harness
but i dont see that that would be a probem
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Re: s300 goes into fuel cut at 1.5 boost

Post by Spunkster »

Send the current calibration being used as well as a datalog showing the issue using that calibration.
jkms
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Joined: Thu Oct 02, 2008 5:27 pm

Re: s300 goes into fuel cut at 1.5 boost

Post by jkms »

I am first going to try a known good ecu from our
engine shop to see what happens and will data log
for info ..
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