why have i never hit fuel cut @ 10psi?
06-28-04, 10:38 AM
#1
why have i never hit fuel cut @ 10psi?
why have i never hit fuel cut in my s5TII at 10+psi? i have no fcd (its sitting on my desk since its useless right now) and i'm just wondering how my stock ECU could not be cutting fuel.
could my stock boost sensor be bad?
could my stock boost sensor be bad?
06-28-04, 10:43 AM
#2
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maybe its chipped? inaccurate boost guage?
06-28-04, 04:07 PM
#7
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in the fsm they give you the specs, and then you can graph it out
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06-29-04, 09:53 AM
#13
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To bench test the pressure sensor:
Using an old PC power supply & a VOM.
Turn the boost sensor over with the connector facing up You should have a blank space in the upper left corner.
The blade in the upper right is boost signal, the blade in the lower right is 5v and the blade in the lower left is ground.
The red lines on PC power supply should be at five volts, but check them first.
Take some female blade connectors and attach them to the ground and the 5 volt on the PC power supply then hook them to the boost sensor, then use your multi meter to check the boost signal as you vary the pressure.
It should go down to like .75 under vacuum.
At 8 PSI of pressure it should be somewhere around 3.5 volts.
Using an old PC power supply & a VOM.
Turn the boost sensor over with the connector facing up You should have a blank space in the upper left corner.
The blade in the upper right is boost signal, the blade in the lower right is 5v and the blade in the lower left is ground.
The red lines on PC power supply should be at five volts, but check them first.
Take some female blade connectors and attach them to the ground and the 5 volt on the PC power supply then hook them to the boost sensor, then use your multi meter to check the boost signal as you vary the pressure.
It should go down to like .75 under vacuum.
At 8 PSI of pressure it should be somewhere around 3.5 volts.
06-30-04, 05:32 AM
#14
I'm a boost creep...
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Originally posted by jacobcartmill
is there any way i could visibly see the FCD on the ECU? (like if i took the case off)
is there any way i could visibly see the FCD on the ECU? (like if i took the case off)
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