air flow meter rb30 turbo??

[striga22]

hey guys i'm running a rb30 converted to injection/turbo and i was wondering if any one knew how many turns in the screw? the one i have has been tampered with cheers

[B.D.R]

Check out www.calaisturbo.com.au there is a massive amount of info over there.

Or take it and get it Dyno'd, i would any way

[bundybluedog]

if your asking if your air flow meter is working ok just check it.
Put 12v on terminal 5 and earth terminal 2 and then measure the voltage between terminals 2 and 3 its should be between 1.1 and 2.1v then blow thru the airflow meter and the voltage should increase between 2-4v.
hope that helped
dan

[bigcam]

put a multimeter set to resistance (ohms) between piun 2 and 6, and turn to set the pot to 382 ohms. (its 15 turns end to end so keep turning!




AFM - ECU - Description

* 1 - 26 - Air temp sensor
* 2 - 36 - Body ground
* 3 - 31 - Output signal
* 4 - 12 - Air wire self cleaning
* 5 - Battery power (from EFI relay)
* 6 - 30 - Mixture screw

To the left is a blue calibration potentiometer.

This has a range of 15 turns from 0 - 1K ohms.

This pot doesn't actually appear to use any of the circuitry within the AFM itself but is a calibration for the IDLE. Factory setting for this pot is about 382 ohms (which measures 3.58 volts when the ECU is powered on). This can be adjusted but is not recommended unless you have a wideband exhaust gas analyser. At 2000 RPM the Air/Fuel ratio should be at stoich 14.7:1.

The ECU requires two main sensors to operate the engine. Other components may fail and cause problems but it is still possible to keep the engine running the vehicle with a failed O2 sensor, AAC valve, Air regulator etc. even though there may be problems with fuel consumption and poor idle due to these components