STILL can't get my wideband to read... and i can't turn off the MAF

[rumblebox]

i set it up via the auto VE tutorial exactly. i'm running SD.

problem 1, i can't tell the computer not to check for my MAF or set "fail" to "1" without the car running for less than 1 second and shutting off.
problem 2, my WB MAP has nothing on it at all.

it's like you have to be an IT person by trade to be a tuner..... i'm about to say **** it and pay someone else to tune the POS.

[GMPX]

problem 1, i can't tell the computer not to check for my MAF or set "fail" to "1" without the car running for less than 1 second and shutting off.

Sounds like it's still thinking the MAF is there when it's not.
So, if the MAF has been removed from the car then all you need to do is shut the MIL off for P0101, P0102 & P0103 (table C6002 for GenIII PCM's), and certainly don't disable the MAF DTC's (table C6001).
If the MAF is still fitted but you don't want the PCM to look at it, again just turn the MIL off, have the DTC's enabled still, but set the High Fail Threshold very low (parameter C2901), maybe 50 Hz.

Knowing your way around a computer is pretty much mandatory with tuning EFI vehicles, after all, it is a computer running the engine, not a mechanical device!

[rumblebox]

I've had the MIL disabled since i went SD 3 years ago, but the autove tutorial said to disable the diag process all together.

I'm pretty good with computers, and i've always found EFI live to be user-friendly, but this friggin wide band is giving me hell. I'm thinking about ditching the serial connector and just going analog.

[Behold]

Is it the PID you have selected not seeing the Wide band? or do you think it's not seeing the WB it's self due to a cabling issue?

My first test would be to test the WB in the PC Direct and prove is shows data. Then get EFI to see it later. Did the WB come with software?

[swingtan]

1. Disabling the MIL is not the same as disabling the DTC Type. Disabling the DTC MIL will stop the dash light from coming up when the MAF fails. Disabling the DTC type prevents the ECM from knowing that the MAF has failed, so it keeps trying to use the MAF for air flow measurements. If the MAF is removed and the "DTC Type" is disabled, the ECM will crank and fire, then lean out and stall as the ECM thinks there is no airflow.
   
2. Serial WB should be fairly easy to set up, what brand / model of WB are you using? There are also different BAN MAPs for different WB's. You may need to recheck which MAPs and MAP data has been selected.

Simon.

[joecar]

RB,

Is this the LC-1...?

You already made a serial comms null-modem cable for it, did it work...?

Is there any reason you can't follow the Calc.VET tutorial instead (it is much simpler)...?

[joecar]

With the serial comms null-modem cable, you can directly view the LC-1's Lambda/EQR/AFR on the V2 LCD.

[joecar]

Which pid are you using in your WB map...?


Post a log file.

[rumblebox]

It is an LC-1

I tested the cable with a needle and a multimeter, and it works.

I thought i could only use Calc.VE if i have a MAF.

After work I'll try to view the data direcy from V2. My wife has the laptop, and she's out of town. So i wont be able to log until sunday.

The PID's I'm using are EXT.WO2AFR1 and EXT.WO2LAM1

[joecar]

From the V2 LCD/keypad navigate down until you see the wideband display...

with V2 connected to the vehicle OBD2 port and also to the LC-1, you should see the wideband reading on the V2 LCD.