Couple question before I get started

[99ss]

I have a dynojet wideband commander not an lc1

[99ss]

Whats really weird is when I first started all this I was getting slight misfires on all cylinders. Then I recalibrated and it was maybe a little lean and I got all 50 counts on all cylinders except for #1. Then I do the crank re-learn and I get misfires on all cylinders. I do the crank re-learn again and its back t0 6,7 and 8 cylinders. I change the plugs and re-cal the IFR and get the same misfires on 6,7 and 8. I checked a wire with an ohm meter and its fine.

I'm not sure what to do now.

[joecar]

I have a dynojet wideband commander not an lc1

Ah, slip of the mind...

[joecar]

99ss,

You have a more fundamental problem...
Why do various PID's have the same value and the same waveform...?
Even SPARKADV waveform looks like IAT, ECT, VSS, MAP, MFCYLnC...?
They all look the same...!!

(look at IAT and ECT... were they really that cold when you logged...?)

So, you're connecting direct using your laptop...?
Is your FlashScan V1 or V2...?

Try validating PID's.

[99ss]

I have the v1 flashscan pluged via usb into my laptop. I have the wideband wired in to the flashscan on the analog side middle is ground and the one furthest away from the other output jack is what I'm thinking is channel 1.

I use the dataport on the car obd2 thing to connect the flashscan.

So are you thinking I've got a short somewhere?

Should my plugs get so blackened at 12.5 avg afr for not even a 5 minute startup?

How do I validate PIDS?

can my ecu be hosed? why all of sudden did it go from being rich with a few misfires to 50 counts all the same on 3 cylinders and then all cylinders and hen 3 cylinders?

It was never that lean. It was running at 14.7-15.3 for a few miles then I added more fuel. It all started right after my flash where I set the IFR and MAF table.

Holy cow! it wasnt -40 when I started the car

Now I'm freaked. what do I do ? where do i look? is it a physical wiring problem or a pc related issue?

attached current tune file

I have the RR just sitting here. Should I put it in?

ok searched, I'll go connect and validate. Then what?

[joecar]

With engine running, check voltage at battery terminals, should be 13-16V.

In the scan tool, be sure to:
- enter your correct VIN/OS/Trans (get OS id from tunetool);
- enter your correct PCM (99-07 Gen III LS1).

To validate pids, in the scantool connect to vehicle and go Info->Validate pids.

Take another log... if the values are still insane do this:
- reflash the same tun file;
- if that doesn't go better, then reflash the previous tune file(s).

After each flash finishes, do you turn off ignition and wait 15 seconds before turning it on again...?

When you flash, do you do cal-only flash or full-flash...?
(cal-only flash is for editing tables; full-flash is for changing OS.)

The PCM must still be working because it is able to read the crank sensor and directly control the ignition coils and fuel injectors... if PCM wasn't working, then engine would not run.

[joecar]

I re-edited my previous post to be in a more logical sequence.

[99ss]

I do the re-cal only flash and I wait until the 15 second timer has expired and usually a little longer.

I'll go connect and validate. Not sure where to edit vin os and trans but I'll find it..lol

[99ss]

validated then started it here is the log. car sounds like crap too, you can hear it missing

reflashed.. checked voltage and the same

voltage was 13

I'll wait and see what you say. I'm about ready to blow the car up. I inspected the harness's and they look fine.
Used up a lot of gas in SDAutoVE mode, it was way rich the whole time you could see the exaust showing it

[99ss]

Ok this is the new plan. I'm going to chase down the electrical problems causing the wrong values.

TP, IAT, and VSS and MAP are all on the same ecm connector. (according to my WBC software my TPS signal is hosed) IS that the reson for the misfires? I dont know b ut having a bad ground cant be helping anything.