ExtremeDSM

iTrader: (95)

The ECU is perfectly fine. My guess is I lost a ground or something somewhere but that is just a guess.

So much for people helping ya out on here.........................

batty200

iTrader: (3)

Unfortunately without being there tracing a modified wire harness is not possible. Use the factory diagram and trace all the wires to the ECU from the injector. There probably is a lost ground so you would also want to study and see what you removed and if there is a ground in there needed for the injectors.

ExtremeDSM

iTrader: (95)

There has to be something in that log that throws up a red flag.

Ok, there is the cam angle sensor and crank sensor. One of those two have to send a signal to the ecu to tell the ecu when to send out an injector signal. I do not know how to read that log so, are both of those signals in that log working fine?

I just need to start ruling things out here and this needs to get done soon.

ExtremeDSM

iTrader: (95)

Removed at ecu:

#6 EGR solenoid relay ground (control)
#16 Evaporative purge solenoid relay ground (control)
#26 Rear O2 heater control
#35 Evaporative ventilation solenoid relay ground (control)
#48 Fuel pressure solenoid ground (control)
#65 A/C control
#72 not used, causes ADC 08 to flip from 0 to 1 when 1.7 V applied
#83 A/C control

wreckleford

iTrader: (2)

How do you know the ECU is fine? The amount of parameters that are wrong in the log suggests it may be the ECU.

The other thing I would check is the sensor ground wire. Should be the last wire on the bottom row to the right. See if you have continuity to the sensors with this wire. It wil not read to ground as it grounds through the ecu.

joseph143

iTrader: (8)

The only parameter that looks screwy to me is his coolant temp... His ecu is even signaling the injectors in the log... Duty cycle and pulse width both being active mean the ecu is attempting to run em... Lemme do a quick log and see if coolant logs the same way... did you dick with it at all?

ExtremeDSM

iTrader: (95)

I know the ecu is fine because this issue happened right after the wiring harness weight reduction.

No I did not do anything with the coolant temp wire.

I have checked a whole mess of wires for continuity, grounds and 5v power today. Only thing I have found weird so far is one sensor has 4.6v and another has 4.7. Everything else has checked out so far. I will have full results of what I check later today.

What does the immobilizer cut if something is wrong? Just wondering.

feautoevo

iTrader: (8)

Do you have a trailer? I'm in sparta if you can make it down this way, No promises but sometimes an extra set of eyes or multimeter can help!

Fast_Freddie

iTrader: (50)

Just disable the immobilizer in the periphery and see fi it starts...

Also it is really hard to troubleshoot over a screen, especially when no one knows exactly what you did, and how good of a job you did when you tore into your harness... as much as people would like to help, it is just shooting in the dark...

ExtremeDSM

iTrader: (95)

Thanks feautoevo but I would rather not trailer the car around if I don't have to.

Fast Freddie: I have not disabled the immobilizer yet but I will try that.

Here is what I got today.

All sensors are grounded through the ecu just fine.

#1 Injector #1 12v and signal wire has continuity
#2 Injector #4 12v and signal wire has continuity
#3 Front O2 heater control 12v and signal wire has continuity (2.6v and .2v others)
#9 Injector # 2 12v and signal wire has continuity
#11 Ignition coil cyl #1 and #4 12v and signal wire has continuity
#12 Ignition coil cyl #2 and #3 12v and signal wire has continuity
#14 Idle air control 12v and signal wire has continuity
#15 Idle air control 12v and signal wire has continuity
#24 Injector #3 12v and signal wire has continuity
#28 Idle air control 12v and signal wire has continuity
#29 Idle air control 12v and signal wire has continuity
#32 Mivec valve control 12v and signal wire has continuity
#34 Sensor ground good
#41 Waste gate solenoid relay ground (control) 12.1v and signal wire has continuity (11.4 other)
#42 TPS power 5v
#43 Crankshaft position sensor signal 12.1v and signal wire has continuity
#44 Coolant sensor signal 4.7v and signal wire has continuity
#46 Ground to chassis is good
#47 12V Power (via MFI relay, likely follows IG1) 12v power when key on
#50 Exhaust cam position sensor signal 12.2v and signal wire has continuity
#53 Intake cam position sensor signal 12.1v and signal wire has continuity
#58 Ground to chassis good
#59 12v Power (via MFI relay, likely follows IG1) 12v power when key on
#60 Power from battery (always live) good
#62 IAT sensor signal 4.6v and signal wire has continuity
#71 Front O2 sensor signal 12.1v and signal wire has continuity (2.6v .2v other wires)
#78 TPS signal 5v and signal wire has continuity
#80 Vehicle speed sensor signal wire has continuity
#91 Knock sensor signal wire has continuity
#92 MAP sensor signal 5v and signal wire has continuity

#44 and #62 are the only ones that seem a little funny but not enough to make car not start.

wreckleford

iTrader: (2)

Battery voltage drops to 1.02 V, rpm shows as 4812.5 for an engine that is cranking over, TPS moves from 12.9% to 1.56%, Fuel trims at -18.5 AND -23, timing at 108 degrees, airflow at 1018 Hz, again for an engine cranking over. None of that makes any sense.

wreckleford

iTrader: (2)

When you say that the signal wires have continuity for the IAT sensor, coolant temp sensor etc. how are you checking for continuity?

This may be what you are doing already, but just in case, If you check between the signal wire and the chassis you should get the voltage reading and the other wire should show continuity with the sensor ground wire. Also the sensor ground wire should not read to chassis ground when the harness is plugged out of the ECU.

wreckleford

iTrader: (2)

Why I say to try the ECU in another car is that you may have made a msitake with your wiring harness that immediately hosed the ECU the first time you plugged it in and powered it up.

ExtremeDSM

iTrader: (95)

I may have had the battery charger hooked up to it but I don't think that would have made a difference.

Went to disable the immobilizer and it will not let me. Something about cant read the rom or some crap. I am pretty sure I know what the problem is there. Had same problem awhile back and had to have some crap done with computer and now I have different computer. Looking into it tonight.

ExtremeDSM

iTrader: (95)

Ok, I am also wiring stupid I think.

I unplugged ecu, connected ohm meter down by the ecu to one side of the signal wire and then to the other side by the sensor. Ohm set to the little speaker thingy and all wires that I said had continuity dinged on my ohm meter.

The error message is Unknown ROM image. EcuFlash could not recognize this ROM image using any of the current definitions.

Good god what have I done!!!!!!!!!!!