Ok. I've gotten this far, but now I need some help.

I went through the '97 Montero FSMs and went back trough the '97 Sport FSMs. I went through the harnesses and noted every pin that's populated on the Sport M/T harness as well as the Montero harness. Amazingly enough, 99% of the pins on both the Montero ECM and Sport harness match up.

This is what I have so far ...

I'm missing Montero ECM pins 7, 60, 52 and 59 on the Sport harness. 7, 60 and 59 are obvious - the harness is for a M/T and these are A/T specific.

I have no idea what Montero ECM pin 52 is for. I don't have anything like this on the Sport. I haven't found anything in the FSMs. What is this? It doesn't go anywhere; its just a single wire connector.

There seems to be no equivalent on the Montero ECM to pins 41 and 77 on the Montero Sport harness. The only reference to the evap ventilation solenoid and fuel tank differential pressure sensor is for the Montero CAL ECM. Did the FED '97 Montero really not HAVE these??? The other evap and EGR stuff is there - how do they not have those??

The ONLY non-M/T-A/T related pin that appears to be different between the Montero and Sport is pins 9 and 32, respectively. The evap purge solenoid.

The Ignition Switch-ST GND (M/T) or P/N switch, pin 91, is on both the M/T and A/T Montero and Sport and AFAIKT, do exactly the same thing. The M/T has the clutch pedal switch and the A/T has the P/N selector switch - the effect is the same.

• 
  Montero -- Desc
  7 -- ELC-4 A/T Control Module C-140 pin 45; Engine coolant temp signal
  60 -- ELC-4 A/T Control Module C-140 pin 46; MIL request signal
  52 -- Ignition timing adjustment connector A-44
  59 -- 4WD Operation detection switch
  9 -- Evaporative emission purge solenoid
  
  Montero Sport -- Desc
  41 -- Evaporative emission ventilation solenoid
  77 -- Fuel tank differential pressure sensor
  32 -- Evaporative emission purge solenoid
  
  Both -- Desc
  91 -- Ignition switch-ST GND <M/T>, P/N switch <A/T>

So, this is what I did. I already have my Boomslang harness for the AEM F/IC - which is just a straight-through Male to Female patch harness. I disconnected the AEM F/IC and installed the loop-back plugs so it'd just be straight through ECM to factory harness. Then, I wired pin 32 on the Sport harness side to pin 9 on the Montero ECM. Everything else matched, so I plugged the Montero ECM into the Boomslang - which then plugs into the factory harness.

I turned the key to on (not trying to start the vehicle) and everything seemed to come up. I got the MFI relay click and seemingly power to everything. Nothing started melting, at least. So far, so good. Then I tried to start it. No love.

The engine turns over and sounds normal. There's no weird noises or behavior. It just doesn't start - doesn't even TRY to start. Turned everything off, tried again a couple times and the same behavior each time. I have two Montero ECMs (from different sources) so I tried both - same with either one ECM. I removed the Montero and plugged in the Sport ECM and it immediately started. I let it idle for 3-4 minutes and then turned the vehicle off. Unplugged the Sport ECM and pluged the Montero ECM back in. THIS time it sounded like it was trying to start for the first several revolutions, but then went back to sounding the same as the first try. It sounds like its getting no fuel - how that can be I don't know since everything according to the FSMs matches up.

I've cycled the ignition on/off a dozen and a half times at least and tried to start it half a dozen times. Then I plugged my OBD scanner in and checked for codes and the drive stuff. There are no OBD codes and the only drive stuff that isn't cleared is the stuff you actually have to drive the vehicle to clear. Basically, it looks EXACTLY like my Sport ECM looks after you do a clear, before driving it for the first time.

I spoke to the lead tech at the dealership this morning and he was actually a little shocked that it didn't just start up. THAT makes me feel good. <img src="/forums/images/graemlins/frown.gif" alt="" />

I know 52 and 59 won't prevent the vehicle from starting.

9 <--> 32 work or I'd get a code. Either way, won't cause a no start.

41 and 77 shouldn't case a no start, I would think. They're there and powered, and routed to pins 41 and 77 on the ECM. I don't know if this is/or would cause a problem as I don't know what those pins ARE really.

7, 60 and 91 are the ones that bug me. I'm PRETTY sure that 91 is fine - that should work irrespective of whether its an M/T or A/T as the functionality of circuit at the end of the day seems the same.

7 and 60 ... I don't know. I don't drive A/Ts so I don't know WHAT these really do or don't do. 7 supplies ECT to the TCU and that's all AFAIKT. 60? I don't know ....

I am in desperate need of some insight and ideas at this point from the Montero crowd.

Edward