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IwinUlose
08-22-2008, 03:04 PM
Got a question to see if you guys would like to tackle the job. 96 GT with a 4v 4.6 Swapped currently running on the Cobra harness and Computer. Would be willing to tackle the job to make it run off the GT computer an harness that way all 4 O2's are working?
S&R performance
08-22-2008, 07:01 PM
Are you trying to get all 4 O2s working for emissions or something? With the proper setup you shouldn't need more than what the Cobra computer supports.

Thanks for the kind words.
IwinUlose
08-23-2008, 03:14 PM
Bobby, This is Adam..... No the Cobra supports 4 02's currently it is only running on the front 2. Brian from EFI-Unlimited did some work on the car previously. But The issue i'm having is it is overfueling. I've already replaced the plugs and they are fuel fouled again. It really needs to be tuned again. But i have a few more mods i need to do before it gets a full tune.
EFI-Unlimited
08-25-2008, 01:56 AM
IWinUlose,

Is this Hurstmeister's car? There is no need to use the GT PCM to utilize all the O2 sensors, but more importantly, why are you concerned about using the rear o2's? Having more o2 sensors wont fix the fueling problem. If this is Hurst's car, I am pretty sure all I did for that car was shut off the PAT's system, and possibly the rear o2's. I didn't do anything to address any driveability problems. If you are fouling plugs, there is definitely something wrong, and can (and should) be fixed.

Brian
EFI-Unlimited
IwinUlose
08-25-2008, 11:14 AM
Yes it is. It is overfueling. the rear o2 arent even plugged in the connectors between the 2 harness are different. But i think you turned them off in the PCM. Because i scaned the computer to see what codes were causing the CEL. I only got 2 codes one for a SAI system and the IMRC malfunction
EFI-Unlimited
08-25-2008, 12:58 PM
Yes it is. It is overfueling. the rear o2 arent even plugged in the connectors between the 2 harness are different. But i think you turned them off in the PCM. Because i scaned the computer to see what codes were causing the CEL. I only got 2 codes one for a SAI system and the IMRC malfunction

SAI system? Do you remember specifically what the code numbers were? I am pretty sure Jim and I had the IMRC's working, but I cant remember for sure.

I have something to checkout. Check the forward o2's for +12v to the heaters. On the o2 sensor side of the o2 plug, there will be a black wire, a gray wire, and 2 white wires. One of the 2 white wires should have +12v with the key on. The other white wire should have ground from the PCM to activate the heater when the engine is cold.

Jim used the Cobra trans harness which is surprisingly different from the GT harness. I suggest checking that in the event we didn't power to the o2 heaters. This will cause a rich condition at mid cold start. I am not sure if both o2s run through the trans harness though.

Brian
EFI-Unlimited
IwinUlose
08-25-2008, 04:14 PM
SAI is the secondary air injection system. I remove the 2 vacuum lines that were running to were the actuator were. The o2 heaters are working i have already checked that. But it is running extremely rich. You can stand behind it an watch it drive down the road an see the plumes of black smoke behind the car. I did a oil change today and you could smell the presence of fuel in the oil. Right Now jim has the actuators disconnected and tied the IMRC open.