96 ecu wiring

Ahah i have the megasquirt connections. Im just not sure what connections on the ecu are the right ones . I have that harness but instead of running a whole new harness i would like to use the stock harness and just wire the ms where the stock computer is.

You should try to track down marclar and see if he still has MS to stock ECU plug adapters.
But, His might have OBD1 only. Also, dont use the chiltons for the wiring digrams, it's wrong for the 96's.

I knew all this 96 obd bullshit would comeback to haunt me Yeah im just testing out to see if anyone could give me the info i needed before i have to buy a whole manual for a couple of pages sad

Why did you cut the air bag box out?

This was a spare car going to the junkyard so i cut everything that was in the center council

hmmm so. marclar has made this next to plug and play? just make new wiring for the Map? everything else is taken care of? for the 95 and down obd 1 cars any how?

what happens if the battery goes dead? the tune is Burned into the ECU and wont be lost, correct?

woowoo16 said:

I knew all this 96 obd **** would comeback to haunt me Yeah im just testing out to see if anyone could give me the info i needed before i have to buy a whole manual for a couple of pages sad

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isnt the manual an online file :roll:

Well if anyone doesnt have the info does anyone know what it takes to swap over to a 95 harness

whats different between 95 and 96 engines

what would i need

The only difference between the 2 engine is that one is OBD1 and the other is OBD2. 91-95 has the edis module on the drivers side fender and the 96+ has it build into the ecu itself. Depends on what you are going to control. Fuel only, then all you need to do is tie into the following sensors Clt, Iat, Tp,and O2 sensor. From personal exsperience I highly recommend you get the Gm Coolant and IAT sensors seeething that MS is calibrated for them already. Using the stock sensors, you will have to calibrate them figuring out what Ohm reading corresponds to what tempature reading. If you go the fuel and spark route, Just leave the stock harness in the car and go grab an EDIS modue from a 91-95 escort and the complete harness that the edis module connects to and just wire that in. Leave the factory computer in to control the fuel pump and prime pulse settings. If you need to go back to stock all you would have to do is plug the stock sensors and fuel injectors back in and call it good.

Do you have a picture of the edit module . I do plan on controlling fuel and spark and was planning on using the gm iat and coolant temp when i ordered a wideband to hook into it. What exactly does the edis replace I dont even know what it means ( going to google right after this to find out )

http://www.dainst.com/info/edis/edis.html

okay found it So instead of the edis being used as a separate module its used as the stock computer. But if i switch to the pre95 module what pins would have to be removed in the 96 ecu

On the other hand would you even recomend fuel + spark tuning?

You are missing the point. You dont have to remove anything from your factory harness. The edis module mounts on the side wall and and you would run everything off of that. The edis moduel connects to the coil pack, crank sensor, and to megasquirt. Go to Megamanuals.com and look up edis install and it will give you all the pictures that you need. You will need a seperate harness for the injectors, edis, coil pack, and crank senor. You can tie in to the tps and o2 sensor to get a reading. Sice you are getting the Gm sensors then you would wire them in. I highly recommend that you get a Relay Board to make everything esier to connect to.

96 wiring is the same as 3G's so look there if you need wiring help.

alxdgr8 said:

96 wiring is the same as 3G's so look there if you need wiring help.

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Minus the IMRC section.
Did 3g ever switch to a 6 wire MAF, or is that a Zx2 only thing?

Jeffescortlx said:

alxdgr8 said:

96 wiring is the same as 3G's so look there if you need wiring help.

Click to expand...

Minus the IMRC section.
Did 3g ever switch to a 6 wire MAF, or is that a Zx2 only thing?

Click to expand...

The 96 ECU actually has the option for IMRC control, it's just turned off so with the correct wiring you should be able to get it functional without an external method like most SPI swaps.