In short, my friend blew a hole in the block of his 94 4.0 highoutput. We swaper in a renix 4.0 and put his 94 intake manifold on the renix engine and we found a wire that was broken and can't figure out were it goes. It is in the wiring harness with the plug for the tps. It's 3 wires (orange, grey/black, blue/black) that goes to a plug then from the plug comes 3 black wires that are ripped out. Where do the wires go? I can't take a picture cause I'm posting this from my iPhone.

 

The other item that would be in that harness is the idle air control on the throttle body,you may just have yo trace the harness back,if they are from they will be going to the pcm.

 

ok so we ended up having to replace the CPS and it atleast fires up now. another question i have is that we used the renix motor flywheel with the highoutput tranny, torqueconverter, computer, wiring harness, everything. it fires up an idles but it sounds like its off time and it running wayyyyy to rich. we have to pull the fuel pump relay just to get it to idle. what is the difference between the renix flywheel and the highoutput and if there is a difference, would swapping the highoutput flywheel onto the renix motor correct the timing and dumping too much fuel? sorry for all the questions, we are five 17 year old guys that are in the process of doing a full motor swap with no prior experience what so ever so any help is greatly appreciated.

 

The renix flywheel will not work on the high output motor,you will need to change them. At least you got it to run,mine would not even start. When you look at the flexplates you will see the difference.
Just remember everything in regards to engine controls changed in 91.

 

There are two PN for the flex plate: 33002675 ('88-'90) and 34202497 ('91-) so abovet. is right.