PDX_SER

ok, I just swapped a avenier motor in my 91 sentr se-r and fired it up and it doesnt idle, and when I give it some gas it misses quite a bit and runs super rich, the plugs foul after a few minutes, now it wont start, I looked over everything and it all looks plugged in and good, its a u12 bluebird ecu, u12 fuel rail, tps, distributor, coil, sr20de o2 sensor, and a maf from a s13, the motor itself checks out fine with compression and good cams, so i am thinking it might be the maf, does the oem maf for a usdm sr20de work with a u12 sr20det? I also found around 20 ohms resistance on the maf and found the main motor to chassis ground was loose, so I fixed that and then it had 5 ohms resistance, so I hooked up a jumper for the ground and it still ran bad, any help? oh and I am running the sr20de harness too. If I disconnect the maf it still wont idle but if i give it a little gas it will run steady at aroun 1500rpm? I swapped in my sr20de ecu, it idled okay with a temporary jumper to ground for the maf cause it had a .014 volt drop, when I took off the extra ground while it was running it died, and before that I noticed the resistance would rise from 5 ohms to 15 ohms from plugging it in and disconnecting it, so I figured in the possibily of bad pin tension in the connctor so I wired in a whole new connector , I added on an extra ground going to the intake manifold, soldered and heat shrinked all connections, and when i plugged it in and turned the key on I get 1.3 volts to the power wire, 0 to the signal, the signal has .2 ohms to ground, the ground has the same, and the power wire has 2.5k to ground, and it doesnt run, so since I had another ecu laying around(a u12 bluebird), I cut the power wire and took off the extra ground just to be safe, and now I have battery voltage to the power wire, but I havent hooked it all back up yet fearing that I will fry an ecu, could that sheilding have anything to do with it, or did i screw up in another way? I checked the wires to and they are wired in right, im so lost on this, any help please

racerdude7730

you know what man i wish i knew because im having the same problem and no one seems to know the problem they keep telling me its my fuel system but that is all looking good does yours also when you go to drive it you have to mess with the gas to get it to even rev and then once i do get it going around 2500rpm it starts to buck and just try and die out and then you can hitt it back fired and stuff.