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?

You have to match the o2 sensor with the ecu with the maf. I don't know about the maf from an s13, but I'm pretty sure your usdm o2 sensor is not sending the right signals to your ecu. You'll find tons of stuff on this site about that very subject, just do a search. I've also never heard of anyone using the distributor and coil from a bluebird. Everyone uses their usdm parts excecpt for the ecu, maf and o2 sensor. The sr20de harness is good, just check the other stuff and for any vacuum leaks. Those can be had to find sometimes.

Just for your info, my combination of u13 ecu, u13 maf and o2 sensor from a 1989 300z turbo (skinny one) works perfect.

Good luck.

Yeah, I bought a u12 bluebird sr, but it came with internal problems, the head mainly, so they sent me an avenier out of warranty and the distributor on that had an internal coil, a different tps, and the o2 bung on the turbo was bigger, the same as the usdm o2, but I will take that nut off and hope that the other one from the u12 turbo swaps over so i can use the right o2 sensor, which is the skinny one, but that leads me to another problem, when I bought the skinny o2 sensor (cause the one that came with the bluebird was damaged) it had a different connector, and I am not sure on which color wires go to the harness side.

use a u13 ecu/usdm o2/usdm sensors/gti-r maf..it will work fine that way until u get a jwt..

http://www.sr20forum.com/showthread.php?t=152720&highlight=u13+ecu

http://www.sr20forum.com/showthread.php?t=154922

i believe charlie had a gti-r maf

How about getting e-manage?

because i am thinkin of using my sr20de ecu, sr20de maf, and getting e-manage, would this work

good luck with e-manage

good luck with e-manage
why is it tough with that setup?

why is it tough with that setup?
Someone clarify this for the noob = me. :squint:

Someone clarify this for the noob = me. :squint:
sr20de ecu, sr20de maf, and getting e-manage
I have never done e manage before but know a couple people who have to help me and I heard its fairly simple, especially if they have programs on this page

so should I get that setup t bag said or should i go with jwt, or emanage, what one would be best

ok, I decided since my maf had a bad ground and the pin tension on the connector was a little loose, I installed another connector, soldered and heat shrinked the wires and added an extra ground going to the intake manifold, now when I turn the key on I only get 1.3volts to the power supply to the sensor, and 0 to the reference, and for some reason I have a 2.5 ohm resistance to ground on the power wire, and .1 ohms on the ground and signal wire. Does anybody know why this is happening, and i double checked my wiring and its good. I cut the power wire to see if maybe I messed up on the connection, it still showed 1.3 volts, so I checked that connection to the eccs relay, it was fine, I then disconnected the connector from the maf, swapped the ecu, I had the usdm sr20de in by the way, and now it has battery voltage, but I dont want to hook anything back up till I know why this is happening, any help? Thanks

bump, please help, Im stumped

bump

get a jwt.

why did my ecu go bad though?

ok, I took a second look at it and it looked as if there was a good possibility that the wire sheath got into the signal ground and signal power supply connections, does this sound like a possibility of killing my ecu? I swapped another ecu in and I got rid of the wire sheathing and i cranked it over, it still didnt start because it doesnt have the right sensors for it but the ecu didnt go bad, so i am assuming I fixed the problem, and I think I am going to get another sr20de ecu and run e manage.

could i run a u12 ecu, u12 o2, b13 maf and e-manage?

yes you could. just make sure that you set your e-manage up for b13 maf on the input and u12 ecu signal on the output. in other words, make sure the settings on the e-manage will help your ecu and your maf work in harmony, since you won't be running the u12 maf.