NB1 (2000) ECU
06-21-2023, 10:36 AM
#1
Newb
Thread Starter
Join Date: Oct 2017
Posts: 24
Total Cats: 2
NB1 (2000) ECU
Looking for a friend of mine who has a NB1 2000 miata and we believe it needs a new ECU (for a manual transmission of course :-). If anyone has a good condition working ECU, pls PM me.
Thanks,
Nik
Thanks,
Nik
Last edited by 24n46; 06-21-2023 at 12:46 PM.
Reply
0
0
06-23-2023, 12:21 PM
#4
Newb
Thread Starter
Join Date: Oct 2017
Posts: 24
Total Cats: 2
We found a model number matching ECU and it is currently in transit. Thanks to all who helped.
I should add a little information on what I learned in case it helps someone else. I posted in the WTB classifieds here because most of us on this forum will get rid of our stock ECUs and so I watned to inquire here.
Jacob (watterson02), was the first who found his and offered to sell it to us. As the part number for his ECU was different than what we had, I started to look into the compatability of the ECUs. In the process we found out that my friend actually had a CA car (we bought it used on the east coast so we did not know it was a CA car). Apparently the 99-00 CA emissions cars have its O2 sensors in the engine bay and both are before the CAT. Jacob confirmed his '99 had its rear O2 sensor towards the back behind the CAT (and of course the front one was in the normal place in the down pipe). The wiring diagram for the 99-00 also showed that the O2 harness has its shielding connected in the CA emissions cars and it is not connected in the Federal emissions cars (at least that is what I can surmise, maybe incorrectly, from the wiring diagrams). All this put me in doubt whether the ECUs are compatible. We could not find much info online. There are only two possibilities: 1) the cars are wired separately but the ECUs are all the same and they are programmed to adapt to the CA or Federal emissions wired cars, or 2) the ECUs are programmed differently.
Anyway we decided to try and find one available with the same model number printed on the ECU just because we had already spent a lot of time checking wires, plugs, ignition coils, fuel injectors, sensors etc before we concluded the ECU had gone bad. Also my friend wants to keep his car stock and of course drive it without throwing a CEL. Worst case would be for somoene who gets a stock ECU that is doing something wierd, they should check where the O2 sensors are located and try to relocate the rear one (and maybe figure out the connection for the shielding in the O2 harness) that is required by the ECU (from what I gathered reading online the CA emissions cars also have wiring already there for the rear O2 sensor behind the CAT in the regular place you'd find it - I do not know this for a fact as we've not had to lift the car and verify).
I know this info is not for the turbo or swap guys but somewhere down the road maybe this will come up on a search and someone can save themselves some trouble.
Nik
I should add a little information on what I learned in case it helps someone else. I posted in the WTB classifieds here because most of us on this forum will get rid of our stock ECUs and so I watned to inquire here.
Jacob (watterson02), was the first who found his and offered to sell it to us. As the part number for his ECU was different than what we had, I started to look into the compatability of the ECUs. In the process we found out that my friend actually had a CA car (we bought it used on the east coast so we did not know it was a CA car). Apparently the 99-00 CA emissions cars have its O2 sensors in the engine bay and both are before the CAT. Jacob confirmed his '99 had its rear O2 sensor towards the back behind the CAT (and of course the front one was in the normal place in the down pipe). The wiring diagram for the 99-00 also showed that the O2 harness has its shielding connected in the CA emissions cars and it is not connected in the Federal emissions cars (at least that is what I can surmise, maybe incorrectly, from the wiring diagrams). All this put me in doubt whether the ECUs are compatible. We could not find much info online. There are only two possibilities: 1) the cars are wired separately but the ECUs are all the same and they are programmed to adapt to the CA or Federal emissions wired cars, or 2) the ECUs are programmed differently.
Anyway we decided to try and find one available with the same model number printed on the ECU just because we had already spent a lot of time checking wires, plugs, ignition coils, fuel injectors, sensors etc before we concluded the ECU had gone bad. Also my friend wants to keep his car stock and of course drive it without throwing a CEL. Worst case would be for somoene who gets a stock ECU that is doing something wierd, they should check where the O2 sensors are located and try to relocate the rear one (and maybe figure out the connection for the shielding in the O2 harness) that is required by the ECU (from what I gathered reading online the CA emissions cars also have wiring already there for the rear O2 sensor behind the CAT in the regular place you'd find it - I do not know this for a fact as we've not had to lift the car and verify).
I know this info is not for the turbo or swap guys but somewhere down the road maybe this will come up on a search and someone can save themselves some trouble.
Nik
Reply
0
0
Thread
Thread Starter
Forum
Replies
Last Post
