3sgte swap, ECU Question Options

[115celi]

Basically, I am middle of a 2nd gen 3sgte swap and my wiring is setup for a 90-91 ecu (pinout from DR Tweak). It cranks but there is no spark. We have checked the igniter, coil, distributor and wires using the BGB from celicatech, and they all check out.

I went to google to see if I could find any info and ran across a web-site with some ecu part numbers. http://www.toysport.com/webpages/WebUpdate...A20ECU20WEB.htm
I found an ecu that had 89661-20760 for the part number and was wondering if there is a difference between this one and the 89661-20750?

I thought mine was right, I thought the part number on the ecu was 89661-20750 but part of the 5 is missing and it isn't really legible. I figured it was right based on the part numbers listed in a thread I found.
JDM 185 ecu's-
89661-20750=89/10-90/03(superceded to 20751)
89661-20751=90/03-91/08
89661-2b310=91/08-92/02
89661-2b280=91/08-93/09

Does anyone know if there is any difference between the ecus with 89661-20760 and 89661-20750, thanks.

[CilverSeliST205]

If it turns out that you have a good ecu and wiring, check your igniter's ground connection (igniters bracket) and make sure that it gets good ground - mine had a thin layer of rustage and that made my car crank over with no spark

[115celi]

If it turns out that you have a good ecu and wiring, check your igniter's ground connection (igniters bracket) and make sure that it gets good ground - mine had a thin layer of rustage and that made my car crank over with no spark

Thanks, this fixed my spark issue, but it still won't start.

I am getting codes 22,24,31,32,41 and 51. I am going to trouble shoot those sensors tomorrow before work.
Anyone have any ideas? Thanks alot for all the help.

[toyotacrazy]

If it turns out that you have a good ecu and wiring, check your igniter's ground connection (igniters bracket) and make sure that it gets good ground - mine had a thin layer of rustage and that made my car crank over with no spark

Thanks, this fixed my spark issue, but it still won't start.

I am getting codes 22,24,31,32,41 and 51. I am going to trouble shoot those sensors tomorrow before work.
Anyone have any ideas? Thanks alot for all the help.

Do you have the correct ecm for the engine? And was it wired using the correct wiring diagram?

JDM 185 ecu's-
89661-20750=89/10-90/03(superceeded to 20751)
89661-20751=90/03-91/08
89661-2b310=91/08-92/02
89661-2b280=91/08-93/09