hey sorry for the late reply I had the same code issue in my 90, I sent the ecu back to dsm link and turns out it was a bad connection in the chip, they fixed it and sent it back free of charge. If you have not fixed your issue yet I would look into that, I forget which pin I checked with a mutimeter on the harness connection but it showed no signal to cylinders 2 & 3 and I was losing spark.
Found my other post.
so i swapped in a 91 ecu and the car runs fine looks like it was my ecu after all, now i have to find someone to repair my old one for me so that i can reuse it since it has all my ecmlink data and tuning specs. i will see how long this 91 works in my car cause iam sure i read somewhere that i need to swap some pins but hopefully it will hold out till i get my original one repaired.
oh and the fault in the ecu was the #55 (power transistor 2&3) pin was not sending a signal to the power transistor module
Last edited by Dayonaise; 11-21-2012 at 10:49 AM.
Reason: Auto-merged with previous post to prevent "bumping" within a 24 hour period
Tips on avoiding the auto-merge feature - http://www.dsmtuners.com/forums/faq.php?faq=vb_faq#faq_bumping