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does anybody have a list of the factory markings on the chips?
The one I have is marked on the blue shell "Delco ASHZ 4648"
then on the chip itself is T665 then repeated T665.
then the chip(prom) next to it is marked "3T0110".
I think it is out of an 89 L98 with an auto, but how do I tell?
Also, will an 89 auto work in an 86 auto? I think all it will do is reprogram the cold fuel to eliminate the cold start valve. Right?
then it ignores the cold start temp sensor?
I think it is out of an 89 L98 with an auto, but how do I tell? Also, will an 89 auto work in an 86 auto?
the best way to know what you have would be to plug any of the above into a emulater socket and read (upload)them. 86-89 used the 165 ecm so they would swapable (provided you know the source) and that should work, (you state both auto).
If you can, reading them would still be a good idea.
__________________ 396c.i. 537chp./517tq. (na) on the hose ?
AFR comp. 190, Mini-Ram, Custom billet h.r., 1.6 pro mags, 58 TB, 36 lb. inj.,
Full Manual A-4, D-44 cryo'd w/4.10, QA-1's, 28x10x15 dr's
ok, my other chip is an arap 4194, and it came out of a 4+3 86 corvette. I tried it in my auto car when I got the replacement computer, and there was no torque converter lockup, and the up shift light was on all the time.
The ASHZ chip was in a replacement computer I got from a corvette wrecking yard. When I couldn't get the engine to run, I changed the memcal and voila!
The last one I have is ABWN 1606 and then 8654. I can't find that one on any chart.
Last edited by coupeguy2001; 12-01-2007 at 12:39 AM.
This might help you, I have a 1989 that scans as a 1986 using a Actron scanner. I have not removed my ECM yet to check numbers or codes to see just exactly what I have. But from what I can tell it does seem like I do have at least a 86 PROM in mine and it runs just fine. I have had the car for 10 years with only issue being a little stuborn on cold starts. You are correct, only difference in 86 to 89 is the 86 had 9th injectot for cold start. I am still looking for a stock replacement PROM for mine. Good luck with youres.