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Swapping 510 ECU for 503 ECU in 1983 240 200 1983

uid 27's pic
posted by  Art Benstein on  Sun Dec 8 11:47 CST 2002
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last visit: Fri Oct 17 20:10 CST 2014
[RELATED]

First thing I wonder is... how much of a spark. A lead melting, smoke producing zap or a tiny blue snap.

There are a few capacitors in your system that could cause the latter, the caps that come to mind are in the clock, maybe in the radio if you have anything more recent than the base model non-digital display AM-FM stock unit. Unless they fully discharged you'd probably not get that little snap again, when you reinstalled the 503.

The 510 is absolutely compatible with the 503. I've swapped them in 83s and 84s without any difference noted in the performance. Though I don't know the differences in fuel mapping, there are a few slight differences like the bias on the ECT sensor and the fuel relay driver transistor output that look like improvements to me. Aside from those tweaks, the only reason I could tell for the 510's release was the heated oxygen sensor added to the late late late 84s.
--
Art Benstein near Baltimore






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