When I open the access plate on my ECM (1988 chevy 1/2 ton 5.0L) I see 2
removable chips. The large one is obviously an EPROM which I understand
contains the tables etc. which tell the ECM how to control the engine. I
suppose there is computer code in there also, right? Or is the code in the
other, smaller 16 pin chip? What is the purpose of the 16 pin chip?
The reason I'm asking is that I have a stalling problem that follows one of
my EPROMs (I have 2 ECMs with chips). The problem does not follow the ECM,
only the EPROM. So I'm thinking about getting a speed chip that would
theoretically optimize my fuel economy/power, as well as remove any doubts
about having a bad EPROM. I'm thinking about getting a KC Speed chip
There's another problem I won't go into rignt now that may be computer
related, but it's something I can live with.