The chips themselves are old-school hardware. Over the years I've seen both
data and executable code memory contents change by themselves in more than
one of them. According to journals that I occasionally read this is most
likely to happen as a result of increased cosmic ray energy during solar
flares/storms but some chips are more leaky than others and will drop bits
spontaneously with age.
----- Original Message -----
From: "bvl" <[email protected]>
To: "Miatapower Miata Power" <[email protected]>
Sent: Thursday, April 28, 2011 3:40 AM
Subject: Symptoms of failing Link chip/static RAM?
I know its old school, but the MK2 on my 1.6 92 has been running like a
champ for years, until
recently when I have had some really odd behavior crop up.
In the past few months I have had 3 incidents where something very odd has
happened all
on its own: Master Fuel has changed on its own from 74 (where its been
forever) to 140.
This makes the car run really, really poorly as you might imagine :)
I can't think of any reason this should occur. I normally run with just a
serial
link attached to the car. When it first occurred, I pulled an older DLL
Log, diff'd
the zone map, and MF was the only value changed.
Its not a single bit off in its value, so one bit did not just flip:
several I think would have
had to to go from 74 -> 140 assuming its stored in a single byte.
Swapping in a new chip is a piece of cake: probably more hassle for FM to
ship it to
me (and there in lies the rub: you can't just order one thing from FM...I
get addicted).
Figured I would toss it out to the community. Its spring...top is very
much down :)
- b
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