Odd.
The two early ones I took apart had stainless discs.
Hmm, wonder if it was a coating of something like SS that failed.
Grumpy
> Well, Garfusion, I think the Lo-res pulse was for when the inevitable
> rusting of the disk happened, and you lose the hi-res disk pulses. ;^)
> Seeing how they mounted the opti right below the water pump, didn't seal
> it against the elements at all, and hardly vented the '92-'94 units (3
> teeny holes in the back plate), they're quite good at holding pump
> seepage, and the little metal slotted disk is quite adept at rusting,
> and rust can easily fuzz up those tiny holes (heavy spark air ionization
> plus coolant plus bare metal? yikes!). Car will keep running (not that
> great, and with a DTC) when you lose the hi-res pulse, but lose the
> lo-res pulse, and that's it. Car doesn't run, and it's new opti time.
>
> I think it was a good idea put together wrong. Accurate timing, yes, but
> that rust thing is sure a killer. They should've used a hard plastic or
> a stainless disk. And at nearly $300 each, them buggers ain't cheap.
>
> -Andrew
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