At 09:31 AM 12/12/95 -0600, Ed Vala wrote:
>Sun, 10 Dec 1995 00:37:28 -0600

SNIP--SNIP

>I then took out the FI black box behind the rear right tail light. 
>Cracking it open revealed a lot of potential questions.  There were a 
>lot of components that had black spots.  One black component that 
>looked like a voltage regulator (thin approx. 1/16 thick x .3 x .4) 
>with 3 prongs was blackened on the circuit board as well as itself 
>:(.  Bunch of the 3.3 uF capacitors are leaking yellow stuff, etc... 
>Does anyone have access to a circuit diagram for this baby? Or can 
>anyone look at their box to tell me what the specs could be for the 
>rectifier so I could replace the burned components.  Some of the 
>Motorola ICs (LM2902N L8625) have distorted spots on them making me 
>question their usefulness.  As you all probably know, the dealer 
>would love to see me walk in asking for one of these boxes!
>
>
The idle speed valve is the culprit in the majority of damaged control
units. When the valve quits humming the control units works itself slowly to
death. The moral here; when the idle speed valve first starts to hang up
from carbon and/or crud clean it then now later. Or perhaps you like
spending extra money <g>. Come to think of it, it's probably a good idea to
simply clean the valve on a regular basis. Say perhaps once a year/10-15k.

Have a Merry Christmas

Dan