another update to idle work

[Soma576@xxxx]

List,

i believe my problem lies within the wiring between the bulkhead connector 
for the black/green wire to the idle speed ECU.

On my idle microswitch, there is the black/green wire and the black wire 
which is ground. however, a test light indicates that i have ground on BOTH 
wires, which would render the switch inoperable since it should be switching 
ground.

when i remove the bulkhead connector, the black/green ground disappears and 
with a meter, i see that the idle switch is indeed switching the ground on and 
off like it should. as soon as i plug the connector back in, both wires are 
grounded. this leads me to believe that the wire inside the car to the ECUmust 
be spliced and getting ground from a previous owner or maybe the diode is 
grounding against something. i have proved that the diode is ok and it is 
somewhere between the bulkhead connector and the ECU. according to the wiring 
diagram, the wire should go straight to the ECU w/o connecting to anything else. 

what i now need to know is where exactly this diode is so i can inspect its 
casing. if i can't find a problem when following this wire, i can run a jumper 
wire between the bulkhead connector and the ECU with a diode in it, howeveri 
need to know what type of diode to buy at radio shack for this purpose and 
how to install it.

any insights are greatly appreciated!
Andy



>>>>>>>>>>.
List,

I have some new information that has me bewildered.
after talking to grady this morning, he recommended i return my wiring back 
to stock on the switch and keep looking for the problem.? i have done so.

it seems that when i put an ohm meter across the two terminals on my 
microswitch, it opens and closes the circuit.? however, when i have my wires 
connected 
to it and i check for continuity on the switch, it will NOT open and close 
the circuit.? this would imply that i have grounds on BOTH ends of the switch 

and thus the switch is rendered inoperable.? 

this was verified by connecting the alligator clip on my test light to the 
battery aux terminal and then touching the tip to each wire that goes on the 
back of the switch.? BOTH sides will allow current to go to ground, lighting 
the 
light up. one side of the switch is the black/green wire and the other is the 

radio noise eliminator and the supposed ground wire.

This is probably not supposed to happen but i am not the best at reading 
wiring diagrams.? i see that on the diagram there is a diode between the 
switch on 
the black/green side and the idle ECU.? if this diode were missing or blown, 
would this give me the problems i am having?

WHERE is this diode located?

Thanks for any info - 
Andy

>>>>>>>>>


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