[DML] Fuel Enrichment Circuit

[David Sontos <dsontos@xxxx>]

Joe,

I had this forwarded to me by Ann & Ed;

> Sounds like an idle speed circuit problem. Here is a test you can
perform
> to find out if the idle speed circuit is working properly. Remove the
black
> wire from the idle speed microswitch (Parts Book 2 / 5 / 0 item 25)
while
> the engine is idling. The idle speed should increase to 2100 to 2600
Rpm's.
> If there is no change you either have a defective idle speed motor,
ECU,
> connector, or wire problem somewhere in the idle speed system.

When I disconnected the black wire, which was the one on the bottom of
the switch, the car did NOT rev up but started surging.

Ok, now I pulled out my DeLorean wiring diagram and I see two
microswitches, items 151 & 152. My car only has one. Ones located at 8B
and the other is located at 9D on the diagram. At Idle Speed Relay #108
I see a diode #25 in this circuit. Where is that diode located in the
car???

Dave Sontos
VIN 02573


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