In the Fiero injector system there is a always hot wire going to the
injector and the ECM grounds the other wire to fire the injector
Shadow wrote:
> Well, I tried the voltages on the injector. Both the red and blue wires
were
> tested against ground dead when the car off.
> When the key is ON, the red wire reads 12v, the blue wire shows nothing.
> When the key is cranking, the red still reads 12v, the blue wire, still
> reads nothing.
> When I tested the blue against the POSITIVE, it showed negative voltage.
> I swapped the meter leads, red to battery + and black to the blue wire.
> It showed 3 volts while ON, and it fluctuated as the engine was cranked.
> Any ideas? It doesn't match what R W had posted so I'm wondering what
could
> cause strange behaviour like that.
>
>
> "R W Hughes" <rwhughe@[EMAIL PROTECTED]
> wrote in message
> news:12mp3skb1vh7f8@[EMAIL PROTECTED]
>
>>There are two teminals on the injector, one should read battery voltage
>>all the time, the other will read battery voltage when the key is on and
>>the engine not running and a variable lower voltage when the engine is
>>running.
>>--
>>Robert W. Hughes (Bob)
>>BackYard Engineering
>>29:40.237N, 95:28.726W or perhaps 30:55.265N, 95:20.590W
>>Houston, Texas "The city with too much Oxygen"
>>rwhughe@[EMAIL PROTECTED]
>
>
>
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