On Fri, 20 Jun 1997 20:11:33 -0500 "John H. Fleming"
<JFleming3@compuserve.com> writes:
>>My 85 Westy is running very rich.  Symptoms are black smoke, poor gas
>>mileage and lack of power.
>>The following parts were checked by replacing with a known good part
>>fuel injectors (mine weep a little, but not serious)
>>coolant temperature sensor
>>ECU
>>Air Flow sensor
>>Oxygen Sensor
>>
>>The fuel pressure is OK (30lbs).
>>Fuel pressure regulator is OK.
>>Timing & advance is OK.
>>cylinder pressure is relatively OK (125 psi on 1&3, 150 on 2&4).
>
>>>Hi =
>
>>>I had the same thing with my 85 westy turned out to be a bad wire 
>going=
>>
>>>from the o2 sensor to fuel injection computer. The wire is coax and 
>was=
>
>>>kinked by something in the harness, giving the computer the full 
>lean
>>>signal, so the computer responds with full rich.
>>>good luck
>>>joe 85 westy 177k
>>>
>
>=46rom the O2 sensor to where it connects to the wire harness is a 
>single=
>
>wire (no coax).  From the connector to the ecu it is coax.  The shield 
>is=
>
>connected to pin 6, a wire from the air flow sensor.  I found the 
>center
>conductor of the coax is shorted (intermittently) to the shield.  Are 
>you=
>
>saying this is NOT OK?
>Thanks
>John Fleming
>
>85 digismoke
>
Not ok, should not be shorted to the shield at any time!!