Community Forums:

Hi Bill,

Thanks for this tip about my 850 with no spark. My manual doesn't have much
for wiring diagrams (Chilton seems almost, but not quite useless.) It also
does not mention relays.

Relays 101 thru 104 near the fuses are stamped with the numbers, but the
remaining three identical cubes have no numbers on them. However, the
stamped cubes look as if they are counting in a clockwise manner, so I
surmised position 106 is the middle cube. I did replace it with one from
the parts car, and do have power at the coil, but still no spark, nor did I
get a code working either.

So I'm still puzzled about all this.

One other thing is that after the car had been running there always was a
sound, humming or buzzing, coming from under the cover where the throttle
cable connects to the intake. I can't remember for sure if that used to
come on also whenever the key was turned ready to start the car. However,
it doesn't make any sound. I do hear the fuel pump come on when the
ignition switch is initiated.

Such grief; most of the time the 850 is a great car!

Jim