"CCC 202"  wrote:                       91 olds 3.8L

I need a free wiring diagram to trace the distributor
reference pulse from distributor to ECM. (Code "41" -
no pulse from/to).   Or at least color codes for
distributor wiring.     Can anyone point me to where
on internet I can find this info for free???
_________________________________________

You can try googling every descriptor imaginable
(wiring diagram/Oldsmobile/distributor/etc.).

For free wiring diagrams I have had good success
at public libraries, copying the appropriate pages
from automotive reference manuals.  Well ... not
completely free - copies are 10-15 cents per page.

Good luck.

Rodan.

I have found that autozone.com is a good source for getting free repair
guides including wiring diagrams for most vehicles. Just add your
vehicle and select repair guides. They do not have all of the newer
vehicles but most of the older vehicles they have.