HEI DISTRIBUTOR PROBLEMS

I owned a similar 1986 caddy

12 Volts on pink wire to dist with key on

The top of the cap is the HEI Ignition Coil

Inside dist is the pickup coil (no crank sensor)
& ignition module with the 3 or 4 wires

Maybe the module failed- if you have no spark
at plug wires

You can try Alldatadiy.com for the diagrams.

Im sure youve figured this out, but just in case!

Find the connector that plugs into the distributor.

Follow the rectangular shaped top part on the distributor
to the opposite side away from the connector.

Number 1 wire is at the right corner of the rectangular
top part when youre standing at the front left corner
of the car by the battery and looking along that rectangle on top.
Its right against the thumbscrew that tightens down the air
filter housing.

number 8 is the next one to the left of number 1.

can post a pic if you need.

Your 4.9 has a distributor, correct? If so, it does not have a crank sensor, per se, it has a hall effect sensor in the base of the distributor, also called a coil pickup, just below the rotor. It has a harness that goes through the distributer housing.cap and plugs into a harness, and is pretty easy to replace.

taken from autozone.com

from the factory service manual radio diagrams.

1994 Cadillac Deville Sedan Car Radio Wiring Guide

Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Gray
Car Stereo Dimmer Wire: Brown
Car Stereo Antenna Trigger Wire: Pink
Car Audio Front Speakers Size: 4′ x 6′
Car Audio Front Speakers Location: Dash
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Car Audio Rear Speakers Size: 6′ x 9′
Car Audio Rear Speakers Location: Rear Deck
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue

This should help, firing order is counterclockwise, 1,8,4,3,6,5,7,2.

1984 Cadillac Full Size Cadillac RWD
4.1 liter V-8

IF THE DISTRIBUTOR IS INSTALLED CORRECTLY IE; THE STICKOUT (WHERE THE WIRES FOR POWER/GROUND CONNECT ON THE BOTTOM SIDE) #1WIRE GOES ON THE SIDE TOWARDS THE BACK(WINDSHIELD) THEN IN A COUNTERCLOCKWISE DIRECTION ITS 8-4-3-6-5-7-2

i have two codes on my 92 cadillac sadan deville that read e 12 and e 96. i understand what they both mean. e12 is 'no distributor signal', and the other e 96 is 'torque convertor is overstrewsed'. i know that the toruque convertor is a big project itself, so im goin to send that into the professionals. but i might be able to fix the distributor, if it is the cap, or a false ground wire which hopefully it is. there is about 170,000 mi, and have gone threw alot of parts that i installed myself, but im not goin to let her go yet she still got alot of miles to go. i just need help on checking out the distributor cap for replacement.