93 Eldorado No Spark Condition SOLVED
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Cadillac Seville / Cadillac Eldorado Forum Discussion, 93 Eldorado No Spark Condition SOLVED in Past Cadillac Vehicle Discussion; Went to start my wife's 93 Eldorado (4.9 L) the other night after driving to see fireworks on July 4th; ...
  1. #1
    bigchosen is offline Cadillac Owners Member
    Automobile(s): 1993 Eldorado
    Join Date
    Jul 2011
    Age
    29
    Posts
    1

    93 Eldorado No Spark Condition SOLVED

    Went to start my wife's 93 Eldorado (4.9 L) the other night after driving to see fireworks on July 4th; wouldn't start. Battery was fine, starter was doing its thing, so I know to check for spark and fuel. I verified a no-spark condition and then checked the HUD for any codes.

    It displayed the following (current) code: E012

    Since it was late, I left the car there and got a ride home. Found my way to this forum when I got home, and searched around to find that E012 means "No Distributor Signal."

    Super thanks to SubieHo and his thread titled: 4.9L '93 Seville: How do I replace the pickup coil?

    Having the same error code, but not sure exactly which of the four electrical parts in the distributor had failed, I went back to the car with my tools. Using my multimeter I verified that the pick-up coil was OK using the following procedure.

    PICK-UP COIL TEST #1:
    Set multimeter to measure Resistance (Ohms)
    Remove pick-up coil leads (2 wires, green and yellow) from Ignition Control Module (ICM)
    Connect meter to pick-up coil yellow wire and distributor metal casing (ground)
    Meter should read infinite resistance (open circuit) at all times

    PICK-UP COIL TEST #2:
    Set multimeter to measure Resistance (Ohms)
    Remove pick-up coil leads (2 wires, green and yellow) from Ignition Control Module (ICM)
    Connect meter to pick-up coil yellow wire and pick-up coil green wire
    Meter should read near a steady state value between 500 and 1500 Ohms at all times

    SubieHo's pick-up coil (thread referenced above) failed TEST #2, but my pick-up coil passed both of these tests. Since the wiring harness looked to be in OK condition, and the computer didn't throw the E041 (No Cam Reference Signal from Ignition Control Module) code, meaning that the hall effect camshaft position sensor inside the distributor was also probably OK, I reasoned that the ICM was likely at fault.

    O'Reilly Auto Parts had a lifetime warrantied version of the ICM in stock (Part Number: BWD CBE15) for $31.99.

    After replacing the ICM (using the instructions provided with the part, and some included silicon grease) I reinstalled the distributor cap and put everything else back together (see QUICK NOTE below).

    QUICK NOTE: Removing the air box made it 500 times easier to work on the distributor; it doesn't take long and it's really easy to reinstall when you're finished.

    Turned the key, fired right up.

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  3. #2
    amunderdog is offline Cadillac Owners Connoisseur
    Automobile(s): 1994 SLS x 2 ---- 1993 Eldorado Sport ----- 1994 Deville 4.9
    Join Date
    Feb 2010
    Location
    Sunbright, TN
    Posts
    1,298

    Re: 93 Eldorado No Spark Condition SOLVED

    That was a great story
    Glad you got it worked out and the repair was not real expensive or hard.
    You had a great day

  4. #3
    curtc's Avatar
    curtc is offline OCD - Obsessive Cadillac Disorder
    Automobile(s): White Diamond 06 STS V8 RWD 1SF F55 HUD/ACC NAV - 130k
    Join Date
    Jul 2005
    Location
    Burnsville, MN
    Age
    29
    Posts
    5,549

    Re: 93 Eldorado No Spark Condition SOLVED

    Now THAT'S how you avoid spendy stealership visits! Nice work

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