96' Northstar cranks, will not start

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Northstar Engines and System Technical Discussion Discussion, 96' Northstar cranks, will not start in Cadillac Engine Technical Discussion; I recently just fixed my coolant system on my 1996 Cadillac Eldorado ETC 4.6, I tested it with water to ...
  1. #1
    Ronnie Fierro is offline Cadillac Owners Member
    Automobile(s): 1996 Cadillac Eldorado
    Join Date
    Oct 2013

    96' Northstar cranks, will not start

    I recently just fixed my coolant system on my 1996 Cadillac Eldorado ETC 4.6, I tested it with water to ensure it wouldn't leak, ran good after that, but then my (idiot) self decided only to tighten the reservoir to the first lock, and then took it about a mile or 2 test drive and it then steamed up from the reservoir, got the ignition coils wet, I dried those off, after that it was a pita to start and when it did it backfired and misfired quite a bit, ever since then it won't start. I tested all of the coils, one was bad so I replaced it, still nothing. Also, the dash says to service ignition system and reads a P0300 code, multiple misfires. Could anybody tell me what could be the cause of this? Possibly the ignition control module? Also is there a way to test the ignition control module? Thanks in advanced.

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  3. #2
    Ranger's Avatar
    Ranger is online now Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Woodstock Ill.

    Re: 96' Northstar cranks, will not start

    Pull each coil and spray the contacts with WD40. Then blow them out with compressed air if you have it. Might do the same with the 4 ICM plugs.

    One thread is enough.

  4. #3
    04GrandAmGT's Avatar
    04GrandAmGT is offline Cadillac Owners Fanatic
    Automobile(s): 2001 DTS, 04 Grand Am GT,07 Cobalt(Dont Judge,My fuel Saver)
    Join Date
    Oct 2012
    Manitoba, Canada

    Re: 96' Northstar cranks, will not start

    Did you get it running?

    Need parts for your Northstar Engine? www.northstarperformance.com

    Evrett, Sales Executive of the SureGrip™ Cylinder Head Stud Kit

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