93 Seville STS Will not start no spark HELP!
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Cadillac Seville / Cadillac Eldorado Forum Discussion, 93 Seville STS Will not start no spark HELP! in Past Cadillac Vehicle Discussion; Hello. I've tried a search and spent 3 hours searching but can not find this problem covered. My 1993 STS ...
  1. #1
    Cadillac Tah UK1973 is offline Cadillac Owners Member
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    93 Seville STS Will not start no spark HELP!

    Hello.

    I've tried a search and spent 3 hours searching but can not find this problem covered.

    My 1993 STS 4.6 Northstar had been left at a local garage here in the UK to have the waterpump replaced as it seemed to be leaking slightly, it was left standing for 4 days, was started and put inside for waterpump replacement but it turned out we had the wrong one so it was put back out and parked for 24 hours, with no running or starting issues.

    Yesterday we got the correct pump, went to start it and nothing!! starter motor turns as does the engine but no attempt to even try to start and now we are totally stuck !!

    CAN SOMEBODY ADVISE PLEASE ?

    Checked the following.

    Got fuel
    Checked every fuse
    Checked electrical connections
    checked for a spark by removing a lead and placing a spark plug in the end and contacting metal but no spark when trying to start, so the problem is no spark to the plugs, but why.

    It was totally fine before and now dead

    Garage thought it maybe the factory security but if I'm not mistaken this cuts the starter and fuel pump? etc

    There is a smell of fuel after trying to start a number of times.

    The only thing I've noticed is a clicking noise when the ignition is turned on so the dash lights are on, it ticks or clicks about 6-7 times, it may have been there before but normally I turn the key and the engine starts so would not have heard it before, I only noticed it now as the hood is open and engine not running, this clicking or ticking sound is coming from under the cruise control assembly which is to the right of the engine (drivers side)

    This noise is also present when the ignition is turned off

    Any help would be appriciated.

    Thanks

    Shane

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  3. #2
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: 93 Seville STS Will not start no spark HELP!

    Check all 4 electrical connectors (2 on each side) to the ICM. Maybe one is loose or corroded.

  4. #3
    Cadillac Tah UK1973 is offline Cadillac Owners Member
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    Thread Starter

    Re: 93 Seville STS Will not start no spark HELP!

    Many thanks, will try tomorrow, been told it maybe the factory security, crank shaft sensor or ignition mod, but thats from untrained UK mechanics.

    Just seems weird as it was fine when parked up and now nothing, just spinning over.

  5. #4
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: 93 Seville STS Will not start no spark HELP!

    All of the above are possibilities. The ICM (ignition Control Module) is the "ignition mod". It is located on the rear cam cover and the coils are mounted on it.

  6. #5
    hardrockcamaro@mac.c's Avatar
    hardrockcamaro@mac.c is offline Cadillac Owners Connoisseur
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    Re: 93 Seville STS Will not start no spark HELP!

    Is this the one that was on EBay this or maybe last week?

  7. #6
    Zorb750 is offline Cadillac Owners Connoisseur
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    Re: 93 Seville STS Will not start no spark HELP!

    No it is not.

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