Question about 1990 Cadillac Eldorado

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1990 cadillac wont start

1990 cadillac will not start, displays theft system someytning or other, wait 3 minutes, then still wont start.

also, changed the trunk lid motor and still wont go down, i put same wires back to as were on old one, doesnt appear to get power. all the fuses look good.

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  • mlmtbmx2 Jun 24, 2009

    How do I get it started in the mean time to get it to a mechanic?

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My 89 cadillac was running great yesterday i get in it this mourning and it starts right up it run for like 10min then died and would not start back i jumped it off it ran for a couple of min then died now its like the battery is dead and the fans are running with out the key on now and is just clicking when i try starting it now what is the problem?

Posted on Nov 02, 2015

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It's your PATSII security system...Any good mechanic should be able to fix this for $50-100 WITHOUT REPLACING THE BCM (tell them I said so).
Good Luck

Posted on Jun 23, 2009

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1 Answer

1990 cadillac seville - When I try to start the car nothing happens and the computer readout says, "Starter diabled due to theft system, wait three minutes, 2 minutes, 1 minute, start car". So I...


You have a broken wire in the steering column. there are ways to cheat, but to fix it right, the dealer is the best option. Cost will probably be in the 400 dollar range for a new ignition tumbler, install, and programming.

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your key may be worn there a small sensor on your key that the ignition senses. the ignition tumbler may be worn out to. try using your extra key. you may have to have ignition key and tumbler replaced and reprogrammed to your vehicle. hope this helps

Feb 02, 2011 | 1990 Cadillac Eldorado

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My 1990 Cadillac Seville says (starting disabled,anti-theft system. wait 3 minutes then start.)But still does not start.


You may have a failed ignition lock cylinder The wires that are attached to the lock cylinder are probably broke therefore the resistor value of the key pelet is not getting to the theft system module there fore without tha signal the car will not start. to repair the car will need a new lock cylinder and at least one new key

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First thing to try is another key, after waiting 3 minutes.. The chip in your key might be unreadable or dirty.

Mar 29, 2009 | 1993 Cadillac Eldorado

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My Mom's car also did this, turned out to be the Starter.

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How can I bypass a anti auto theft system on my 1990 cadillac seville?


I Have A Seville 1990, When That Happen To Me I Got The Inginion
Replaced Problem Solved. What Is Happening Is Your Key Has A Chip And That Chip Is A Resister And When The Valve Is Not Sented To The Computer It Disengages the Fuel Pump And Than Tells You To Wait. Soon All That Will Happen Is You Will Get The Wait 3 Mins And It Will Never Start, A Good Locksmith Can Take Care Of This For You And That Will Save You Some Money. Cause If You Go To The Dealer Ouch They Will Hit You Up. But I Asure This Is How It Will Happen Cause It Is How It Happen To Me
And Sorry There Is No By Passing The Computer

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Starter disabled due to theft system


the wire that goes to the ignition to the anti theft device is probably broken if you call a good locksmith they can go in through the steering column and fix it same thing happened to my 95 eldorado apparently cadillac designed the anti theft system to coincide with the ignition and is connected to the ignition with two wires that turn as the key is turned the wires twist and eventually they wear out

Jul 11, 2008 | 1995 Cadillac Eldorado

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