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Gina Genz-Giannoni Posted on Jul 30, 2014
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1989 cadillac sedan deville won't start after leaving key in the on position (while not running), killing the battery?

I left the key to the on position and it killed the battery and now it won't restart. Checked fuses, relays, circuit breakers. Seems to be no fuel pressure, also there is no spark.

1 Answer

Dan Jacobs

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  • Cadillac Master 808 Answers
  • Posted on Jul 30, 2014
Dan Jacobs
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Leaving the key on can overheat the the ignition system burning up the coil and control module

5 Related Answers

Anonymous

  • 607 Answers
  • Posted on Mar 26, 2009

SOURCE: 1989 Sedan DeVIlle blower motor keeps running and kills battery

sounds like you have a faulty blower module. When looking at the blower motor under the hood, the module would be located about 12 inches to the right mounted on the a/c evaporator housing. It has 2 electrical connectors on it

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Anonymous

  • 10319 Answers
  • Posted on May 30, 2009

SOURCE: was running fine but doesnt want to start now

Fords have the reset switch option only. Relays are mounted on the firewall

Anonymous

  • 15935 Answers
  • Posted on Jun 11, 2009

SOURCE: cannot locate sedan deville fuel filter

Under vehicle, driver side, below seating area, front of fuel tank, mounted on chassis in fuel lin.

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Anonymous

  • 72 Answers
  • Posted on Dec 04, 2009

SOURCE: 1988 sedan deville cadillac runs good until

Sounds like the battery is weak or the alternator isn't providing enough amps to keep the engine running and power the lights at the same time.

Testimonial: "thanks , it sounds logical. Should I replace the battery? The guy who owned it before me just replaced the alternator."

Anonymous

  • 1985 Answers
  • Posted on Dec 28, 2009

SOURCE: have a 99 cadillac sedan deville. lots of

you need to verify the dome lights are turning off before you walk away,something is draining the battery.check you car out after driving it and make sure radio and any other things all shut off.

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1989 Cadillac Deville Sedan. What would cause my alternator to not charge? I have new alternator and battery, but the alternator charges sometimes?

Question edited for clarity and remove non-existent word 'dint'.
Question moved to model category.

Intermittent faults are the hardest to diagnose. The only way is to find an auto electrician and his pro grade scan tool computer can record what is happening and what causes it? The first thing I would do is check all the grounds.

https://www.google.com/search?q=auto+electrician+near+me

https://www.google.com/search?q=1989+cadillac+deville+sedan.+alternator+not+charging+consistently


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My 89 sedan deville starts and then cuts off like its not getting any fuel is the fuel pump bad plus i ran out of gas about six times before that happen

You could get a buddy to turn the key to the on and off position a few times while you hold the valve stem on the fuel rail on top of the motor to get the air out of the lines. It probably has a air lock int lines
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Have a 91 cadillac sedan deville left the inside

Security system is active, look in your owners manual to deactivate
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What kind of Battery does it Need?

You can buy a battery at an autoparts store or even some department stores which feature autorepair (walmart,sears) or even some shopping clubs (BJ's). Batteries become more expensive as you go from 48 months to 60-72 months and so on.

Look for a battery which has at least 800 cold cranking amps. Wherever you buy the battery will have a catalog to ensure the new battery fits your car. Take a quick look under the hood to see where the battery posts are positioned. i.e. POS right front, POS left front, POS left back This will make things easier when installing the new battery. I hope this answers your question. Best of luck.
Greg
1helpful
1answer

Was running fine but doesnt want to start now

Fords have the reset switch option only. Relays are mounted on the firewall
0helpful
1answer

1989 Sedan DeVIlle blower motor keeps running and kills battery

sounds like you have a faulty blower module. When looking at the blower motor under the hood, the module would be located about 12 inches to the right mounted on the a/c evaporator housing. It has 2 electrical connectors on it
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1989 Cadillac Sedan DeVille

Disconnect battery negative cable from battery and touch it to the positive sidefor a second and hook it back up , this may reset the bcm.
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