Question about 1990 Cadillac SeVille

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Wont start in cold weather battery good anti theft not engaged

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The problem you describe could be result of a few different things: 1) Check your Idle Air Control (IAC) sensor/motor. This sensor is located on your vehicles, throttle body. The purpose of this sensor is to control the car's idle under various operating conditions including ambirnt temperature. In order for it to function correctly, the internal components must be clean (meaning, little or no carbon build up) and it must be undamaged. Sometimes the IAC can be cleaned; however, if this cleaning procedure is not properly done, the IAC can become damaged. This sensor is also sometimes called the "Cold Start" sensor. A new IAC will cost $50-$100. 2) Check you Coolant Temperature sensor. This sensor is located on the top of your engine and is screwed into your intake manifold. When this fails your car will experience starting problems when cold outside. A new Coolant Temp sensor will cost about $100. Take a look at these two solutions first. My guess is your IAC needs to be cleaned or replaced. Good Luck!

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Posted on Jan 17, 2011

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You need to replace the ign. lock cylinder and chip key, the tiny wires have broken.

Posted on Jan 16, 2011

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2 Answers

My 2005 R51 Nissan Pathfinder Ti wont start


the clicking indicates that the battery is dead or flat. The only test is with a load tester. For a battery to fail quickly especially in cold weather indicates that it was on the way out.

Feb 01, 2015 | Nissan Cars & Trucks

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2010 Tacoma wont start. It doesn't even click. Radio works windows dont work. door locks dont work. IS this an Anti Theft problem because the battery seems to be ok.


I suspect that the problem will be at the battery. either dirty or loose terminals ( should be shiny clean at posts and terminals) or a faulty battery. have a load test done to determine battery condition as batteries that work ok in warm weather fail in cold weather.

Dec 25, 2014 | 2010 Toyota Tacoma

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2001 vw beetle, after replacing my battery my car would only start inthe afternoon when weather is warm outside, Immobilizer problems, car wouldnt start if it was cold outside. If I heat my key with a blow...


That is a funny one, never heard that before, but there is a chip in the key. Try a full reset again.

Tip & How-To about Cars & Trucks
Resetting a Vehicle Anti-Theft System This is how you reset an anti theft system if you have the anti-theft light on, or your car is cranking, but you have no spark.

Doing a full reset of the anti-theft system.

Disconnect both battery leads for at least two hours.
Hold the negative and positive leads together for 5 minutes to fully discharge any power.
Put the key in the ignition, but not turned on. VERY IMPORTANT!
Connect the positive lead.
Connect the negative lead in one swift movement.
Wait 15 minutes for the system to fully reset.
Posted by Andrew... on Jan 14, 2018
Resetting Vehicle Anti Theft System

Mar 02, 2018 | 2001 Volkswagen Beetle

2 Answers

1994 pathfinder wont start, wont engage, wont turn over. think i activated the anti theft device


try disconnecting battery and when disconnected switch ignition on the reconnect with ignition on may reset system sounds like a cental lock problem try tailgate

Apr 21, 2013 | Chevrolet Monte Carlo Cars & Trucks

1 Answer

Wont start battery is good


If the engine will not crank, a mechanic would check for voltage at the starter, the neutral safety switch, and the key switch.
Is the security light on, or the anti-theft engaged ?

Jul 30, 2012 | 2003 Toyota Camry

2 Answers

My theft light is flashing but my 1997 expedition wont start.The vehicle turns over but just don't start.


ANTI-THEFT SYSTEM Passive anti-theft system
Your ignition key has a unique imbedded transponder which engages engine electronics and allows the vehicle to be started. Without the use of your special ignition key, the vehicle will not start.

During each vehicle start, the coded key is read by the anti-theft system. If the key’s ID code matches the code in the anti-theft system, the vehicle is enabled to start.

Anti-theft system
Briefly illuminates when the ignition is turned to the ON position to verify that the passive anti-theft system is operating properly.

Also, its possisble that tou have actovated the fuel pump switch.

CHeck it.

Jul 20, 2010 | 1998 Ford Expedition

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