Question about 2004 Oldsmobile Alero

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Having trouble starting car..when it sits after an hour the car starts..I have replaced the computer system b c they thought it was the anti theft locking me out from starting it now it wont start at all unless it sits for an hour

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You could have a stsrter that gets locked up when it gets hot. When it cools it will operate OK

Posted on Oct 11, 2010

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Posted on Jan 02, 2017

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My 03 Ford Escape theft light flashes and will not start, what will fix this issue? Tested battery-good, reseated battery connection with key in start position, cycled key from off to on in succession 8...


Taking the vehicle to a qualified repair shop that has the diagnostic tool to read the DTC'S - diagnostic trouble code's . Then they can diagnose the problem . None of the thing's you tried will work , not for anti-theft systems , not suppose to. The computer isn't seeing the correct transponder code or the anti-theft module is the problem . Having the vehicle checked by a qualified service tech is the only way to resolve your problem .
Ford's PATs - Passive Anti-Theft System Information. Permalink
Many Ford trucks, vans and suvs use PATs (passive anti-theft) keys. These keys prevent someone from copying your key to a blank and using the blank. There is a small chip in the key which the vehicle must recognize before it will start.
PATS is Ford Motor Company's passive anti theft system. In 1996 it started showing up on select models of Ford and Lincoln Mercury vehicles. The keys for these vehicles have a tiny radio frequency transponder imbedded in the plastic Head.


When you attempt to start the vehicle, the onboard computer sends out a RF signal that is picked up by the transponder in the key. The transponder then returns a unique RF signal to the vehicle's computer, giving it the ok for the vehicle to start and continue to run. This all happens in less than a second, and is completely transparent to the vehicle operator. It is a very effective system that does its job without the vehicle owner having to think about it, or modify his / her usual routine.

Jan 17, 2018 | Ford Cars & Trucks

1 Answer

How to reset anti theft on 2008 explorer fuel and starter will not kick on


I have a thought. , try disconnecting the battery Both Sides Tap Them together Let The Cables Sit for about a half hour. then reconnect go to drivers door open car close door stick key in the ignition let sit for 10 minutes or until security light goes out !! Then see if that doesn't reset the anti theft system. It might just be that the chip in your key isn't bad. It's worth a shot. Otherwise How about ( More Info ) (do you have remotes ? 2 keys etc) So we can give you the proper steps !! We Are Here To Help !!

Sep 02, 2017 | Cars & Trucks

2 Answers

Car cranks but wont start after sitting 3 months


Sometimes if it set too long the gas went bad. You may have to drain the gas and the put fresh gas in.

Mar 01, 2014 | Ford Taurus Cars & Trucks

1 Answer

06 trailblazer trouble with anti theft system, I think, starts right up then other times the anti theft light comes on and it won't start. can try it 2-4 hours later and it starts right up????


The first thing to do get it checked for DTC'S - diagnostic trouble codes . Not at auto zone or any other parts store , you want to have full scan of all the modules on the car. Don't know how much you know about automotive electronics , computer controlled systems etc.... Your vehicle has at least 10 modules (computers ) on board , there all talk to each other on a serial data network . C.A.N - controller area network . Or in the case of GM it has it's own . GMLAN -
How to Diagnose Controller Area Network CAN When you turn that ignition switch to start it is an input to the computer ,be it the PCM or BCM ..

Jul 01, 2017 | 2004 Chevrolet TrailBlazer

2 Answers

My car won't start, have had no problems it was running fine, pulled into the driveway shut it off, then an hour later it would not start. My anti theft light flashes excessively fast when I put the...


Absolutely! If the Passive Anti-Theft System (PATS) "thinks" you are trying to steal the car, it is SUPPOSED to keep it from starting. The problem is that the PATS thinks you are a car theif when you are not.
Below is a table straight out of the service manual for your vehicle. Please note that the FIRST action that must be taken for any PATS system malfunction is to scan the computer system for fault codes.


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Aug 27, 2011 | 1997 Mercury Sable

2 Answers

'97 Cadllac Deville Concours reading "Anti Theft System Problem"


I had the same problem. trying to save money i took it to several auto places who thought they could fix it..... after a lot of money and my 800.00 after market alarm was taken off i had it took to the dealer . They fix it in two hours they put in new switch and key haven't had any problems sence.

Apr 13, 2009 | 1997 Cadillac DeVille

1 Answer

Trouble starting once in awhile


it does sound like the anti-theft system. There are only 2 ways to bypass your problem. 1) disconnect the anti-theft system which runs into your ignition, cut the wires to the system and join them back together without hooking it back up to the anti-theft. 2) Bring it back to the dealer so that they can replace your anti-theft sensor. The part is rather cheap but the labor is the killer.

Apr 11, 2009 | 1997 Pontiac Grand Am

2 Answers

Anti theft light comes on when driving


no cutoff switch!! try this turn key to on, do not start car. let sit for about 30 minutes, after 30 minutes, turn key off. wait 15 seconds and try to start car. this should reset anti theft system.

Feb 20, 2009 | 2000 Chevrolet Malibu

1 Answer

Anti-theft system seems to have been activated?


Some months ago I began starting the engine of my 2001 Chrysler 300M but turned it of before it really started "was sloppy with the key". The anti-theft system went on for some unknown reason. I disarmed it by disconnecting one of the battery connections under the hood with a wrench. I connected it again, the anti-theft system was off but the battery was dead. Battery was OK after recharging, I have had no trouble since then.

Jan 20, 2009 | 1999 Chrysler 300M

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