Question about 1997 Pontiac Sunfire

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Car starts runs perfect for about 4 seconds. i think it has something to do with the theft protection how can that be by passed

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Relearn the key to the ignition,turn the key on,and leave it on for ten minutes,and turn it off,and right back on,do this a total of three times,and thirty minutes,this should do the trick,,let me know,and if this was at all helpful,please rate.

Posted on Jul 20, 2010

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I have a used 2001 malibu it was running ok but one morning I go to start it and it wouldn't start. I changed the ignition coil packs, ignition module, and the fuel pump and it's still not starting? ...


Your vehicle has whats called pass-lock II, it is an anti-theft setup. There is a procedure that you can do to reset the pass-lock system. Try these steps and see if it helps. Please let me know if it does or does not work and I will help you to further diagnose and repair the problem.

Step 1 - Attempt to start the vehicle. It will crank, but not run. The security light will be flashing on and off. Leave the key in the 'run' position for exactly 10 minutes, then the security light will stay solid or go off.
Step 2 - Turn the key to the 'off' position for 10 seconds. Attempt to start the vehicle. Some vehicles will run at this point, although many will require you repeat repeat Step 1 two more times. Make sure turn the key to the 'off' position for 10 seconds before each 10 minute cycle.
Step 3 - The vehicle is now ready to relearn the proper code. Turn the key 'off' for 10 seconds and then 'crank' the vehicle. It should be running now. The security light might stay on solid for several minutes afterwards, depending on your system.

Mar 24, 2015 | 2001 Chevrolet Malibu

1 Answer

I have a 98 sunfire that will start but shuts off after about 3 seconds. It was running perfectly fine the night before, but about 14 hours later the problem occurred. The car has no power locks, power...


If it's been very cold you may have a frozen fuel line. Put some isopropel type fuel dryer in it and let it sit for a while before tring to restart it.

Jan 12, 2011 | Pontiac Sunfire Cars & Trucks

1 Answer

99 cavalier theft light on continous


does it run 2 to 3 seconds? does the scurity light blinks? if yes leave the switch on after running 2-3 second wait till security light stops blinking then start if light still blinks you have wiring problem. if light just stay on you have spark and fuel check injactor pulse.always remember if you have good spark ,good fuel pressure and injector pulse car should start

Sep 15, 2009 | 1999 Chevrolet Cavalier

1 Answer

2003 hyundai xg350. Starts and runs, then cuts off.


Ita an imobilizer fault.Try changing the key fob battery first.Before having it reprogamed.

Jul 07, 2009 | Hyundai Motor 2003 XG350

3 Answers

1997 Sunfire won't start. Anti-theft light flashing


try disconnecting the battery for30 min befor you reset with the key on.

Jun 09, 2009 | 1997 Pontiac Sunfire

1 Answer

98 lincoln town car wont start, the theft protection is activated


theft protection rsets itself. I have never seen a PCM go bad. Some just need a reflash which costs much, much less. You can get a used PCM if you really think you need one, at car-part.com. Page with asterisk is lowest price.

here's some info on antitheft. What's your red light doing on the dash when you turn on the key or try to start the car?

The passive anti-theft system (PATS) also contains the following components:
  • Theft indicator.
  • Encoded ignition key.
  • Passive anti-theft transceiver module.
  • Hybrid electronic cluster (HEC).
  • Powertrain control module.
  • J1850 communication network.
  • Lighting control module (LCM).
The passive anti-theft system (PATS) uses radio frequency identification technology to deter a driveaway theft. Passive means that it does not require any activity from the user. This system is known as SecuriLock® in North America, Safeguard® in the U.K., and PATS in Continental Europe. This information can be found in customer literature such as the Owner's Manual.
PATS uses a specially encoded ignition key. Each encoded ignition key contains a permanently installed electronic device called a transponder. Each transponder contains a unique electronic identification code out of over 72 million billion combinations.
Each encoded ignition key must be programmed into a vehicle's hybrid electronic cluster (HEC) before it can be used to start the engine. There are special diagnostic service procedures outlined in the workshop manual that must be performed if the encoded ignition keys need to be replaced.
The encoded key is larger than a traditional ignition key. The key does not require batteries and should last the life of the vehicle.
The transceiver module communicates with the encoded ignition key. This module is located behind the steering column shroud, and contains an antenna connected to a small electronic module. During each vehicle start sequence, the transceiver module reads the encoded ignition key identification code and sends the data to the HEC.
The control functions are contained in the HEC. This module performs all of the PATS functions, such as receiving the identification code from the encoded ignition key and controlling engine enable. The HEC initiates the key interrogation sequence when the vehicle ignition switch is turned to RUN or START.
PATS uses the powertrain control module (PCM) to enable or disable the engine. The HEC communicates with PCM over the J1850 network in order to enable engine operation. The HEC and the PCM use sophisticated messages in order to prevent a theft. The HEC communicates with the lighting control module (LCM), which controls the theft indicator.The HEC and the PCM share security data when first installed together that makes them a matched pair. After this security data sharing, these modules will not function in other vehicles. The shared PCM ID is remembered even if the battery is disconnected. The HEC also stores the vehicle's key identification code even if the battery is disconnected. There are special diagnostic workshop procedures outlined in this service manual that may be performed if either the HEC or the PCM needs replacement.
All elements of PATS must be functional before the engine is allowed to start. If any of the components are not working properly, the vehicle will not start.
PATS uses a visual theft indicator. This indicator will prove out for three seconds when the ignition switch is turned to RUN or START under normal operation. If there is a PATS problem, this indictor will either flash rapidly or glow steadily (more than three seconds) when the ignition switch is turned to RUN or START. PATS also "blips" the theft indicator every two seconds at ignition OFF to act as a visual theft deterrent.
PATS differs from the perimeter anti-theft system in that PATS enables and disables the engine from starting. If equipped, the perimeter anti-theft system protects the perimeter of the vehicle (doors, hood, and trunk) and sounds an alarm.


Jun 05, 2009 | 1996 Lincoln Town Car

1 Answer

1996 cavalier


Your car has pass lock I, this is an easy fix. Simply attempt to start the car. The theft light will come on and may flash. Leave the key on after you try to start it for about 10 mintues. IF indeed it is a passlock I issues it will relearn and start up after 10minutes. If at anytime the key is turned back off after the intial start, the process must be restarted. Pass lock allows fuel to make it to the injectors and then pulse enough to get engine RPM to around 800 and then shuts the off injectors not the fuel pump. Let me know how you make out.

Sep 14, 2008 | 1996 Chevrolet Cavalier

3 Answers

Can you bypass theft system


No, I think he has the same problem I do. I have a stock 99 malibu...no real theft system. Usually after it rains or gets cold, a "theft system" light comes on in my dash. I can be driving, and the light will come on. If I turn the car off, I cannot restart the vehicle till about 20 minutes have passed and the light finally goes off. Sometimes this light comes on when I try to start the car in the morning. I put the key in the ignition, and the car will not start for 20 minutes till the darn theft system light goes off. From what I gathered, the theft system issue has something to do with a "passlock II" defect. I have no idea what this is, all I know is that I can't get a mechanic to listen to me, because the issue never repeats itself when I go to a garage. It gets a little annoying, but I've learned to deal with it.

Sep 10, 2008 | 1999 Chevrolet Malibu

2 Answers

Put new ignition in 2003 sunfire. engine wont stay running and theft lock symbol on in dash


HI.

Follow this step to keep running your sunfire.
1 - Be sure the battery is full charged.
2 - Is better if you put a battery charged
3 - Turn the key to run position and tray to start the car and leave with the key in run position,
With a watch let pass 10 minutes no less. you gonna see the security light flashing and stop flashing after 10 munites.
4 - After 10 munites turn the key to off position during 30 seconds, with watch on your hand, OK.
6-- After the 30 seconds try to star the car

I hope this solve your problem.
Please letme know.

Thank you for use fixya.

Jul 11, 2008 | 2003 Pontiac Sunfire

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