Question about 2002 Pontiac Sunfire

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Started car none of the gages worked so i kept cranking it up and shutting the engine off then the theft system cut on and it will not let me start the car up how do i get the theft system to cut off where i can start my car! for a 2002 pontiac sunfire

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I would take off the positive battery cable and let it sit 60 seconds then hook it up should reset computer hope this helps

Posted on Sep 11, 2010

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1 Answer

Where is the safety shut off for a 2003 Pont Aztek


There is no safety shut off switch .First off you say it still won't crank , I'm assuming you mean it won't start an run . If you turn the key to the start position an the engine spins ,that is referred to as the engine cranks . You have a no crank - no start or engine cranks - no start . A fuel pump would have nothing to do with a no - crank -no start problem . If the engine is cranking an not starting check for spark at spark plugs . Is there a security light lit on the instrument cluster ? a anti-theft system problem will cause a crank - no start problem . A short on the five volt reference circuit will cause a crank - no start . A shorted map sensor , shorted TP - throttle position sensor

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2005 c230 Kompressor = Crank no Start


You have to go back to the basics to find out what systems aren't working. Fuel/Fire/Air. Is it getting fuel, is it getting spark, how is the compression? Once you figure these things out then you will be heading on the right track.

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I have a 96 Pontiac grand am we 2.4L twin cam the anti theft system kicked on but I followed the steps and reset it then it started coming back on reset ran fine then just one day bam died not like running...


the lamps you need to watch the lamps. they don't lie.
so now it dont start (but cranks)
the operators guide tells you what the lights mean, lost that.?
2 lamps are security or IMMOBILIZers have a lamp
  • off means OK
  • on means its bad ( locked out, )
  • flashing means that system is sick.
generally. got both lamps? look carefully.

IMMO kills engine, if car is tired to start. with wrong key. (and or fob)
security is theft alarm. and some cut spark others cut fuel other cut
some even cut cranking,
does yours crank?
or cranks ok but wont start.
no matter the lamps are FIRST> never last. never replace parts until you know what the lamps mean.

see this?

http://newrockies.com/5232/need-know-gm-passkey-security-systems/

Passlock: System must detect proper R-code within ignition lock (or ignition switch) in order to start engine. Does NOT have chip in key.

look at the lamp, and do not dis believe it,

Jun 25, 2014 | Cars & Trucks

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95 F150 will crank & start sometimes


Have you anti theft system checked, that is where your problem will be.

Dec 11, 2013 | Cars & Trucks

1 Answer

2000 pontiac grand am ,car cuts off on road .security.light comes on and you wait 5 min .sec.light goes out car will crank and go 2 to 10 miles .then problem starts over again.in code history in obd2 tool...


Here's a trouble shooting guide.Trouble Code: P1632

Theft Deterrent Fuel Disable Signal Received

Possible Causes:


Perform the Powertrain Onboard Diagnostic System CheckPassword Learn Procedure - Attempt to start the vehicle (leave the ignition "on"). The Theft System telltale will flash for 4 seconds and then remain "on" for 10 minutes. Theft System Learn Mode will display Disabled on the Scan ToolTurn the ignition "off" after the Theft System telltale goes "out".Repeat steps 1 and 2 two more times. After the Theft System telltale turns "off" on the 3rd key cycle, and Theft System Learn Mode will display Enabled on the Scan Tool, attempt to start the engine. Once the engine starts the password is learned.

Oct 27, 2012 | Cars & Trucks

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1990 Chevrolet Astro Van sputtering and cutting out and oil light goes back and forth loses power when goes up a hill put Heep, injector cleaner, and fuel system cleaner all in same day. But we kept it on...


How long since a tune-up? Any applicable trouble codes? The basics if it cranks good but won't start, have a helper crank it while you check for spark at the spark plugs. If spark everywhere, use a gage and check proper fuel pressure. Also, check fuel injector pulse.
Crank the starter intermittently so it doesn't overheat. You need spark--fuel--compression, proper amounts at proper time, where applicable, or it won't start.

Aug 07, 2017 | Chevrolet Astro Cars & Trucks

1 Answer

Can you help me, anti-yhief cut power to engine and it won-t start back up


Do you have the year make and model.? If it is a anti theift with a key immobilizer the vehicle will just start and idle for a few seconds then shut off and the anti theft light will remain on or be blinking. Then we know you are dealing with the anti theft. do you have another key to crank the engine if you do use a spare key and hold the key next to the immobilizer and crank the engine see if that will give if it doesnt try this method. roll the window down with window down disconnect the negative battery cable wait 5 minutes reconnect put the key in the ignition but dont crank it just yet turn it in the on spot not the crank for 2 minutes then crank it and see if that start the vehicle . If this doesnt work then you will need to call a mobile locksmith who reprograms the immobilizer

Feb 24, 2012 | Cars & Trucks

1 Answer

Why my van cranks but wont start


Hi Fabio:
Some check engine or anti-theft light there? We will have to pinpoint what the engine is missing...
- Spark
- Fuel
- Compression

All three of these are tested when the engine is being cranked over. There are two way of checking for fuel. Fuel pressure and fuel trigger. Both are very important and must be present for the car to start. Fuel pressure is self explanatory. You just hook up the gage and see what the reading is. Fuel trigger is check with a noid light. The injector gets unplugged and the noid light gets plugged in to the injector clip. With the engine cranking over, this light must blink. This is the signal to the injectors from the computer. You can have all the fuel pressure in the world, but it wont matter if the injector is not pulsing gas into the cylinder like it should! Compression tester, spark tester, fuel pressure gage and noid light are all accessible at your local auto store. All three tests play a very important part in diagnosing a no start condition.

Also, keep in mind that CKP sensor could be failed; scanned the PCM for fault codes stored.

Hope this helps.

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1 Answer

My ford escape 2008-the antitheft system keeps flashing,but the engine is starting.. What can I do?


TAKE TO DEALERSHIP LET THEM CODE SCAN VECHICLE . YOU NEED DIAGNOSTIC EQUIPMENT TO TROUBLE SHOOT THE PATS SECURILOCK SYSTEM. SOUND LIKE PROBLEM COULD BE KEY CODE.KEY COULD BE WORN DAMAGED.FAULT IN ECM OR IMMOBILIZER CONTROL MODULE. BEWARE WHEN THEFT SECURITY MODE TURN ON SOON OR LATER CAR WILL NOT CRANK OR ENGINE CUT OFF WHILE DRIVING.THEFT SECURITY SYSTEM WILL SHUT DOWN FUEL PUMP.

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3 Answers

2000 jeep cherokee starts then stalls in approx 3 sec 4.0 has new crank sensor


I am going to assume that it will not run even if you push on the accelerator pedal?
Can you install or attach an old timing light to the spark plug wires, turn it one and try to start it. The light should flash with the engine running, but if it shuts off at time of engine die, and the engine is still spinning, you are losing spark, My suggestion is the cranks shaft sensor on bell housing.
Second, install a pressure gage on the test port on the fuel rail and watch it as you start the engine, fuel pressure should not drop as the engine dies, if it does, the pump is not working correctly. There are two modes of power to that pump, one to start and timed, for only a few seconds to prime the system, and one to run continuously. Find the wires going to the pump at the tank. Connect test light to those wires and watch what happens during crank and at stall, You should not have the pump shut off and the engine dies.
If you have spark, and fuel pump working, when did you last change the filter,,but I put that LAST.
It has to be one or the other of these.
Good Luck

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