Car will not start?

Do you have a custom or limited model?Does the security light flash or stay on solid when it doesn't start? When you turn the key to the on position without cranking the engine over can you hear the fuel pump run in the tank for 5 seconds?

https://www.2carpros.com/articles/car-cranks-but-wont-start

Please run down this guide and report back.

It is a custom and the security light stays on.

I installed the new starter and it still will not turnover. The Security light is flashing now. Any ideas? Help please...

Replaced battery, starter, tried the spare key, checked the fuses, all the lights turn on, the gas pump works, the ac works, windows work, tried starting in Neutral, then park again, 12 volts going to the starter, and the car will not start. It will not even turn over. What can I do next?

Look's like your anti theft is the problem i emailed you a trouble tree i hope that's the system you have let me know if it's not.I emailed it to your personal email.

The security light was flashing when I tried to start the car. Since the security light was flashing it was the anti theft system not working. So I had to pull the steering wheel. To prevent the air bag going off I disconnected the battery and waited 10 mins. This will prevent the bag from deploying. Once I pulled the wheel I could pull the ignition switch and see that the wire was cut for the anti theft system. Disconnected the wire and got a new switch at the dealer. Had to get the switched coded for my current keys.Then I reinstalled the new switch and it started. Then reinstalled the string wheel and there you have it.

thanks

On my 1999 LeSabre, very often when I get in the car and try to start it, a security light will be on and when trying to start it, nothing happens. I have to play around with the remote usually for 5-10 minutes before the light goes out and car starts.
Is this caused by a keyless entry remote, a worn out chip on the key, or something else?
Please help with any info you might have.
Thank you

It has a fault with the theft system. You need to have it scanned for trouble codes at the dealer. Post the codes for me so we can have a good starting point for diagnosing the problem.

1999 Buick LeSabre will not start. It has a new starter, fuel pump, fuel pump relay and battery, the power seats, and power windows will not work as well. The car will start and run for about 30 sec. before shutting off by itself.

does keeping foot on gas keep it running?

no keeping a foot on the gas does not keep it running. Why would that have anything to do with the seats and windows not working?

so all these problems developed at the same time/simultaneously?

Car wouldn't start. Replaced 3 cylinder coils. Pulled spark plugs and they were "wet" with oil. Changed those and also needed to replace the cooling termostat. Car started (with a jump). Runs smooth but puts out heavy white smoke from exhaust. HELP!! (The termostat had been taped for some time, i think that may have lead to the major problem. The car would periodically "cut out" when the air was going and it was on an incline but it never ran hot.

White smoke means the engine in burning coolant. Usually the first suspicion would be a blown head gasket from overheating but this particular engine has a known problem with the plastic intake manifold deteriorating and leaking coolant into the valley and eventually into the intake port.
Here is a TSB on it.

Thank you so much for your consideration in answering my question. If this is done either intake manifold or the head gasket, do you know about what cost i am looking at? I really do like my car!

The intake manifold job could run in the $500 range but a head gasket problem could run anywhere between $800 and $1500, depending how much damage was done.

1999 Buick Lesabre running fine yesterday. Parked outside last night in negative temperatures. Cranks strong but will not turn over. Suggestions?

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 away from ground-have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, Do you hear the fuel pump come On when you turn key on? If not check fuel pump fuse and fuel pump relay if so, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs,coil's resistances,cap and rotor,distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it and keep testing

Pump is fine, fuel pressure is fine. Had to replace a coil because some moisture got in there. Now all the coils are fine, snappy, and blue. sensors and computer will have to wait until tomorrow. all other theories are welcome in the meantime.

Getting spark and fuel -check the valve timing could be off

4 days ago my car stalled out as I was driving thru approx 4-6 inches of flood waters.
Yesterday I went to pick it up from the shop the cops had it towed to and it
wouldn't start. The battery is good and it starts to try to turn over but it can't quite get
there. Any idea what could be wrong or what I should do first when I
try to fix it?

Since you were in water, my guess is something in the ignition system has gotten wet. Check to see if you are getting spark to the plugs. If not, then you need to determine what is causing the issue. It could be a crank sensor, module...

Good day, my car used to run fine until one day I was swapping my car battery and accidentally bridged the positive and negative terminals on my top post battery with the metal ratchet. I was using to tighten the bolts now the car will not crank or roll over. All the lights and horn and everything still work fine radio turns on and everything just will not crank. Already changed the starter hoping it would be the culprit but no change checked all the fuses and they seemed okay. any help on this matter would be much appreciated. thanks in advance.

try a different key or resetting security system. Also, check all fuses under hood with a volt meter or test light. See link.
https://www.2carpros.com/articles/how-to-reset-a-security-system

my 1999 buick lesabre is heat sensitive. On hot days when parked on the blacktop it wont start. Acts like no spark as the engine turns over quickly and does not give any indication it is trying to start. If you pour water over the engine it fires right up and usually is fine. On really hot days it will run a bit rough on the freeway. I have changed the fuel pump and the electronic ignition module, the coils read within reccomended tolerances when tested with an ohm meter. Strangely the car even when it has sat for hours on the hot pavement feels very hot and steams like crazy when you pour water on the engine...it then starts up. Also never have any problem when the weather is cool...I live in redding california so 110 degree days are not horribly uncommon and have not doubt that blacktop temps exceed 150 degrees

Well you have a testing method going. We have done similiar in similiar situation. Instead of pouring water, take a rag or washcloth and soak it in a bucket of ice cold water. When the no start happens, place it specifically on particular components.

I would not assume the ignition module is good because it is new. Might be bad out of the box.

Using the cooling method of testing should lead you to the component.

Unless you have a scanner that can read the data stream, or a spark tester, this is an inexpensive way to flush out the source.

Check the connector at the module for being clean.

You can try disconnecting the coolant temp sensor and see if that makes a difference.

I have been unable to determine the cause of the problem by using water to cool a part or by using a heat gun to apply heat.

A friend has a professional type scan tool (more sophisticated than the run of the mill OBD II. It reads recent fault codes reflecting high signat at MAP sensor as well as p1361 and p1362 which seem to indicate either a bad wire harness connection in the ignition system (though we could not find one) or an Ignition module or ecm failure.

Could the symptom be a bad MAP Sensor, where should I start?

I would go back to the ignition module. Even though you replaced it, I have seen multipul failures with some brands. Either find a known good module from a junk yard or get a delphi or a/c delco module.

I have a 1999 Buick Lesabre with approx 110k miles.
There is an ignition problem:

Sometimes it works fine.

Other times the Security light in the dash comes on and the car will not start.
Usually after waiting for a period of 4 or 5 minutes, the light goes out and the car starts normally.
Any ideas on what's going on with this?

Thanks
Bill

sounds like a key issue or the security system has a failure. have it checked at a shop to verify

Roy

The car has been the shop. The ignition switch has been replaced. Several different ignition keys have been used with the same result. The person at the shop wants to try to convince me that the starter has a "dead spot". It always works fine when he is trying it.

It could have a bad starter. When its not starting check and see if there is voltage on the crank wire. @ the starter

After having to replace the upper intake on the car it will crank but not start. What could the problem be?

did it leak coolant into the motor?? it may be water logged and unfortunely, water will not burn

Roy

car was running when it was parked, upper intake was replaced, all cylinders blew out several times, 150 lbs psi on all cylinders, have fuel and fire, but unit doesnt want to start. wants to but will not start. looked at GM website and it mentioned lower intake gasket deterioration after 60,000 miles. car was running before repairs were done, could lower intake gsket be the problem?

no. if you have fuel and fire as you say, then it should go.

did you replace the plugs??

Roy

no, but i took them out and put them in another buick just like mine and it cranked fine.

Car just wouldn't start one day. Only problem prior was she would hesitate when going up an incline when air was on. The cooling termostat had been taped on (used car I just bought). Replaced 3 cylinder coils still wouldn't start, pulled plugs and they were "wet" with oil. Changed those and also replaced the cooling termostat. She'll start but puts out heavy white smoke. Car runs smooth tho... HELP. Am I looking at a major fix??? Seems like it!!!

I'd check compression. The smoke may be coolant getting into the cylinder/s? Bad gasket, cracked head?