Last post on Sep 24, 2013 at 11:21 AM
You are in the Buick LeSabre
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Buick LeSabre, Engine, Sedan
#10 of 305 Re: 1995 Buick LeSabre Stalling [sizzman]
Aug 31, 2006 (11:56 am)
I'm wondering if the problem isn't fuel related. I had a GM that was hard to start when hot (you had to floor the gas pedal) and it turned out to be the fuel pressure regulstor, which, I'm told, is a common GM problem. A weak fuel pump could "starve"the engine above a certain RPM. There's tests for both of them. How about posting what the answer is when you find out?
#11 of 305 trouble starting a 1995 lesabre
Sep 02, 2006 (2:28 pm)
i just bought a 95 lesabre and it runs great, but has one maddening problem. it won't start sometimes unl;ess it's been inused for about at least 4 hours. i mean if it's left overnight, it fires right up, after work, it fires right up, but if i go anywhere, and i'm only there for an hour or two. it may not start at all when i come back. it turns over line normal, it just won't fire up. any suggestions?
#12 of 305 Re: trouble starting a 1995 lesabre [davidrc3]
Sep 03, 2006 (3:06 am)
I'm not a mechanic, so take my advice with a grain of salt. When the car won't start, I would pum the gas pedal while it's cranking, to see if the problem is fuel relatd, or ignition(see above). I've heard of problems when the ignition module is hot, also. Good luck!
#13 of 305 Re: trouble starting a 1995 lesabre [davidrc3]
Sep 03, 2006 (7:06 am)
You have to determine if it's fuel or spark.
You can try listening for the fuel pump to prime for two seconds when you turn the key to on without turning it to start. You can do that three times as a way to check if the backflow valve isn't holding pressure after the engine is turned off; three times rebuilds pressure completely in the fuel line.
You can check for spark by using a spare plug and putting the spark plug wire from the car on it and laying the plug on something solidly attached, grounded, to the motor. Have someone turn key and see if you get spark.
Pumping the accelerator pedal doesn't do anything in this day of fuel injection. If you think the car is flooded, hold pedal to the floor while cranking, otherwise keep foot off of gas pedal. The days of carburators have different algorithms for troubleshooting.
You would be able to smell gas at the exhaust pipe if you were flooded.
You may have an electronic spark control part failing when warm. You may have a crankshaft position sensor or cam position sensor failing. How many miles are on the car?
The last two guesses are from what I've reach in a Bonneville discussion of higher mileage failures that are odd in behavior, making them difficult to troubleshoot with codes.
#14 of 305 93' lesabre wont start after going through big puddle
Sep 14, 2006 (6:02 pm)
I have been looking for a place to get some help for a 'do it yourselfer' who doesnt want to pour a lot of cash into a 13 year old car. We had a really rainy day last week and one road that I go through to get home from work had a substantial amount of water over it, after going through it (i was probably going 20 or so) I went about 200 feet and the sucker stalled out. After that it would not start, i sat there for 10 minutes or so and then it would start and run fora bout 3 seconds and then stall out. It did that several times. Since the last time it did that it has not started since and will only crank.
A buddy of mine and I looked at it today, we found that the plugs are not sparking. Took one out and cranked it and nothing. The wires and all are fine. Suspected the coil packs, took them off and took them to auto zone and they tested out fine. The guy at autozone said we might want to check the camshaft sensor which is one the side of the engine down by one of the pulley wheels, said if that gets water in it it will not work and will not spark.
To "test" that would be 36 bucks for a new one and have never replaced that before so am not even sure I can do it myself so I would like to have some semblance of it being a good idea before I do that. Obviously it wont start so if i need to take it someplace I will have to have it towed. (I was 3 miles away from home so a friend pulled it back to my house with his truck)
Anyone have any suggestions? Thanks!
#15 of 305 engine will not turn over
Dec 26, 2006 (8:15 am)
I have a 99 lesabre with less than 80,000 miles that just stop running. It was fine when I cranked it in the morning and 2 hours later would not turn over. Could it be a starter problem or water in the crankcase? It does not sound like a starter problem to me. It seems to be based more in the engine. It also misfired before it quit cranking altogether. Help!
#16 of 305 stalling at start
Jan 09, 2007 (6:37 pm)
When starting my buick after 5 minutes I touched the hose to the radiator from the thermostat and it don't have any pressure. Then I pushed the gas pedal and it stalled.
#17 of 305 Re: engine will not turn over [msutton]
Jan 09, 2007 (7:13 pm)
How's the battery state of charge? Has battery been replaced since the car was new? You're way past due if not.
Do the lights dim when you turn the key? Does the battery voltage drop below the orange line on the voltmeter while cranking or belw 10 volts on a digital readout?
Have you removed and cleaned both battery cables to get off corrosion? Have you cleaned both of the positive cables that piggyback onthe post. Check between them for corrosion and get bare clean metal contact. Check the short lead that grounds on the fender next to the battery. Check the lead at starter for corrosion.
I'd go with the easiest first. The cables and corrosion have given lots of people trouble. Your mileage is too low for crank position sensor problems and cam sensor.
Oh wait. When you put the key in, does the security light come on for 10 seconds and then go off or does it flash? Does it go off after 3 minutes. Could be the VATS system not reading the key chip...
#18 of 305 Re: engine will not turn over [imidazol97]
Jan 10, 2007 (7:40 am)
What is the VATS system? The battery and cables are all good. I drove it last night a short distance and as long as you only push the gas slightly the car will keep going, but if you put any kind of pressure on the gas pedal it will stall.
#19 of 305 Re: engine will not turn over [themarcian]
Jan 10, 2007 (8:07 am)
Antitheft system in the key using a resistor chip. The lock cylinder has two contacts that rub the key on the chip contacts and measure the resistance using a small circuit board in the glovebox area. If the resistance is within parameters from the original setting when the circuit was installed at the factory, the circuit sends Okay signals to the drivetrain computer telling it is okay to operate the starter and the fuel injectors.
Otherwise the car waits three minutes for a new key to be tried and hopefully get a good reading indicating a real key for the car is inserted.
If your car is running badly, it needs to be checked. I'm surprised the SES light isn't on. You could have low fuel pressure (fuel filter clogged?), fuel pump going out, you could be in limp mode--but it will not stall above a certain pedal amount, it just doesn't run great so you can get the car home for repair.
Yours sounds like you need someone with a TechII that can read the codes and who knows how to diagnose the problem--not just the circuit and sensor involved and replace parts without understanding what's happening.