Last post on Sep 24, 2013 at 11:21 AM
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Buick LeSabre, Engine, Sedan
#114 of 305 Re: 2002 Buick LeSabre Custom will not start [rginsc]
Mar 08, 2009 (10:08 am)
Check connections from battery to starter. I always tighten them to move them to make sure the corrosion is broken between contacts. Tighten the little contacts on the solenoid on the starter. Check the ground on the floor pan under the rear seat and tighten it.
Another check is to use something like a light hammer or heavy screwdriver to tap the starter housing when it doesn't start. Sometimes this causes the solenoid contact to make connection through the damage or sticking. It verifies the starter is the problem. I got a rebuilt from a local AC/Delco rebuilder. I felt much better with that than getting a rebuilt from the competitive box stores where cheapest cost is best for them.
The neighbor helping me with my older Buick even used a battery charger/jumper unit and directly connected to the post on the starter to verify that it wouldn't turn.
#115 of 305 1991 lesabre
Mar 09, 2009 (1:55 pm)
I have a 1991 lesabre 6cyl. Car will start but when you drop it into gear it dies and won't start for awhile. Any idea what it could be? It will turn over but not catch.
#116 of 305 1991 lesabre
Mar 09, 2009 (2:21 pm)
My 1991 will start, warm it up try to put it in gear and car dies. Then it will turn over but won't start. Any ideas as to what the problem is?3800 v6 engine
#117 of 305 Re: 1991 lesabre [cfd110]
Mar 09, 2009 (2:34 pm)
One possibility is that the solenoid that handles the transmission lockup is jammed.
#118 of 305 2002 Buick LeSabre Custom stalls but starts again
Mar 22, 2009 (9:13 am)
I have an 02 Buick LeSabre Custom, 3.8l. with 65,000mi.,and not showing a code. The problem I'm having is once it gets up to operating temperature it has a tendency to stall. It will start again but cranks a few seconds and sometimes you have to feather the pedal to get it started. It starts right up when cold. Once in a while if turn the wheel all the way when backing out of the driveway it stalls, but that's when cold.
If someone out there can help I'd appreciate it cause it's only getting worse.
#119 of 305 Re: 2002 Buick LeSabre Custom stalls but starts again [luvmytoyz]
Mar 22, 2009 (5:34 pm)
Check or replace fuel pressure regulator,then go to crankshaft positioning sensor,then the cam shaft sensor.
#120 of 305 Re: 2002 Buick LeSabre Custom stalls but starts again [luvmytoyz]
Mar 22, 2009 (5:44 pm)
I would start with the fuel pump. It would be nice to drive it with a fuel pressure gauge connected and lying against the windshield so you can see the pressure. If it drops when the car gets ready to stall, it's your fuel pump. It's kind of young for a fuel pump; has it been driven lots with low fuel which is rumored to let the pumps run hotter?
When it dies, turn the key off and on for a couple of seconds and listen to the sound of the pump. Repeat a couple of times to build up pressure. See if it start faster. The feathering could be fuel pressure. Also could be MAF sensor -- I believe I recall one person having that symptom. You can disconnect the MAF sensor. It also can be removed for cleaning--don't touch the wires buried inside the plastic. Just spray with MAF cleaner or use an artist's brush to dust them. Lots of MAFs have same part number; so if you have another GM with same part, you can switch the two for a while and see if the symptom moves.
The fellow who lives next to me inherited his father's Monte Carlo. It has 65K on a 95 and fuel pump went out. It was his second car and he always kept a minimum of fuel in it.
#121 of 305 97 Buick LeSabre Custom
Mar 23, 2009 (8:34 am)
My car cranks and then stops. It even cuts off while I'm driving whereas I throw it in neutral and crank it back up and will run, but here's the glitch:
1. We took it to AutoZone and was told it could either be the vacuum line or the oxygen sensor. We fixed that problem.
2. We tuned it up, new oil, new filter and everything, but it's still doing the same thing.
3. We then told one technician at O'Reilly's what was going on and he said it might be the ignition coil. What is that, and what does it cost to fix?
#122 of 305 Re: 97 Buick LeSabre Custom [nikkiro74]
Mar 23, 2009 (10:16 am)
Don't throw parts at the problem based on a counter person's ideas at a parts store. While they have lots of parts experience, they sell them; they don't diagnose. How many miles? What's been done to it?
It can be crankshaft position sensor.
It can be fuel pump. Try checking fuel pressure with a gauge while driving it. Some lose pressure as they heat up when running and cut out due to pressure dropping.
It can be the ignition module that's under the coils. It's doubtful it's just one of the 3 coils; you'd have rough running when one isn't working up to par. You can try disconnecting the power cables to it and reconnecting them. If it stays off long enough, you can pull a spark plug wire and have a spare plug ready to put in it and lay on metal part of motor while someone cranks to see if you get a nice blue spark. Or just lay the plug wire there--it should give a good loud spark.
It can be a vacuum line that has rotted or cracked. Check them all very carefully around the upper intake manifold. You can spray carburetor cleaner around the manifold and the vacuum lines while the motor is running. If there's a leak, when it sucks in the carb cleaner, the idle will change. Voila, you found a leak.
#123 of 305 Re: 2002 Buick LeSabre Custom stalls but starts again [imidazol97]
Mar 24, 2009 (4:55 pm)
Thanks for the idea's. Took the vacuum hose off the FPR, there was fuel all over. Put the one my brother bought for his Monte Carlo and the Buick run fine.
You think for as many years GM's been building these 3.8's they'de have them refined by now. As much as I hate to say it, at least the Japanese usually fix a problem when they find one.