Question about 1991 Buick LeSabre

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My 1991 buick lesabre this morning showed the coolant temperature light on the dashboard when i opened my hood steam was visibly coming off the engine block...i waited 30 minutes then opened the radiator cap in which had steam coming out of it, in addition i added engine coolant about 2 months ago at a dealership when it was in for maintence the car has approximately 150,000 miles. thanks for the help

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It's either the radiator is blocked and needs to be flushed or changed,or the thermostat (the temperature regulator) is blocked and needs to be changed.

Posted on Aug 26, 2010


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1994 Buick Lesabre calls for a 160 or 180 degree thermostat

that is the opening temperature for the thermostat
it opens at 160 degrees which is good for hot weather operation or another with 180 degrees which is good for cold weather operations
The differences is 160 opens sooner to start coolant circulation to keep operating temperature low where the 180 keeps shut and allows the operating temperature to rise up as soon as it open the cold air will quickly cool the coolant.

Feb 28, 2015 | 1994 Buick LeSabre

1 Answer

No heat just a/c

Low coolant level in engine will result in no coolant reaching interior heat exchanger. Otherwise, check environmental controls. Feel heater hoses under hood to see if they get warm when engine is warm. Could be control valve is not being opened to allow hot coolant into interior heat exchanger.

Feb 22, 2014 | 2000 Buick LeSabre

1 Answer

Car is leaking antifreeze and started sqeaking really loud when i started it up this morning and didnt stop. it got -8 last night just trying to catch it before bigger problems happen.

Where is it leaking antifreeze? Was it from a hose? Start car. Run to temperature. Check to see if there is smoke (steam) coming from under the hood. This would be coolant spraying out due to pressure. Shut down car and cool off. Replace hose, fill with coolant, and bleed system.

The coolant might be hitting a pulley or the pulley is now worn out. Remove the serpentine belt and start car. See if the squeek is still there.

Dec 09, 2013 | Buick Cars & Trucks

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How do I replace the thermostat in my 1992 buick lesabre

Open the Century's hood. Follow the upper radiator hose from the engine to the coolant outlet housing, on the upper portion of the engine's side.Remove the bolts holding the coolant outlet housing to the engine, using a socket wrench and an 8 mm socket.Pull the coolant outlet housing off the engine, by hand. Shove a rag into the outlet housing to prevent debris from entering the engine.Clean the sealing surface on the engine and housing, using a gasket scraper.Remove the rags from the engine and coolant outlet housing. Start the engine and let it run until the temperature gauge reaches operating temperature.
Buick Parts

Feb 01, 2012 | 1992 Buick LeSabre

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check top radiator hose goes to thermostat housing sound like its leaking if your engine leaking from left driver side on top of engine it has to be top radiator thermostat hose leaking.wait until engine cool down replace top radiator hose see if coolant leaking still occur if so you could have radiator leak.

Dec 09, 2011 | 2002 Buick LeSabre

1 Answer

My 1988 Buick LeSabre blows coolant steam into the passenger compartment when I turn on the heat and the fan. Also there is dripping coolant coming from the under the dashboard onto the floormats. Could...

Yes! the heater core is bad/leaking. it sits inside the heater box under the dash. it is a fairly big job to replace and should be done by someone who is knowlegeable and expierenced in the replacement of them. the ac system ahs to be drained/evacuated if still charged and the heater box opened for removal of the heater core. Sorry for the bad news but you are correct in your diagnosis.
I hope you find or have someone who wil take care of you on the price. This can be rather expensive to have repaired. Ballpark of 350-500 depending on labor per hour costs at a professional shop.
Good luck , Scott

Aug 23, 2011 | 1988 Buick LeSabre

1 Answer

2000 le sabre runs hot but when I put air on it cools down


Jun 14, 2011 | 2000 Buick LeSabre

1 Answer

How do I replace the thermostat on my 2000 Buick Lesabre Limited 3.8 liter V6?

find where the upper radiator hose goes into the engine. the thermostat lives under that cover. drain some coolant from your COLD engine(to avoid burns) remove the bolts and replace the thermostat. be sure to also purchase a new gasket. some 3.8 s use both a rubber and paper gasket. parts store should have listings. reinstall, refill coolant, and run engine, topping off coolant as engine warms. some have small bleeder screw on the thermostat housing to air in bleeding air while filling. just crack it open until steady steam of coolant comes out. test drive and recheck coolant level. recheck coolant and adjust level for the first few days.

Dec 21, 2010 | 2000 Buick LeSabre

1 Answer

How to change warning light bulbs, 97 Buick Lesabre Ltd

bulbs do burn out, but the dash will have places that are not always used for all models. i.e. if your car doesn't have ABS that light will not be used. To replace the bulbs you will need to remove the instrument cluster from the dash. its not to hard to do yourself, two phillips screwdrivers and some patience

Jan 12, 2009 | 1997 Buick LeSabre

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