I seem to be having a problem with my 97 buick century it keeps overheating and my temperature gauge is going to the overheating icon like two blocks as soon as i began to drive i have changed my radiator my temp sensor my water pump i dont know what else to do please help me

Page 150 onwards of the owner manual covers the heating.

The digital gauge is giving the temperature of the coolant in the block. The normal, standard analogue gauge have the optimum at halfway and overheating is shown as being above that.

https://www.manualslib.com/manual/230789/Buick-2000-Lesabre.html?page=163#manual

Page 133 and 134 in this manual show the standard temperature gauge. 160 shows Climate Controls in this one.

https://cdn.dealereprocess.org/cdn/servicemanuals/buick/2001-lesabre.pdf

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Blind guess would be the temperature sensor for the electronic fan on the radiator. Other thing that may be causing higher temperature then you want is that coolant system has rad that is partially blocked or that you have a buildup of sludge in the cooling system. Just a blind guess. More help will probably be along shortly.

Hope this helps

It sounds like your car has a bad thermostat that won't open all of the way. However it could have a bad electric cooling fan, fan relay, temperature gauge or fuse!

when the thermostat opened where did the coolant drain to? not understanding. did you put the thermostat in upside down blocking the cool will cause heater to blow cold air. if not, could be radiator itself.

For car running hot and overheating issues, I suggest to you go through this help links. Click this link below and go through the troubleshooting procedure to take care of the problems: ----

temp gauge goes erratic? http://technoanswers.blogspot.com/2012/01/heater-blows-intermittently-and-temp.html

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Temperature gauge keeps fluctuating up and down close to red? http://technoanswers.blogspot.com/2012/01/temperature-gauge-keeps-fluctuating-up.html

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Car runs hot? http://howtobyme.blogspot.com/2011/11/car-runs-hot-in-traffic.html
-----------All types of car overheating problems and troubleshooting?

http://technoanswers.blogspot.com/2011/11/all-types-of-car-overheating-problems.html
Car freeze overnight and started overheating while driving?http://technoanswers.blogspot.com/2012/01/car-freeze-overnight-and-started.html-----------Engine Overheats and heater blowing cold?

http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

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Car overheats and Air blows hot at idle?
http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html
--------overheating? http://schematicsdiagram.blogspot.com/2011/12/buick-century-overheating.html
----------Car engine Overheats and transmission starts slipping?http://schematicsdiagram.blogspot.com/2011/12/car-engine-overheats-and-transmission.html
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Temperature gauge does not move and no heat when heater is ON? http://technoanswers.blogspot.com/2012/01/temperature-gauge-does-not-move-and-no.html

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This details will help.Thanks.

You might try replacing your radiator cap or if you system is pressurized, you may have to replace the degas bag (fill container). Another problem could be a bad thermostat or an improperly installed thermostat. I forgot to mention, does your engine fan operate? If not, that would also cause your car to overheat.

Have someone pressure test the cooling system - you likely have a head gasket leak

Yes Ma'am, Have a pressure check done on the coolant system and I'll be willing to bet you have a blown lower intake gasket.. Pls let me know..

yes it has one. all you have to do is follow the top radiator hose from th front of the car to the engine block. the hose connects to the thermostat housing on the block

I had the same problem with my 96 buick century and it was the intake gasket. The 1990's buicks all have the same problem where the gasket fails after about 100,000 miles. The radiator fluid then starts leaking in with the oil. Check your oil and make sure it is not high. If it is high, then the intake gasket is your problem. They make a special replacement gasket now that does not have the same issue. However, I doubt I'm going to keep mine another 100,000 miles so I just put in the stock gasket. Hope this helps.