Question about 1991 Buick Century

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Tempature sensor location 1991 Buick century 33

My thermostat is fine when the temp light comes on and off when it comes on the car wants to stall then when it goes out things are fine. I was told it was the temp sensor where is it located on the engine?

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Yes thank you

Posted on Apr 02, 2009

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If you have the 4 cyl, look in upper engine area, end of valve cover, mounted in front side of water outlet.
If it's the 6 cyl, Passenger side upper engine area, below alternator, mounted in intake manifold.

Posted on Feb 07, 2009

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The vehicle is 2004 buick century. sometimes the temp guage rises and comes back down. during this time, clod air blows. sometimes the temp guage is 1/2 way and cold air blows. thermostat has been changed....


is your electric fans running constantly. and most times then not you`ll need a water temp sensor or water temp relay. usually the temp sensor on that model comes usually next to the thermostat with a little wired plug on top. or on the radiator. either way pull the plug while the motor is cold. unscrew the sensor and screw the new one in and replace the electric plug back on top of the sensor. 2 things: Cold motor, have every thing set up and ready because when you take out the sensor the coolant will start to come out. you will not loose much if you work quick. keep rags or paper towels below the sensor to keep coolant off the motor and smelling when it gets hot. you have also pour or hose off coolant after your done installing the new coolant temp sensor.

Feb 10, 2014 | 2004 Buick Century

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HELLO I GOT A ISSUE WITH MY 1996 BUICK LASABRE ITA START FINE IT DRIVES FINE UNTIL IT REACHES THE NORMAL TEMPS OF 195 200 DEGREE AND ITA SPUTTER AND STALL OUT IT WILL NOT START UNTIL THE MOTOR COOLS...


the one thing in your statment is the knockes/knocking this what is known as the big ends and indicates the engine is under pressure and needs a lot of repair.If when you start the engine when cold if you stand at the back of the car and if the smoke coming out of the exhaust has a blue tint/ie like a old ladys hair tint ,as im sure you will see.[bottom line] the engine needs replaced.adrian,,,,

Sep 02, 2011 | Buick LeSabre Cars & Trucks

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I have a 1919 buick century. The heater doesn't put out any heat ? The fan works. The AC works. Is this a thermostat problem ? If it is, where's the thermostat located ?


I would look at your temp control switch on the dash, sounds like it is not switching the blend doors, also do you have a temp gauge in your car for engine temp, if it is reading normal you should not need a thermostat.

Oct 22, 2010 | 1991 Buick Century

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1991 buick century wagon 3.8 v6


The crankshaft sensor is bad,or the ignition module,one of the two.

Jan 28, 2010 | 1991 Buick Century

3 Answers

Coolant temp sensor


BELOW THE THERMOSTAT HOUSING ON DRIVERS SIDE OF ENGINE

Apr 16, 2009 | 1994 Buick Century

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1999 Buck Regal Stalls While Driving


Possible solution to stalling '99 Buick. My '99 Buick Century would die for no apparant reason with no error codes. After 4 days at a Buick dealership and many frustrated mechanics, the problem was corrosion from under the battery location. The wiring harness had small amounts of corrosion internally. Check the wiring under the battery for any corrosion. This has been the problem on more than 1 vehicle that we are aware of. No service bulletin has been issued by Buick.

Nov 23, 2008 | 1999 Buick Century

1 Answer

Radiator Electric Fan Motor on a 2003 Buick Century won't come on when temp gets high


I have a 1997 Buick Century with the same problem. Both my fans work if the A/C is
on as they should. If your turn off the A/C the passanger side fan will not come on
and at an idle the coolant in the radiator will boil, you can hear it in the overflow tank.
If you are driving there is enough air flow thru the radiator that the coolant doesn't
boil and the car doesn't overheat. I have replace the water pump, the thermostat.
and the ETS or engine temperature sensor mounted just above the thermostat in
the thernostat housing, to no avail, I still have the same problem. The only other
thing is the coolant level sensor in the radiator, which I haven't replace yet due
to the fact you have to pull the radiator in order to replace it, which is a major
undertaking. I have a low coolant indicator on all the time on the dash so I have
a pretty good idea the coolanat level sensor is bad. The coolant level is not low
so that sensor is not working as it should. I hope this may help with your problem.
To test you fan raise the hood when it is cold and top off the radiator and fill the
overflow tank to the cold mark. Start the car and let it idle with the A/C off and
see if the drivers side fans comes on. It will have to get to operating temp
before the fan will come on. If it doesn't come on replace the radiator low coolant
sensor on the passanger side of the radiator. If that doesn't fix the problem
replace the thermostat and the Engine Temperature Sensor at the thermostat
housing with an A/C Delco Engine Temperature Sensor. Good Luck..

Sep 26, 2008 | 2001 Buick Century

2 Answers

Temp sensor for 1991 park ave


I have a 1991 buick century that keeps stalling but starts right back up but know it wont start at all

Jun 19, 2008 | 1991 Buick Park Avenue

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