Thermostat replacement

Tiny
JORE8888
  • MEMBER
  • 1993 BUICK CENTURY
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 120,000 MILES
How do you remove a thermostat from a 1993 Buick Century 3.3 Do I need to remove the throttle body?
Do you
have the same problem?
Yes
No
Wednesday, March 2nd, 2011 AT 11:09 AM

22 Replies

Tiny
KEN
  • ADMIN
Hello,

Here is a guide that will show you what you are in for when doing the job.

https://www.2carpros.com/articles/replace-thermostat

Here is more information BELOW

Disconnect battery negative cable.
If necessary, remove air cleaner assembly.
With engine cool, drain engine coolant below thermostat level. Never open cooling system with engine hot.
Disconnect radiator hose from thermostat housing.
Remove thermostat housing retaining bolts, then the housing, gasket and thermostat.

Check out the diagrams (Below) both 4 and 6 cylinder engines.

Please let us know if you need anything else to get the problem fixed.

Cheers, Ken
Was this
answer
helpful?
Yes
No
Sunday, December 3rd, 2017 AT 7:11 PM
Tiny
2CARPROS-ARCHIVES
  • MEMBER
  • 1993 BUICK CENTURY
  • 80,000 MILES
I have a leak from the black metal heater line that comes from the carb assembly after replacing the thermostat. Does that metal line need a sealant or some form of adheasive when being reconnected after being removed?
Was this
answer
helpful?
Yes
No
+2
Sunday, December 3rd, 2017 AT 7:11 PM (Merged)
Tiny
ASEMASTER6371
  • EXPERT
Which motor?

Roy
Was this
answer
helpful?
Yes
No
Sunday, December 3rd, 2017 AT 7:11 PM (Merged)
Tiny
URP13
  • MEMBER
  • 1995 BUICK CENTURY
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 140,000 MILES
Tools, parts, and instructions needed.
Was this
answer
helpful?
Yes
No
+1
Sunday, December 3rd, 2017 AT 7:11 PM (Merged)
Tiny
WRENCHTECH
  • EXPERT
There is nothing special with tools or parts. The stat seals with an O-ring. The hardest thing is just reaching the bolts as they can be difficult. An extension with a 13mm swivel under the exhaust pipe usually works.
Was this
answer
helpful?
Yes
No
-1
Sunday, December 3rd, 2017 AT 7:11 PM (Merged)
Tiny
TJDPSR
  • MEMBER
  • 1994 BUICK CENTURY
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 166,693 MILES
Engine Cooling problem
1994 Buick Century 6 cyl Front Wheel Drive Automatic 166693 miles

I have locate where the thermostat goes, but I have noticed it is not in a very friendly place to get to, is there a trick or special way to get to this thermostat without knocking the hide off of your knuckles? Also, is there supposed to be a gasket with the new thermostat or is it the rubber gasket attached to it the only one?

Thanks in advance.

Tracy
Was this
answer
helpful?
Yes
No
-1
Sunday, December 3rd, 2017 AT 7:11 PM (Merged)
Tiny
JALOPYPAPA
  • MEMBER
Hard indeed to get to without removing the throttle body (it needed a good cleaning, anyway, right?). The throttle body will need a new gasket and sealant for the coolant connection. The thermostat needs only the rubber edge seal, I think. Be sure to place it right side up.
Was this
answer
helpful?
Yes
No
+3
Sunday, December 3rd, 2017 AT 7:11 PM (Merged)
Tiny
KAZULE
  • MEMBER
  • 1992 BUICK CENTURY
  • 15,000 MILES
How can I tell if my thermostat needs to be replaced? My car overheated last weekend, several times, thankfully each time I pulled over, let it cool, and put antifreeze directly into the radiator, which I believe saved my engine. Found out from my bf's cousin that my radiator had a crack in it, so we patched it up with jb weld, waited and test drove it, and all seems fine. Even the heat is hot, which it wasn't before. Also flushed the radiator and reservoir, and put a new cap on the radiator and reservoir. Should I still get my thermostat checked? Car drove about 45 miles and no overheating problems or anything, just still feels a tiny bit rough when I first get going. Put oil in it also, 2 quarts. And I can still just BARELY smell antifreeze every once in awhile when I am driving or done driving. Any ideas?
Was this
answer
helpful?
Yes
No
Sunday, December 3rd, 2017 AT 7:11 PM (Merged)
Tiny
RASMATAZ
  • MEMBER
Could be airlock in the cooling system -try bleeding it and see what happens

How Can I Tell If Thermostat Needs To Be Replaced? Go to this link:http://www.2carpros.com/articles/how-to-test-an-engine-cooling-system-thermostat
Was this
answer
helpful?
Yes
No
Sunday, December 3rd, 2017 AT 7:12 PM (Merged)
Tiny
BRAVESTAR1
  • MEMBER
Only if your not getting any heat, would your thermostat need to be replaced, as it's in the always open position. My question would be, is the fan spinning, when the car has been driven for awhile and sitting at a stop light or parked in your driveway? If the fan isn't cycling on, the engine will overheat, and could possibly cause the crack to the radiator. Check the fan relay switch as well as the radiator thermal plug. Often on GM vehicles, a small 3 inch brass plug with 1-2 wires has broken off the lead, lost the thermistor inside, or isn't grounded properly anymore.
Was this
answer
helpful?
Yes
No
Sunday, December 3rd, 2017 AT 7:12 PM (Merged)
Tiny
GTINDALL
  • MEMBER
  • 1992 BUICK CENTURY
Engine Cooling problem
1992 Buick Century 6 cyl Front Wheel Drive

3.3 v6 thermostat removal
Was this
answer
helpful?
Yes
No
Sunday, December 3rd, 2017 AT 7:12 PM (Merged)
Tiny
RASMATAZ
  • MEMBER
Fig. 16 Thermostat & Housing Assembly


http://www.2carpros.com/forum/automotive_pictures/12900_t_11.jpg



Refer to Fig. 16 when performing the following procedure.

1.Disconnect battery negative cable.
2.If necessary, remove air cleaner assembly.
3.With engine cool, drain engine coolant below thermostat level. Never open cooling system with engine hot.
4.Disconnect radiator hose from thermostat housing.
5.Remove thermostat housing retaining bolts, then the housing, gasket and thermostat.
6.Reverse procedure to install noting the following:
a.Ensure thermostat gasket area is thoroughly clean.
b.Install thermostat with new gasket.
c.Apply a suitable sealer to thermostat housing retaining bolts. Install and torque bolts to 20 ft. lbs.
d.Refill and bleed cooling system as necessary.

http://www.2carpros.com/kpages/auto_repair_manuals_alldata.htm
Was this
answer
helpful?
Yes
No
-1
Sunday, December 3rd, 2017 AT 7:12 PM (Merged)
Tiny
BANDER4541
  • MEMBER
  • 1995 BUICK CENTURY
Need to know how to take thermostat out having hard time at getting wrench on bolts because of its precarious position
Was this
answer
helpful?
Yes
No
Monday, November 5th, 2018 AT 5:58 PM (Merged)
Tiny
BLACKOP555
  • EXPERT
The manual isn't showing anything tricky about this one. Try using a long extension to get the ratchet and your hands back where there is more room. Sometimes you need to use universal's (Looks like a u-joint) to be able to get them at an angle

See the image below
Was this
answer
helpful?
Yes
No
Monday, November 5th, 2018 AT 5:58 PM (Merged)
Tiny
SHERRY CARPENTER
  • MEMBER
  • 1999 BUICK CENTURY
  • 20,000 MILES
How to replace thermostat 3100 engine
Was this
answer
helpful?
Yes
No
Monday, November 5th, 2018 AT 5:58 PM (Merged)
Tiny
HMAC300
  • EXPERT
See pics then pretty much reverse removal follow cooing system bleeding procedure after install
Was this
answer
helpful?
Yes
No
Monday, November 5th, 2018 AT 5:58 PM (Merged)
Tiny
SHINEJLW
  • MEMBER
  • 1991 BUICK CENTURY
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
Where is the thermostat located on a 1991 buick century?
Was this
answer
helpful?
Yes
No
Monday, November 5th, 2018 AT 5:58 PM (Merged)
Tiny
DOCFIXIT
  • EXPERT
Follow top hose to block thermo in that housing
Was this
answer
helpful?
Yes
No
Monday, November 5th, 2018 AT 5:58 PM (Merged)
Tiny
63CHEVY
  • MEMBER
  • 1999 BUICK CENTURY
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 157,000 MILES
I've been mechanicing for 3 yrs. There's still a lot I don't know. My mothers car's temp. Gets above normal when it idles. While driving its fine it only gets hot when it idles. The fans are moving and the anti-freeze level is normal. Could it be the thermostat? I've used that bars stop leak, could that have stoped it up?
Was this
answer
helpful?
Yes
No
Monday, November 5th, 2018 AT 5:58 PM (Merged)
Tiny
BMRFIXIT
  • EXPERT
I would start by flushing the system you may caused a restriction in the system
replacing the thermostat will help also flush the radiator
did you have a leak in the system "
check intake
Was this
answer
helpful?
Yes
No
-1
Monday, November 5th, 2018 AT 5:58 PM (Merged)

Please login or register to post a reply.

Recommended Guides