How Do You Remove Thermostat Housing Bolts on a 2000 Buick Century?

Asked by Oct 26, 2014 at 10:56 PM about the 2000 Buick Century Custom

Question type: Maintenance & Repair

I‘m having problems replacing the thermostat on my 2000 Buick Century.  
    I can’t remove the upper bolt on the Thermostat Housing; I don’t know if it’s frozen
in place or, I just can’t reach it well enough to get a good grip on it (or both).  There are
two horizontal pipes in the way, one’s black and the other’s silver.  I tried ‘liquid
wrench’ on the bolt and gave it several good taps, but it won’t budge.  
    To access the bolt better, I tried to remove the Throttle Body.  I removed the nut on
the lower right side of the TB (in front of the small black plate that’s attached to the
black pipe).  However, I can’t seem to remove the stud bolt that comes from the
Throttle Body and extends through the slot in the small black plate.  
    I’m wondering if I should try to remove the black and silver horizontal pipes that are
blocking access to the upper bolt on the Thermostat Housing.  By the way, the lower
bolt on the TH also seems be frozen or, I can’t get enough leverage (or both).  I would
appreciate any advice that anyone can give me.  THANKS!

1 Answer

795

I have used a 13mm "S" wrench for this bolt. A VW carb wrench will work as well.

Your Answer

Add photo

Related Questions

Search Buick Century Questions

Buick Century Experts

#1 John Saffrahn
John Saffrahn
Reputation 940
#2 Tom Demyan
Tom Demyan
Reputation 780
#3 John Pate
John Pate
Reputation 520
View All

Related Models For Sale

Used Buick LeSabre
19 Great Deals out of 1,927 listings starting at $1,588
Used Buick Regal
173 Great Deals out of 10,527 listings starting at $4,000
Used Chevrolet Impala
546 Great Deals out of 35,508 listings starting at $899
Used Chevrolet Malibu
1,100 Great Deals out of 79,829 listings starting at $2,500
Used Buick Park Avenue
401 listings starting at $1,500
Used Honda Accord
1,053 Great Deals out of 66,933 listings starting at $1,000
Used Ford Taurus
282 Great Deals out of 18,748 listings starting at $1,499
Used Toyota Camry
1,225 Great Deals out of 82,703 listings starting at $750
Used Toyota Corolla
1,004 Great Deals out of 68,557 listings starting at $1,800
Used Nissan Altima
1,281 Great Deals out of 74,433 listings starting at $1,000
Used Honda Civic
831 Great Deals out of 83,702 listings starting at $750
Used Ford Escape
1,276 Great Deals out of 84,553 listings starting at $995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.