have a 99 Buick Century brand new radiator both hoses on tight new radiator cap and new waterpump still leaking coolant and over heating. any suggestions

Asked by Apr 17, 2017 at 12:50 PM about the 1999 Buick Century Custom Sedan FWD

Question type: Maintenance & Repair

Have a 1999 buick century.  3.1 engine.  Overheating losing coolant.  
Band new radiator with new upper
And lower hoses on tight.  New rristor cap and new. Water pump.  We
cant find where its leaking and losing coolant.  Still over Heating.  We
have also. Bled the air out.  Any idea what to do now?  Thanks

2 Answers

80,415

Pressure test the cooling system. The system should hold 16 PSI for 15 minutes, minimum. If not, it's leaking somewhere. If no external leaks are found/seen it's probably the head gasket. The GM 3.1 is notorious for blowing head gaskets. HTH. -Jim

1 people found this helpful.

My 94 same problem had to replace engine

Your Answer:

Buick Century Experts

  • #1
    John Saffrahn
    Reputation
    1,050
  • #2
    Tom Demyan
    Reputation
    940
  • #3
    John Pate
    Reputation
    690
View All

Related Models For Sale

Used Buick Regal
84 Great Deals out of 3,609 listings starting at $1,995
Used Buick LeSabre
1,343 listings starting at $1,499
Used Chevrolet Impala
506 Great Deals out of 26,054 listings starting at $995
Used Buick Park Avenue
3 Great Deals out of 293 listings starting at $1,350
Used Chevrolet Malibu
619 Great Deals out of 51,548 listings starting at $2,000
Used Honda Accord
703 Great Deals out of 102,793 listings starting at $849
Used Toyota Camry
865 Great Deals out of 71,351 listings starting at $1,000
Used Ford Taurus
214 Great Deals out of 16,222 listings starting at $500
Used Honda Civic
469 Great Deals out of 44,227 listings starting at $1,150
Used Toyota Corolla
739 Great Deals out of 63,429 listings starting at $1,495
Used Chevrolet Silverado 1500
1,801 Great Deals out of 158,178 listings starting at $1,200

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.