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The Following brands are available based on your search.

  • ACDelco
    ACDelco
  • CSF Radiator
    CSF Radiator
  • Gates
    Gates
  • LKQ
    LKQ
  • Motormite
    Motormite
  • Mr Gasket
    Mr Gasket
  • Stant
    Stant

Best Selling Genuine Buick Radiator Caps

  • We Stock the following top leading brands, including Stant, ACDelco, Gates
  • Constantly Updated Inventory of Buick Replacement Radiator Cap Parts

We stock Radiator Cap parts for most Buick models, including Apollo, Century, Enclave, Encore, LaCrosse, LeSabre, Opel, Rainier, Regal, Rendezvous, Roadmaster, Skylark, Special, Terraza, Verano.

Stant
1971 Buick Sportwagon Radiator Cap 8 Cyl 5.7L Stant - Safety Release Radiator Cap

P311-563AE79    10330  New

5096104AA , DRS29 , DRS-29 , 7B0121321C , RSP30 , 4596198 , 7716 , 703-1701 , 644130 , 7031701 , 33062 , 1501-16 , 31518 , 82830 , 11330 , ST16 , 10330 , RSP-30 , 5103476AA

Qty:
$11.14
Stant Radiator Cap
  • Stant Radiator Cap
  • Pressure Rating 16 psi
  • Safety Release Radiator Cap
  • Product Attributes:
    • Pressure Rating (psi): 16 Psi
  • 16 PSI Lev-R-Vent radiator cap in "A" size. For open or closed system. Will bring back coolant from the overflow tank.
Brand: Stant
Additional Fitment Information:
Vehicle Block Engine CID CC
1971 - Buick Sportwagon V 8 Cyl 5.7L 350 -
Stant
1969 Buick Special Radiator Cap 6 Cyl 4.1L Stant - OE Type Radiator Cap

P311-4F56E0F    10230  New

RS53 , RS-43 , 4592098 , 5310686 , RC-44 , 6410691 , RS61 , RS-17A , RR-19 , 3EG175 , 131 , T16 , WR18 , 7B0121321C , RS-17B , RS-80 , 94222052 , RS44 , 133-9001 , RA-20 , RC-34 , 25661994 , RR17 , ZZM115205 , F4TZ 8100 B , RR-30 , 5096104AA , 94021623 , 1338060 , RS-44 , F1VY8100B , RS-53 , WC-18 , RR30 , RS17B , BC17 , RS17 , RC17 , 19045-PH7-003 , 22583309 , RR20 , FIVH8100BA , RR31 , C44995 , 9441062570 , RR-20 , WR17 , 9-21450-610-0 , ER-17 , RS80 , RS-53A , F4TZ8100B , 25060228 , RS-47A , RC19 , 1339001 , DR29 , 12339878 , RS17A , RC44 , RS-61 , WR-17 , CAC4568 , BR17 , 46008 , RS-90 , 25697430 , RS-64 , 7016 , A17 , RC-26 , SP19 , 04596444AA , 9214506100 , 4596444AA , S17 , 11 53 1 486 703 , 19045PH7003 , 7031698 , 133-8060 , M-17 , RS-17 , RR-18 , RS-40 , 125 , F1VY 8100 B , BC-17 , RR-31 , L95-4012 , DR17 , RC18 , CCC6707 , RC 81 , RS-34 , 6410665 , 620203 , 33031 , ZZM1-15-205 , RC15 , F47H 8100 AB , ER-18 , RS47A , RR18 , 944 106 257 00 , 620204 , 11531486703 , EAC4192 , M17 , WC-17 , RC34 , 3-M-17 , RS-83 , L95-4020 , 52006926 , 11171100848 , 15977333 , 9214506101 , RA20 , 9-21450-610-1 , 31528 , 3M17 , EAC3702 , RC26 , RS35 , RS83 , R31 , 82930 , RC95 , RS40 , RC33 , 52028892AA , 52014479AA , 8-94228-748-1 , RC 95 , RS60 , 8942287481 , 133-8086 , RS90 , 4693175 , 94222051 , 46032 , 5214500021 , WR-18 , RC-17 , 944 106 257 0 , 3-EG-175 , RS34 , ER18 , WA-17 , 130 , 861050 , JLM9652 , 4596198 , 53-10686 , RS53A , RC81 , 703-1698 , 53-10678 , RC-18 , RS43 , 1338086 , 94410625700 , 46009 , RR-17 , 05086226AA , ER-28 , 5352594 , RC20 , RS-60 , DR-17 , 94026437 , RR19 , 15075565 , E9DZ 8100 A , 94022635 , RC82 , DR-29 , RS-51 , 12R7 , 5310678 , RA-17 , 05278697AA , 126 , L954020 , R-31 , ER17 , 5086226AA , WC18 , 6410160 , RC 82 , E9DZ8100A , ER28 , CAC5095 , 10230 , RC-33 , WC17 , 5191233AA , FIVH 8100 BA , RC-19 , 119 , 5-21450-002-1 , R-30 , RS-35 , 94228748 , WA17 , RC-20 , SP-19 , RS64 , 94250629 , F47H8100AB , RC-15 , 17111468060 , 04693175AA , 5278697AA , RS51 , BR-17 , ST-16 , 5103476AA , 94250633 , RC29 , A-17 , RC-29 , 12474637 , 6410962 , RA17 , 8315764 , L954012 , R30

Qty:
$5.71
Stant Radiator Cap
  • Stant Radiator Cap
  • Pressure Rating 16 psi
  • OE Type Radiator Cap
  • Product Attributes:
    • Pressure Rating (psi): 16 Psi
  • 16 PSI radiator cap for a 3/4" deep "A" size filler neck. Made of durable metal, 4 ear design. For open or closed system.
Brand: Stant
Additional Fitment Information:
Vehicle Block Engine CID CC
1969 - Buick Special L 6 Cyl 4.1L 250 4097
Stant
1950 Buick Roadmaster Radiator Cap 8 Cyl 5.2L Stant - Safety Release Radiator Cap

P311-2F3E00D    10328  New

ST-7 , WF-15 , S9 , SP9 , SP-9 , BR15P , 31508 , RC-101 , 620205 , ESR-15 , 3S15 , 12R32S , BSC-15 , ESR15 , PA7 , 5300389 , DRS9 , PA-7 , ESR-9 , 7031460 , ESP9 , BSC9 , RS33 , WF15 , DRS-9 , RC101 , RP-9 , RSP28 , 3-EF-15 , BR-9P , 703-1460 , S-9 , 46013 , BSC15 , BR9P , RP9 , SPT9 , 53-00389 , BR-15P , RSP-9 , PL7 , 3EF15 , SPT-9 , DRS-15 , WD-7 , 82828 , ST7 , RSP-28 , SP15 , B2AZ8100A , 53-00215 , 3-S-15 , 3-EG-15 , SP-15 , DRS9L , DRS-9L , 33060 , 3EG15 , 46040 , WD7 , 5300215 , 7707 , RSP9 , DRS15 , RL9 , 861850 , RS-33 , PL-7 , ESR9 , BSC-9 , B2AZ 8100 A , ESP-9 , SR9 , SR-9 , RL-9

Qty:
$12.03
Stant Radiator Cap
  • Stant Radiator Cap
  • Pressure Rating 7 psi
  • Safety Release Radiator Cap
  • Product Attributes:
    • Pressure Rating (psi): 7 Psi
  • 7 PSI Lev-R-Vent radiator cap in "A" size. For open or closed system. Will bring back coolant from the overflow tank.
Brand: Stant
Additional Fitment Information:
Vehicle Block Engine CID CC
1950 - Buick Roadmaster L 8 Cyl 5.2L 320 5248
Stant
1950 Buick Roadmaster Radiator Cap 8 Cyl 5.2L Stant - OE Type Radiator Cap

P311-226B9C3    10228  New

E2NN 8100 AA , WA-7 , BR15 , 46006 , 77512 , 31526 , S-9 , ER26 , DR-15 , RS1 , 2034259 , 6665383 , 6666606 , ER-26 , 1330034 , WC7 , ER-9 , WR-9 , RA-7 , WC15 , RS30 , 77508 , RR9 , WC-9 , 53-10645 , WR-15 , 10228 , 80889R91 , ER-15 , ER9 , 21450097 , DR15 , 6515568 , R28 , 6646545 , RA-18 , RS-1 , 6511985 , ER23 , D3HZ 8100 A , 94037865 , RS-56 , RS54 , E6HZ8100D , 620201 , 7031696 , RA7 , RS68 , RS-30 , P-9 , M-15 , RC16 , RS-54 , BR-9 , 133-8037 , 46030 , ER15 , BC-9 , 3-M-15 , RA18 , BC-15 , RR-24 , 393229R91 , RS9 , 33029 , E6HT 8100 AA , 12R32 , 5310710 , P-15 , 94048391 , 3-EE-15 , RS-68 , 703-1696 , 850986 , RC35 , 133-9000 , RR24 , M-9 , E6HZ8100B , RC-9 , 5310736 , BC15 , BR9 , A-7 , E6HZ 8100 D , 6630156 , T7 , RC-1 , B2AZ 8100 F , RC1 , BC9 , 180224M91 , 82928 , 6410642 , 378289R92 , M9 , RC38 , 77-508 , E0HZ8100A , P9 , E2NN8100AA , RS56 , RR-9 , E0HZ 8100 A , E8TH 8100 BA , RC-16 , RR28 , 53-10710 , 133-0034 , A7 , 850549 , B2AZ8100F , 77-512 , DR-9 , 46026 , 3M9 , 1338037 , 6410878 , E6HT8100AA , RC9 , ER-23 , M15 , T-7 , WC-7 , S9 , RC-35 , 53-10736 , RC-38 , WC9 , 3EE15 , 648360 , 3-M-9 , BR-15 , E8TH8100BA , A21389 , RS-9 , RR-28 , WA7 , P15 , 3M15 , WR15 , 5310645 , 128 , 370871R91 , WC-15 , A59861 , DR9 , 7007 , WR9 , R-28 , D3HZ8100A , 1339000

Qty:
$5.01
Stant Radiator Cap
  • Stant Radiator Cap
  • Pressure Rating 7 psi
  • OE Type Radiator Cap
  • Product Attributes:
    • Pressure Rating (psi): 7 Psi
  • 7 PSI radiator cap for a 3/4" deep "A" size filler neck. Made of durable metal, 4 ear design. For open or closed system.
Brand: Stant
Additional Fitment Information:
Vehicle Block Engine CID CC
1950 - Buick Roadmaster L 8 Cyl 5.2L 320 5248
Stant
1985 Buick Somerset Regal Radiator Cap 6 Cyl 3.0L Stant - Safety Release Radiator Cap

P311-1A75F14    10331  New

L95-5078 , ESP18 , WD-17 , 620207 , RL43 , RL21 , BSC17 , 703-1702 , RC115 , 46016 , RSP19 , ESP-17 , 46015 , RP19 , RSP18 , RC-115 , RP17 , RSP-17 , L955078 , 1508-16 , 7816 , 82830 , SPT-17 , 10331 , 5300298 , RL17 , 46063 , 3-EG-17 , BR-17P , ESP-18 , RSP-30 , WF-17 , RSP30 , DRS-17L , 31516 , 82831 , 11331 , 53-00298 , DRS29 , 7B0121321A , 33063 , BSC-17 , PL17 , 3EG17 , PL-17 , WD17 , 7B0121321 , 3-S-17 , ESP17 , L95-5060 , RSP17 , 644128 , RSP-18 , SPT17 , ST16V , DRS17L , DRS-29 , 3EF17 , 3-EF-17 , RP-19 , 861854 , RL-42 , ESR-17 , RSP20 , 7031702 , 46064 , RSP-19 , DRS17 , RP-17 , 3S17 , WF17 , RSP-31 , RSP31 , RSP-20 , RL42 , DRS-17 , BR17P , L955060 , RL-17 , ESR17 , RL-43 , RL-21

Qty:
$11.07
Stant Radiator Cap
  • Stant Radiator Cap
  • Pressure Rating 16 psi
  • Safety Release Radiator Cap
  • Product Attributes:
    • Pressure Rating (psi): 16 Psi
  • 16 PSI Lev-R-Vent radiator cap in "A" size. For open or closed system. Will bring back coolant from the overflow tank. Vented design.
Brand: Stant
Additional Fitment Information:
Vehicle Block Engine CID CC
1985 - Buick Somerset Regal V 6 Cyl 3.0L 181 -
Stant
2007 Buick Rendezvous Radiator Cap 6 Cyl 3.5L Stant - OE Type Radiator Cap

P311-21E3E1F    10231  New

991516 , 3673891 , 17111152062 , 15064718 , 10036879 , 10409635 , E3SZ8100A , E6LY8100A , 8-06410-785-0 , CAC3674 , D7AZ 8100 A , 703-1699 , D5VY 8100 A , E8DZ8100A , 443865C2 , E8DZ 8100 A , E6DZ8100A , 2998982 , E6DZ 8100 A , RS-64 , 0005010215 , RC54 , D5VY8100A , 4039936 , 3781830 , 06410685 , RC 96 , E2FZ8100A , E1FZ 8100 A , RC 54 , 7616 , 31523 , D7AZ8100A , 6410785 , E6LH8100AA , 10049770 , EIFZ 8100 A , E1FZ8100A , 7B0121321 , 4266968 , 25730158 , 8064107850 , RC96 , A1235010115 , 1235010015 , 55111074AA , 15953298 , RC49 , 1497193 , T-10 , 8-15982-188-0 , 06410487 , 4140464 , 6410985 , A 1235010015 , E3SZ 8100 A , E6DZ 8100 B , 414 0464 , 3412851 , A170241 , E6LH 8100 AA , 6410456 , E6LY 8100 A , 4677493AA , 17 11 1 152 070 , E35Z 8100 A , RC27 , J5352954 , GRC156 , 55111074AB , 7B0121321A , 82931 , 4682828 , A 0005010215 , 55111 074AA , RC-27 , 5900584 , 8159821880 , RC36 , 52079880AA , A0005010215 , D6AZ8100A , 10231 , GRC110 , A 1235010115 , RS64 , A 0005010015 , D6AZ 8100 A , 14099684 , 55111 074AB , 8064104270 , GRC181 , 17111151700 , 09975778 , 7031699 , A1235010015 , A0005010015 , 33042 , RC 49 , RR31 , E2FZ 8100 A , 644131 , T16V , J590 0584 , 15982188 , 6410640 , 6410427 , 4401493 , E6DZ8100B , 426 6441 , 3574154 , 5017 468AA , 46043 , EIFZ8100A , J5358177 , 1235010115 , 17 11 1 151 700 , 468 2828 , 10283897 , 321121321B , T10 , RC-36 , 54819976254 , RR-31 , RC 97 , 5017468AA , 17111152070 , 4266441 , RC97 , 8-06410-427-0 , 426 6968 , 0005010015 , 6410570 , 06410782 , 5352954 , 8942287480 , J5900584 , E35Z8100A

Qty:
$5.65
Stant Radiator Cap
  • Stant Radiator Cap
  • Pressure Rating 16 psi
  • OE Type Radiator Cap
  • Product Attributes:
    • Pressure Rating (psi): 16 Psi
  • 16 PSI radiator cap for a 3/4" deep "A" size filler neck. Made of durable metal, 4 ear design. For open or closed system. Vented design.
Brand: Stant
Additional Fitment Information:
Vehicle Block Engine CID CC
2007 - Buick Rendezvous V 6 Cyl 3.5L 213 -
Stant
2011 Buick Lucerne Radiator Cap 8 Cyl 4.6L Stant - OE Type Radiator/Coolant Recovery Tank Cap

P311-54D210F    10269  New

92232910 , 92205634 , 31566 , 15293434 , T61 , 7031544 , 10305080 , T-61 , 33090 , 703-1544

Qty:
$9.15
Stant Radiator Cap
  • Stant Radiator Cap
  • Pressure Rating 18 psi
  • OE Type Radiator/Coolant Recovery Tank Cap
  • Product Attributes:
    • Pressure Rating (psi): 18.5 Psi
  • 18 PSI coolant cap for threaded filler neck. For use on closed system. Made of durable plastic.
Brand: Stant
Additional Fitment Information:
Vehicle Block Engine CID CC
2011 - Buick Lucerne V 8 Cyl 4.6L 281 -
Stant
1942 Buick Roadmaster Series 70 Radiator Cap 8 Cyl 5.2L Stant - OE Type Radiator Cap

P311-1EC0118    10206  New

850797 , 77505 , 703-1411 , RR6 , 33003 , WR6 , 77-505 , RS-6 , BR6 , M6 , WA6 , ER-6 , BC6 , B2AZ 8100 E , 31306 , T-6 , BC-6 , WC6 , RC6 , 7006 , RR-6 , U954128 , P-6 , RS6 , M-6 , 12R31 , WA-6 , P6 , 46004 , 7031411 , DR6 , WR-6 , B2AZ8100E , AT29054 , 5310629 , 1338011 , 53-10629 , WC-6 , 133-8011 , RC-3 , DR-6 , T6 , U95-4128 , 255300 , RC3 , ER6 , RC-6 , BR-6

Qty:
$7.76
Stant Radiator Cap
  • Stant Radiator Cap
  • Pressure Rating 7 psi
  • OE Type Radiator Cap
  • Product Attributes:
    • Pressure Rating (psi): 7 Psi
  • 7 PSI radiator cap for a 1" deep "A" size filler neck. Made of durable metal, 4 ear design. For open or closed system.
Brand: Stant
Additional Fitment Information:
Vehicle Block Engine CID CC
1942 - Buick Roadmaster Series 70 L 8 Cyl 5.2L 320 5248
Stant
2017 Buick Verano Radiator Cap 4 Cyl 2.4L Stant - OE Type Radiator Cap

P311-58D802D    10271  New

31569 , T62 , 68249136AA , T56 , 13502509 , 15075118 , 68096261AA , 33092 , 20838623 , 68249098AA , T-62 , 7031546 , 13502353 , 703-1546

Qty:
$9.29
Stant Radiator Cap
  • Stant Radiator Cap
  • Pressure Rating 20 psi
  • OE Type Radiator Cap
  • Product Attributes:
    • Pressure Rating (psi): 20 Psi
  • 20 PSI coolant cap for threaded filler neck. For use on closed systems. Made of durable plastic.
Brand: Stant
Additional Fitment Information:
Vehicle Block Engine CID CC
2017 - Buick Verano L 4 Cyl 2.4L 145 2384
ACDelco
1998 Buick Park Avenue Radiator Cap ACDelco

P311-317EAAC    W0133-1681872  New

Qty:
$22.05
ACDelco Radiator Cap
  • Professional
Brand: ACDelco
Additional Fitment Information:
Vehicle Aspiration
1998 - Buick Park Avenue Naturally Aspirated
ACDelco
1998 Buick Park Avenue Radiator Cap ACDelco

P311-317EAAC    W0133-1681872  New

Qty:
$22.05
ACDelco Radiator Cap
  • Professional
  • Excludes Dex-Cool Label
Brand: ACDelco
Additional Fitment Information:
Vehicle Aspiration
1998 - Buick Park Avenue Supercharged
ACDelco
2002 Buick Rendezvous Radiator Cap ACDelco

P311-317EAAC    W0133-1681872  New

Qty:
$22.05
ACDelco Radiator Cap
  • Professional
  • Except Dex-Cool Label
Brand: ACDelco
Additional Fitment Information:
Vehicle
2002 - Buick Rendezvous
ACDelco
1985 Buick Electra Radiator Cap 8 Cyl 5.0L ACDelco

P311-317EAAC    W0133-1681872  New

Qty:
$22.05
ACDelco Radiator Cap
  • Professional
  • with Turning Ears
Brand: ACDelco
Additional Fitment Information:
Vehicle Block Engine CID CC
1985 - Buick Electra V 8 Cyl 5.0L 307 -
ACDelco
2014 Buick Encore Radiator Cap ACDelco

P311-3E1E7C9    W0133-1983864  New

Qty:
$18.96
ACDelco Radiator Cap
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • GM Original Equipment
  • Location-Expansion Tank
Brand: ACDelco
Additional Fitment Information:
Vehicle
2014 - Buick Encore
ACDelco
2018 Buick Regal Sportback Radiator Cap ACDelco

P311-3E1E7C9    W0133-1983864  New

Qty:
$18.96
ACDelco Radiator Cap
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • GM Original Equipment
  • Location-Reservoir
Brand: ACDelco
Additional Fitment Information:
Vehicle
2018 - Buick Regal Sportback
ACDelco
2018 Buick Encore Radiator Cap ACDelco

P311-3E1E7C9    W0133-1983864  New

Qty:
$18.96
ACDelco Radiator Cap
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • GM Original Equipment
Brand: ACDelco
Additional Fitment Information:
Vehicle Engine Designation
2018 - Buick Encore LUV
ACDelco
2011 Buick Lucerne Radiator Cap 6 Cyl 3.9L ACDelco

P311-33D4733    W0133-1690827  New

Qty:
$21.34
ACDelco Radiator Cap
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • GM Original Equipment
Brand: ACDelco
Additional Fitment Information:
Vehicle Block Engine CID CC
2011 - Buick Lucerne V 6 Cyl 3.9L 237 3880
Gates
2011 Buick Lucerne Radiator Cap 6 Cyl 3.9L Gates

P311-229412C    W0133-1690827  New

Qty:
$28.02
  • OE Type
Brand: Gates
Additional Fitment Information:
Vehicle Block Engine CID CC
2011 - Buick Lucerne V 6 Cyl 3.9L 237 3880
ACDelco
2013 Buick Enclave Radiator Cap ACDelco

P311-29ED154    W0133-1685730  New

Qty:
$22.04
ACDelco Radiator Cap
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • GM Original Equipment
  • English / French Label
Brand: ACDelco
Additional Fitment Information:
Vehicle
2013 - Buick Enclave
ACDelco
2009 Buick LaCrosse Radiator Cap ACDelco

P311-0FDD515    W0133-1820763  New

Qty:
$25.05
ACDelco Radiator Cap
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • GM Original Equipment
Brand: ACDelco
Additional Fitment Information:
Vehicle
2009 - Buick LaCrosse

Latest Buick Repair and Radiator Cap Installation Advice

CarJunky AutoAdvice

2001 Buick Century Overheats

Showing 2 out of 4 Posts | Show 2 Hidden Posts
Question From Celestialsfire on 2001 Buick Century Overheats

2001 Buick Century
3.1 Engine
~95,000 miles
Low coolant light comes on and off at will. Losing coolant out of reserve tank. Losing a little bit of oil too. Now coolant is running out of the radiator a lot more than usual. A year ago had the coolant system flushed out. After I took a trip out of state and came back, the car acts likes it overheats, meaning the temperature gauge on the dash says its hot, but the light indicator saying its hot doesn't come on, nor does steam come out of the car and the car doesn't act up like it has done in the past when it has overheated. Usually when the engine was low on coolant it would jerk when shifting, because it was overheating. In town it used to overheat and on the highway it was fine. Now its just the opposite. It overheats at high speeds but is fine when I stop. Is it the fan belt or the radiator hoses or plainly just the radiator itself? I need to know what I should replace right now to make the most impact.

Thank you for your time.

Response From Loren Champlain Sr

Celestialsfire; Oh, I like that name. First, we need to find out where the coolant is going. You cannot depend on the light, or, even the guage. Both require sending units to be in contact with coolant to tell you the truth. Once the coolant level gets too low, they aren't dependable. A cooling system pressure test should answer this question.
Assuming the cooling system is full and all air bled from the system, overheating at speed is usually caused by either a thermostat not opening all of the way or the radiator may be plugged. A rarity, but the impeller on the water pump could be faulty.

Response From Celestialsfire

Thank you for your response.

Another thing I just remembered. When I was returning from my trip, the car started to overheat, so I pulled over the side of the road and looked in the coolant reserve tank. It was filled up with water. I did not put any water in it. I use the 50/50 premixed stuff. How could water mysteriously get into the reserve tank? Is the water pump going bad too?

Response From Loren Champlain Sr Top Rated Answer

Celestialsfire; As the coolant gets hot, it will expand, the pressure will overcome the radiator cap pressure rating and go into the reservoir. As the engine cools, it will reverse, and go back into the radiator. When you have the cooling system pressure tested, make certain that they check the radiator cap as well.

2001 buick century

Showing 2 out of 2 Posts
Question From rmdiana on 2001 buick century

I have a 2001 Buick century, V6, with 130000 miles. A while ago the engine started to run hotter, then fluid would spill out through the over flow. I pulled the radiator and had it flushed, where I was told there was quite a bit of sludge. Although the car continued to run hot. I replaced the hoses and radiator cap also. It seemed to help for a bit, but now back to running hot and over a few days the radiator fluid low. No white smoke with starting car and the last time I changed the oil there was no water in the oil. Could it be a cracked head?

Response From Hammer Time Top Rated Answer

Your first step would be to pressure test the cooling system to try to determine where your losing coolant to. This engine has a known problem with leaking intake manifold gaskets.

1992 buick regal using coolant in drive

Showing 2 out of 8 Posts | Show 6 Hidden Posts
Question From Guest on 1992 buick regal using coolant in drive

i have a 92 buick regal and when i drive it in drive it uses coolant i dont smell any burning or anything funnny thing is when i drive in overdrive it dosent use any coolan anyone have any guesses? By the way i already had the radiator replaced at the dealership prior to this

thanks
dushdude714

Response From Tom Greenleaf

???? It uses engine coolant in drive only but not overdrive (which doesn't kick in till up to speed) and you have a new radiator? Was this your complaint when the radiator was replaced?

Check fluid levels at both radiator at cap and trans fluid level looking for coolant in the fluid which can make it look like pink frappe. Need to know a bit more to suggest anything else,

T

Response From Guest

???? It uses engine coolant in drive only but not overdrive (which doesn't kick in till up to speed) and you have a new radiator? Was this your complaint when the radiator was replaced?

Check fluid levels at both radiator at cap and trans fluid level looking for coolant in the fluid which can make it look like pink frappe. Need to know a bit more to suggest anything else,

T

no my radiator busted thats why i had to get another one i did check oil levels and and the trans and they look normal no water or anything. Yeah i know its confusing i have drive and overdrive as seprate gears. When i use overdrive it dosent use fluid but when i use drive it uses fluid...any gusses

thanks
dishdude714

Response From Tom Greenleaf

You don't have different gears for overdrive. That merely enable the torque converter to lock at like over at least 35 mph.

If your coolants are full and not cross contaminated then what's the problem?

The only place coolant and trans fluid are close is in the radiator itself where the lines go in top and out bottom back to trans. If that had a problem it wouldn't care what gear you were in,

T

Response From Guest

well it burned all the radiator out all the car si theres nothing but water in the tank any reason why? Because i looked and found no leaks from the radiator or any bottom portion of the motor

Thanks
Dishdude714

Response From Tom Greenleaf Top Rated Answer

If there's just water in the cooling system someone must have filled it with just water. That's ok for testing but can't stay that way. Coolant must be full at radiator, cap must be good, and the recovery tank should never drop below it's "min" mark.

You said it burned out the tank -- did you mean the radiator or the recovery tank?

A bad head gasket could blow coolant out and overspill at recovery tank or could be burning it in engine and might be unnoticed if slow,

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Response From Guest

yes both the recovery tank and the radiator go empty when i drive. Plus when i use the ac same thing. I know i should put in radiator fluid but its getting expensie to put in every time i go to worn and when i get home. How can i tell if the head gasket is busted or not?

Response From Tom Greenleaf

I would pressure test the system with engine off and be careful as a cylinder may fill up with water and would really hurt the engine to try to start it without taking out the spark plugs first and cranking it.

If you have been driving this thing dry twice a day you can almost be sure the head gasket has a problem and if it wasn't the cause it wouldn't like driving around out of coolant. Water is fine for a while and using that alone doesn't hurt anything short term.

You really need to find that leak and fix it before you need a new engine!

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2001 Buick overheats

Showing 7 out of 8 Posts | Show 1 Hidden Posts
Question From randypolar on 2001 Buick overheats

2001 buick century 3.1 engine over heats. At first it only over heated on hot days, now it does very quickly in just a few miles sometimes. When it does I've noticed that I can remove radiator cap with no problem and its full of coolant. Then I'd open the two bleed screws and there is no coolant and full of very hot steam. Like no coolant is in the engine i now this because i shut engine off and using a funnel I was able to slowly add more water and it would flow into the engine and i could here the colder water enter the hot engine and turn too steam I could actually here this happen so i keep adding more until water instead of steam came out of the bleed screws and then I could drive again. And then it would do it again. Ive replaced water pump and thermostat. I suspect head gasket. If so what about these high dollar headgasket sealers on the market do they really work?

Response From Hammer Time Top Rated Answer

Sounds like you probably have a blow head gasket by now.
Didn't anyone ever tell you not to add water to a very hot engine?
Didn't anyone ever tell you not to use water at all.
50/50 mix of coolant should be the only thing ever added to the system.

Response From Hammer Time

Adding cold water to a hot engine is how you crack blocks and heads.

Response From Discretesignals

What gets me is that it is overheating and the OP keeps driving it.

If the car is a piece of junk and you don't plan on keeping it much longer, the sealer stuff may work if the headgasket is blown. Understand that if you use that stuff, which most mechanics don't condone, it will make a mess of the coolant system. Head gasket sealer is the Hail Mary of repairs.

Response From Hammer Time

Head gasket sealer is the Hail Mary of repairs.


You can pretty much forget repairing it after that. The radiator and heater core will be junk.

Response From Tom Greenleaf

But, but, but HT - Just back from WallyWorld and the good stuff was almost $20 to wreck things and fully guaranteed to work To think people waste all that time and money to fix things!

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Response From Hammer Time

And just imagine how much money the guy that sold that stuff made. he's the only one that wins.

Response From Tom Greenleaf

Quote ">>If so what about these high dollar headgasket sealers on the market do they really work?"

Yes - they will plug your heater core and make the problem much harder to fix. Not much magic in a can out there, just lies. Sells well though

Hey - I don't think I've ever seen a 'water cooled' engine that doesn't have warnings about openening up when hot. You are lucky you didn't get a face full of 3rd degree burns!

By your description you probably needed a head gasket job and now probably cracked parts up to rendering this engine junk,

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Radiator hoses

Showing 2 out of 2 Posts
Question From adlsmith66 on Radiator hoses

I replaced the thermostat in my 1998 Buick Park Avenue after the temp started fluctuating. Now when I turned the car on, my upper and lower radiator hoses compress. What could cause that?

Response From Tom Greenleaf Top Rated Answer

Guess: At first start up the radiator pressure cap isn't allowing for return fluid and in battle with water pump or thermostat is all wrong.

The initial fluctuating temps probably weren't the thermostat at all but more a radiator or air in system that radiator cap didn't allow to purge out. It's supposed to allow limited pressure and upon cool down return just coolant from bottom of recovery tank as coolant shrinks with lower temp,

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