Replace radiator cap with new radiator

Discussion in 'The Okie Corral' started by boatman1, Jan 28, 2020.

  1. boatman1

    boatman1

    Messages:
    344
    Likes Received:
    257
    Joined:
    Oct 7, 2005
    Just had to have a new radiator installed for my 98 Silverado with 93k on it. After I got it home I noticed they put the Old cap on the new radiator. Old cap had corrosion on the top but looks like they just cleaned it up and put it back on.

    Should I call them back and tell them I want a new cap or am I just being OCD? Should probably mention that I bought this truck new and it still looks that way.

    thanks
     
  2. ranger1968

    ranger1968

    Messages:
    10,146
    Likes Received:
    17,323
    Joined:
    Mar 23, 2009
    Location:
    Wayyyyyy down South, shootin' stuff and Jeeping!
    I would put a new cap on it, they do wear out, and are cheap enough to replace....
     

  3. Joshhtn

    Joshhtn The eBay Guy Gold Member

    Messages:
    18,607
    Likes Received:
    35,276
    Joined:
    Mar 31, 2009
    Location:
    Middle Tennessee
    I most definitely would. You paid for a new radiator and a new radiator includes a new cap.
     
  4. Nest

    Nest

    Messages:
    314
    Likes Received:
    25
    Joined:
    Nov 3, 2009
    Did they charge you for a new cap? If not I would replace it myself because it's cheaper. Then make a note that the shop doesn't do a job 100% and not go back
     
  5. FullClip

    FullClip Native Mainiac CLM

    Messages:
    13,472
    Likes Received:
    41,205
    Joined:
    May 24, 2004
    Location:
    On The Lake in The Maine Woods
    I wouldn't sweat it unless they charged you for a new one. If you're worried about it, pick one up at Pep Boys and do it yourself.
     
    ERASER, Intolerant, mc1911 and 3 others like this.
  6. orangejeep06

    orangejeep06

    Messages:
    4,560
    Likes Received:
    10,989
    Joined:
    Dec 17, 2007
    Location:
    in the past
    ^this
    i’ve had a cap fail due to age
     
    Intolerant, Paul53, Caver 60 and 4 others like this.
  7. Bradd D

    Bradd D

    Messages:
    3,073
    Likes Received:
    3,630
    Joined:
    Dec 6, 2000
    Location:
    St Cloud, FL USA
    The radiator and reservoir caps are a wear item on my truck and are supposed to be replaced every 30,000 miles.
     
    ranger1968, Caver 60 and orangejeep06 like this.
  8. ranger1968

    ranger1968

    Messages:
    10,146
    Likes Received:
    17,323
    Joined:
    Mar 23, 2009
    Location:
    Wayyyyyy down South, shootin' stuff and Jeeping!
    Actually, alot of replacement radiators don't come with a new cap, it's an additional part; if the customer doesn't specify that they want a new cap, some shops won't add it to the job.
     
    Last edited: Jan 28, 2020
  9. pittpa

    pittpa What did I come in here for?

    Messages:
    8,364
    Likes Received:
    17,051
    Joined:
    Jan 24, 2010
    Location:
    Fortress of Solitude on 11th floor - SW PA 'burbs
    They might have tested it and found it to be in spec.
     
  10. orangejeep06

    orangejeep06

    Messages:
    4,560
    Likes Received:
    10,989
    Joined:
    Dec 17, 2007
    Location:
    in the past
    Interesting,i didn’t know that. You’d think they’d be sold together.
     
    Intolerant and Joshhtn like this.
  11. Joshhtn

    Joshhtn The eBay Guy Gold Member

    Messages:
    18,607
    Likes Received:
    35,276
    Joined:
    Mar 31, 2009
    Location:
    Middle Tennessee
    Oh, well that changes things a bit. I just assumed it would be included.

    In that case, I'd go down to the local parts store and pick one up for a few bucks just to replace the old one.
     
  12. LinuxLover

    LinuxLover Ba-nan-nah-nuh

    Messages:
    2,829
    Likes Received:
    3,425
    Joined:
    Apr 18, 2018
    Location:
    59840
    A GOOD shop would test the cap.... yes, they can be tested.... and no matter the appearance... if it's good, it's good.

    You said its a '98 Chevy truck... right? If so, read on, please

    If you replace the cap... GM and I stipulate that you get the correctly designed cap. For most over the counter caps, the pressure may be right, but the design might be wrong.

    GM uses a "drop center valve" cap. If you hold it up, rubber side down, the little steel cap in the center must fall down a tiny bit. It must not be held snugly closed by a spring.

    IOW...... it's a floating check valve for the reservoir. ​

    ThIs GM design won't allow pressure to build in the system until the thermostat opens and coolant flow actually closes it. That might take a few more miles than a run to the local liquor store.

    The purpose is to keep the thermal pressure duty cycles to a minimum: GM thought the plastic-aluminum radiators would have a short life if the pressure came up pretty fast and every time the engine ran 1/2 a block
     
    -JCN-, Intolerant, NoStress and 3 others like this.
  13. LinuxLover

    LinuxLover Ba-nan-nah-nuh

    Messages:
    2,829
    Likes Received:
    3,425
    Joined:
    Apr 18, 2018
    Location:
    59840
    PS -----> lever style caps will not work correctly on GM vehicles.

    You'll THINK they are working properly... they ain't.
     
    Intolerant, Paul53 and Caver 60 like this.
  14. Bow Commander

    Bow Commander

    Messages:
    1,364
    Likes Received:
    568
    Joined:
    Mar 23, 2010
    Location:
    Orygun
    Maybe that's why they put the OEM cap back on?
     
    LinuxLover and Intolerant like this.
  15. Doc Holliday

    Doc Holliday CLM

    Messages:
    6,680
    Likes Received:
    3,081
    Joined:
    May 13, 2007
    Location:
    Arizona
    New cap, every single time...the old one might test good, but the more it's been used, the closer it is to failure...don't be cheap and take a chance, it's less than $10 to replace...and if it's got high mileage, you may want to consider getting one a few lbs less, to take the pressure off those aging gaskets and hoses, too...mine calls for a 16-lb cap, I put a new 13-lb on the radiator I just installed along with new thermostat and housing, and upper and lower hoses. Summers coming soon, don't need any overheat problems in 115° weather...
     
  16. snappy

    snappy

    Messages:
    2,365
    Likes Received:
    4,059
    Joined:
    Jan 10, 2008
    Location:
    North Cakalaky
    Whether they tested the old cap or not is irrelevant. New radiator gets a new cap regardless. The shop should be ashamed in my opinion, that’s just cheapskate crap.
     
    Intolerant, Doc Holliday and Caver 60 like this.
  17. Bradd D

    Bradd D

    Messages:
    3,073
    Likes Received:
    3,630
    Joined:
    Dec 6, 2000
    Location:
    St Cloud, FL USA
    Should they also provide new hoses, reservoir with cap, water pump, and thermostat?
     
    larry_minn likes this.
  18. ranger1968

    ranger1968

    Messages:
    10,146
    Likes Received:
    17,323
    Joined:
    Mar 23, 2009
    Location:
    Wayyyyyy down South, shootin' stuff and Jeeping!
    This.
     
    Intolerant and Doc Holliday like this.
  19. 200amp

    200amp

    Messages:
    10
    Likes Received:
    0
    Joined:
    Nov 5, 2008
    Old 1 metal ? New 1 plastic which one do you want ?
     
  20. Doc Holliday

    Doc Holliday CLM

    Messages:
    6,680
    Likes Received:
    3,081
    Joined:
    May 13, 2007
    Location:
    Arizona
    If the customer agrees and wants to pay for it, yes, a good shop should always suggest doing the 'complete job'...at least mention it and explain the benefits...and let the customer decide.
     
    Intolerant and larry_minn like this.