2003 buick century overheating issues

Asked by Nate Apr 25, 2019 at 02:47 PM about the 2003 Buick Century Custom Sedan FWD

Question type: Maintenance & Repair

I have a 2003 Buick Century and i have replaced
the temp sensor and the thermostat and i am still
having overheating issues. When i opened the
radiator cap there is gray sludge on it. I wanted to
replace the radiator and the water pump along with
the gaskets and hoses (of course). I dont want to
spend unnecessary money if it wont fix the
problem. Does anyone have any suggestions?

1 Answer
70

Rusty answered 5 years ago

This could be leaky lower intake manifold gaskets leaking oil into the cooling system. It happens a lot on GM 3.1 engines like this. Get the L.I.M. gaskets replaced and check for head gasket leaks too so they can both be done at once, otherwise, you will still have problems and wasted money only to do it over.

2 people found this helpful.
Mark helpful

Your Answer:

Related Questions

  • 2003 buick century overheating issues 1 Answer

    I have a 2003 Buick Century and i have replaced the temp sensor and the thermostat and i am still having overheating issues. When i opened the radiator cap there is gray sludge on it. I wanted to ...

    2003 Buick Century Custom Sedan FWD

    -

    Maintenance & Repair

  • 2003 Buick Overheating After Repair 4 Answers

    My 2003 Buick Century is still Overheating - After check hoses, flush radiator, replace thermostat 2x, replace intake gaskets, head gaskets, water pump and bleed air from system. Help!

    2003 Buick Century Custom Sedan FWD

    -

    Maintenance & Repair

  • 2001 Buick Century overheating 2 Answers

    My car keeps overheating and shutting off. Sometimes it will crank back up and sometimes i have to wait 20-30 minutes. I have checked the cooling system and it still has water when this happens. T...

    2001 Buick Century Custom Sedan FWD

    -

    Maintenance & Repair

  • 2003 century Buick overheats 1 Answer

    I have changed the radiator, coolant is full and does not leak. Kicker, if I run my heat it doesn't overheat the slightest. And if it's overheating all I have to do is run the heat full blast and ...

    2003 Buick Century Sedan FWD

    -

    Maintenance & Repair

  • 2002 Buick century overheating 4 Answers

    Cars been overheating changed thermostat did not work then put new radiator in still overheating what other possibilities could it be

    2002 Buick Century Custom Sedan FWD

    -

    Maintenance & Repair

Shortcuts

Search Buick Century Questions

CarGurus Experts

  • #1
    Bruce Sampson
    Reputation
    2,470
  • #2
    John Saffrahn
    Reputation
    1,820
  • #3
    Rowefast
    Reputation
    1,490
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Buick LeSabre
1 listing
Used Buick Regal
3 Great Deals out of 39 listings starting at $4,991

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. Content will be removed if CarGurus becomes aware that it violates our policies.