Every time i put a load on the engine of my 1981 oldsmobile cultless supreme the heater starts to blow out cold air. I've flushed the heater core and hoses in and out of heater core are hot.

Asked by Dec 13, 2014 at 05:08 PM about the 1981 Oldsmobile Cutlass Supreme

Question type: Maintenance & Repair

2 Answers

35,375

Might be a water pump problem. You could also check you have a good radiator cap on and that air hasn't gotten into the system.

4,875

Even failed water pumps still pump, and the engine will still heat up even with no rad cap at all, so I would rule out those. It's more likely to be a cooling system that is not full or air in the system like KenF said that is preventing proper coolant circulation under certain driving conditions. From cold, or at least not super hot, take the cap off and make sure the system is full. Then run the engine with the cap off and see what happens as it warms up. Air trapped in the system will hopefully make it into the rad and escape through the open radiator. You will see the fluid level drop as this happens. Keep slowly filling it up until it stays at a steady level. Once you're there put the cap on and you should be good.

Your Answer

Oldsmobile Cutlass Supreme Experts

  • #1
    munron
    Reputation
    720
  • #2
    tennisshoes
    Reputation
    430
  • #3
    Tom Demyan
    Reputation
    350
View All

Related Models For Sale

Used Chevrolet Monte Carlo
932 listings starting at $3,998
Used Buick Regal
83 Great Deals out of 4,098 listings starting at $5,300
Used Chevrolet Camaro
238 Great Deals out of 28,792 listings starting at $1,800
Used Oldsmobile 442
62 listings
Used Ford Mustang
253 Great Deals out of 36,688 listings starting at $2,500
Used Chevrolet Impala
389 Great Deals out of 25,637 listings starting at $900
Used Chevrolet Caprice
132 listings starting at $1,350
Used Dodge Challenger
97 Great Deals out of 25,061 listings starting at $7,995
Used Dodge Charger
254 Great Deals out of 32,905 listings starting at $2,000
Used Chevrolet Corvette
99 Great Deals out of 15,306 listings starting at $3,900

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.