1999 Oldsmobile Alero Logo
mike kadamus jr Posted on Feb 03, 2013
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It keeps overheating and the coolant is full

My 99 alero keeps overheating , and the colant is full .when i shut off my car it sounds like gurgling

  • Andrew Toney Oct 08, 2019

    Also check the temperature sensor and the thermostat.

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3 Answers

CJ Rock

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  • Oldsmobile Master 4,429 Answers
  • Posted on Oct 08, 2019
CJ Rock
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Theres air, a lot of air in the system.

You need to have a pressure check of the system done
Could be bad radiator cap, hose (multiple)... any leak will allow air into system during cool down.

If the surge tank level doesnt go down after a hot to cold cycle, then theres an air leak.

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  • Posted on Oct 08, 2019
Stephen Barton
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Could be a bad coolant pump, could be a clog in the system, could be a bad cooling fan. You're building up a lot of heat and pressure while the engine is running. When the engine shuts off that pressure tries to equalize which causes the gurgling. Most mechanics will have the tools to flush and to pressure test your cooling system.

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  • Contributor 16 Answers
  • Posted on Feb 03, 2013
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Sounds like the radiator is clogged. Take it to radiator shop and have it flushed

5 Related Answers

Anonymous

  • 426 Answers
  • Posted on Oct 18, 2008

SOURCE: Overheating

Sounds like youve blown a head gasket,or a problem with head

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zandercoder

  • 1 Answer
  • Posted on Dec 03, 2008

SOURCE: 99 OLDS ALERO 2.4 IDLING PROBLEM

intake manifold has a vacum leak or other vacum leak hose etc.

Anonymous

  • 1392 Answers
  • Posted on Mar 07, 2009

SOURCE: 99 alero turns over fine fires and runs for 5

Is your security light flashing when it does this? If so, it is going into anti theft mode. Do you have the correct key for the car? Not an aftermarket one either.

Anonymous

  • 305 Answers
  • Posted on Jul 27, 2009

SOURCE: my 1999 alero is overheating and engine coolant is leaking

hi, i dont know about the dipstick, but your overheating problem is most likely to be the thermostat...sounds like its stuck in the closed position,not allowing colder water to circulate, hence the overheating.......needs changing

Molson02536

Harvey N Tawatao

  • 3854 Answers
  • Posted on Mar 20, 2010

SOURCE: 1999 Alero overheating

Could be both your water pump and thermostat are faulty. Start with the simple and replace the thermostat and also did the engine over heat while you were stopped or in stop and go traffic, if you were then you may have a blown fuse or bad cooling fan relay that needs to be addressed. Check to make sure your Cooling fan is working, you can test this buy turning on your A/C on full and the fan should come one the same time your A/C clutch activates. If the fan does not function, inspect the electrical system to the cooling fans and replace the thermostat to ensure there will not be any issues in the summer time. Thermostat are know to go bad when they are over heated.
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Hi!
It appears we have an Air lock scenario and you will need to perform a system Bleed.
Park the vehicle on level ground, when cold remove coolant filler cap, start engine and leave to idle, turn heater on full and blower to max. When engine reaches operating temperature watch and listen near coolant filler, keep clear as gurgling and hopefully a boil over should occur. Top up with very warm coolant and wait as it may do it again.
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or gasket area, or possibly water pump?
Please press the Blue button to appraise my FREE Efforts, Thank You!
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