1999 Pontiac Grand Am Radiator noises

1999 PONTIAC GRAND AM
189,543 MILES • 4 CYL • FWD • AUTOMATIC
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BRIPIP1234
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  • 1 POST
My car has a radiator cap problem and I am addressing that. However, when the car reaches 210 degrees (approx.) the radiator startes to make this pop pop pop sound. It only comes from the driver side and I don't understand why it would make that sound.
Sep 28, 2009 at 11:54 AM
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MMPRINCE4000
  • ✓Experienced Mechanic
  • 8,548 POSTS
Popping noises are usually coolant boiling. Make sure you have a 50/50 mix of water and coolant.

There could also be a colapsed hose, or an air bubble in system.

Drain coolant and refill with 50/50 mix.

If problem persists, you may need a new waterpump.
Mar 2, 2021 at 1:10 AM
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