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1999 Pontiac Grand Am Radiator noises

Tiny
BRIPIP1234
  • MEMBER
  • 1999 PONTIAC GRAND AM
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 189,543 MILES
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.
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Monday, September 28th, 2009 AT 6:54 PM

1 Reply

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 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.
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Tuesday, March 2nd, 2021 AT 9:10 AM

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