1999 GMC Jimmy POPPING AIRCONDITION

1999 GMC JIMMY
170,000 MILES
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RBLUNT
  • MEMBER
  • 2 POSTS
i have a1999 GMC Jimmy, starting at 45mph and above when I have the air condition on, my car makes a popping noise, sort of like pop corn popping, it only happens when the tempature is hot outside when i have the air on., like 90 degrees or above, low tempatures it does not pop only when the tempature is high outside and at 40mph or higher. your video it very good, i think one of these components is failing. Any suggestion would help. The noise? never happens when the Air is off.
Jul 21, 2013 at 7:44 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Can you tell aprox where the noise is coming from?
Jul 21, 2013 at 1:31 PM
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RBLUNT
  • MEMBER
  • 2 POSTS
no i can not tell where noise is coming from.
i think maybe under the hood. i have had major from end done, still the noise is there.
i think it is air condition related. after some research. Either when the hot air is coming in or going out of the air condition system. Because it only happens over 40 miles per hour. And when the temperature is over 80 or 90 degrees. cool mornings it never happens.
Jul 21, 2013 at 10:22 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
We need to locate where the noise is coming from. Check the AC compressor clutch when it is happening. See if the clutch is locking and unlocking quickly.
Aug 8, 2013 at 11:45 AM
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