WHAT AUSES THE A/C MAKE A LOUD HUMMING SOUND ONLY ON HIGH SPEED
2002 Pontiac Firebird • 77,000 miles
A/c set at coldest has 4 speeds no noise but just on 4th speed
If the loud humming noise is coming from the blower fan motor then sounds like you have a bad bearing in the motor etc.
It only does it on high not on low or med
Have you dropped the motor and checked the squriel cage for leaves debris etc?
No where is it under dash
There you go.
I took off the glove box to get to the motor but i dont know what it is but its in front of the heater core when i masshed it the humming sound quits any idea what it is i posted pic what it looks like
Thats a bad pic can you take a actual pic of it and post it or email it to me?
July 13, 2012.
July 13, 2012.
Ok ill post if not where do iu e-mail u?
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