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AC not working on low speed

Tiny
RAM PRATAP
  • MEMBER
  • 2016 HYUNDAI I10
  • 1.2L
  • 2WD
  • MANUAL
  • 67,000 MILES
AC is working fine when rpm reach 2000 or above but when it is on idle speed AC cooling is negligible. Refilled with Freon top-up fan is working checked whole electrical system. No other faults found. Mechanics are saying that it need compressor replacement. Please suggest the other way.
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Saturday, May 27th, 2017 AT 11:40 PM

3 Replies

Tiny
STEVE W.
  • MECHANIC
  • 13,444 POSTS
Get the AC pressures checked at idle and higher rpm. It could be low or overcharged, or a weak compressor.
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Sunday, May 28th, 2017 AT 7:14 AM
Tiny
RAM PRATAP
  • MEMBER
  • 2 POSTS
Thanks Steve. Got to know compressor is weak. Can someone guide how compressor be troubleshoot.
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Sunday, May 28th, 2017 AT 8:01 AM
Tiny
STEVE W.
  • MECHANIC
  • 13,444 POSTS
Put a gauge set on it, then watch the pressures as engine rpm rises. A weak compressor will show as low pressure until it revs up.
Not hard to change on most vehicles.
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Sunday, May 28th, 2017 AT 6:57 PM

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